For additional tracking capability, we added two of our handy studio grade microphone preamps for direct analog connection to your digital audio interfaces A/D converters. These mic pres are the same design as those on our large format recording consoles, and offer plenty of gain, insert patching, and phantom power for condenser mics. You can use them for recording any sound source with low noise, low distortion, and wide frequency response. To top it off, we added a third mic preamp for a remote producer talkback mic or slating capabilities. You can do so much with HUI. Its a mix control surface that sets new levels of interactivity within todays and tomorrows DAW environments it will grow with your system, DAW software upgrades, etc. HUI can greatly improve your creativity while diminishing your workload and the repetitive grind of multiple sessions.
HUI Does What Your DAW Does
Though HUI can do many things, there are some things it cannot do. If your DAW software cant do a particular magic audio trick youve always wished for, neither can HUI*. Because HUI works along with your DAW thanks to the software and MIDI instructions that go back and forth between HUI and your computer it is at your softwares mercy. This is a good thing, though. If your DAW software is updated with new features or what have you, HUI can keep up with the technology. So, though your software may change, HUI will stay the same. Itll let you control your DAW with the handson ease and intuition you expect. It lets you be as creative as you want to be. One caveat: Some DAW software packages accept third party plug-ins. Its up to the plug-in designer to insure that their plug-in works correctly with external controllers like HUI.

An Installation Note

HUI has conductive knobs on the faders that can sense when you touch them and toggle the Write mode for those channels automatically. Furthermore, as soon as you let go of the knob, the channel goes back into playback mode, playing back whatever automation had been previously recorded. The touch circuits operate by sensing the stray capacitance your body provides between the fader knobs and ground. There are a number of variables that can affect the operation of this circuit, including temperature, humidity, and the number of fader knobs touched. Reliable operation of the touch circuits depends on providing a good earth ground for the HUI. Be sure the power cord is plugged into a 3-prong outlet with the third pin (safety pin) connected to earth ground. If youre not sure whether the third pin is grounded, use an AC outlet circuit tester to verify that the outlet is properly configured (available from Radio Shack and many fine hardware stores). DO NOT BYPASS THE SAFETY PIN ON THE PLUG.

HUI Rear Panel

R L/Mono R L/Mono R Mic

Talkback

MIDI Out

MIDI In

Keyboard Thru Keyboard In

Mouse Thru Mouse In

Expansion Serial Port

L/Mono

MONITOR INPUTS MONITOR OUTPUTS 3

MIDI Interface

Computer Connection
Powered Monitors such as Mackie HR824s
HUI FEATURES AND CONTROLS
Front Panel (Control Surface) Channel Strip NOTE: The functions of some of these switches depend on your particular DAW software. Therefore, you may wish to consult your DAW manual for further details. 1 Rec/Rdy (Record/Ready) switch. This
switch arms or disables the channel for recording. 2 Insert switch. This switch calls up inserts for editing, and also allows you to bypass all inserts on the channel when the master BYPASS switch is pressed (see bo at right). Makes it easy to access DSP (digital signal processing) software additions. (In Pro Tools these are called Plug-Ins.) 3 V-Sel switch. This switch toggles between the various functions of the V-Pot, such as I/O routing assignment, Send Mute switching (when the master MUTE switch is engaged), and Select when applying the default function. PAN/SEND 4 Pan/Send V-Pot. This soft potentiometer is used to adjust the send level and pan, to choose items from scrollable I/O assignment lists, and to determine destinations for sends. AUTO 5 Auto switch. For enabling automation on the channel. SOLO 6 Solo switch. For isolating a channels signal. MUTE 7 Mute switch. For defeating the tracks signal. 8 Scribble strip. A fourcharacter LED dot-matrix display SELECT for the channels name, group membership status, input and output source for the channel, send and insert status, and pre/ post status display for sends. Names are entered in the DAW software. 9 Select switch. This switch is used to choose a channel for channel-based editing or assignment commands, such as groups, assignment, etc. bl Touch-sensitive motor faders. These 100mm faders are for controlling the channels levels, aux returns, MIDI track, and master fader levels. The eight faders move relative to the activity of the currently chosen bank of on-screen faders.

REC/RDY INSERT V-SEL

bm Dual LED ladders. (Not shown here.) Display mono or stereo audio levels, according to the DAW specifications. The Clip LED comes on at 0dBFS. For Pro Tools users: When a channel is designated as mono, only the left meter ladder lights up. Likewise, if the channel is being used as a stereo channel, both ladders operate. (These meters are located in the meter bridge directly above each channel strip.)

Left Control Strip

bn Rec/Rdy All switch. This switch is used to enable (or defeat) all tracks for recording. bo Bypass switch. This switch allows you to bypass any channel inserts (hardware or DSP Plug-Ins) on any HUI channel(s) you have selected. bp Select/Assign switches and scribble strip. These switches are used to globally determine what a tracks V-Pot will control. Included in this section are: SENDS AE, PAN, MUTE, and SELECT- ASSIGN SHIFT. The scribble strip shows what the V-POT is doing, as well as send destination and I/O routASSIGN SUSPEND ing of an individual channel strip. INPUT DEFAULT bq Suspend/Default switches. SUSPEND OUTPUT ASSIGN temporarily suspends all automation functions (globally). DEFAULT is BANK used to set selected channel(s) back to the CHANNEL original, default settings. Use the DEFAULT/SEWINDOW LECT 9 switches to reset faders, and the ALT TRANSPORT DEFAULT/V-SEL 3 switches to reset sends EDIT STATUS and pans. br Input/Output/AsMIX MEM-LOC sign switches. These switches are used for sigKEYBOARD SHORTCUTS nal routing assignment(s). SAVE UNDO By selecting combinations of these switches and the SELECT and EDIT MODE EDIT TOOL V-SEL switches, channel I/O and send (bus) I/O SHIFT/ADD OPTION/ALL assignments are made.

6 Time Code Display and mode LEDs. Shows current time location in either time code, feet, or beats. LEDs indicate which mode is being displayed. If no LED is lit, the display is in standard minutes/seconds mode. Note: Once communication is established between HUI and the DAW software, the decimal point in the lower right corner of the Time Code Display blinks (once per second). If incoming MIDI communication is disrupted for any reason, the Time Code Display will read Off Line. 7 Rude Solo Light. A gentle reminder that a channel (or channels) in your mix session is soloed, whether its part of the current bank of eight channels or not. 8 Locate/Numerics keypad. Equivalent to its computer keyboard counterpart.

Control Room Section

The features found in this parcel of real estate (pictured on the next page) were included to let you use HUI without having to dedicate a mixer to monitoring functions. You can control input and output sources, as well as master volume, from this section. With the talkback features you can slate takes or talk to the voice talent, either with the in-panel talkback mic or with an external mic plugged into HUIs backside. Were sure youll find these features quite useful in your daily DAW work. (See page 18 for more info.)

MONITOR

CREATE
1 Input source select switches. These switches allow you to monitor whichever stereo input sources you have selected. Labeled INPUT 1, INPUT 2, and INPUT 3, they correspond to the MONITOR INPUTS 1, 2, and 3 jacks on HUIs rear panel. 2 1:1 Discrete switch. This switch determines whether HUIs inputs act as three stereo pairs assignable to any stereo output, or as six discrete mono inputs assigned to their corresponding outputs only (used for surround-sound mixing). 3 Mono switch. When this switch is engaged, HUI sums all signals through the MASTER VOLUME control into one mono signal. 4 Master Volume control. This level control determines the overall level of the currently selected monitor source(s). 5 Output level controls. Each one of these controls adjusts the output level of its respective audio output pair. 6 Output select switches. These switches determine which monitor outputs are being used. Labeled OUTPUT 1, OUTPUT 2, and OUTPUT 3/PHONES, they correspond to the MONITOR OUTPUTS 1, 2, 3 and PHONES jacks on HUIs rear panel. 7 Mute and Dim switches. Out of the box, the MUTE switch mutes all three MONITOR OUTPUTS (including PHONES), while DIM lowers HUIs monitor output level by a set amount (default is 20dB). To assign mute and dim control to specific outputs, press and hold the OPTION/ALL and MUTE or OPTION/ALL and DIM switches. The LEDs in the OUTPUT assign switches begin blinking to indicate which OUTPUTS are assigned to that particular function. Press an OUTPUT switch to toggle the MUTE or DIM assignment on and off. INPUT 1 When its set the way you want, press and hold the OPTION/ALL and MUTE or INPUT 2 OPTION/ALL and DIM switches again to quit. To change the amount of INPUT 3 dim level (i.e., more or less than the default 20dB), press and hold the OPTION/ALL and DIM switches to enter the Dim Assignment Mode (make sure the DIM switch is turned on first if you want to monitor the dim level as LEVEL

Rear Panel Controller Input/Output Section
1 Power cord receptacle and Power switch. The power cord receptacle is a standard IEC connection for HUIs power cord. Before plugging the power cord into an AC outlet, be sure it is firmly seated in the receptacle. Note: For safety reasons, the AC outlet must be a 3-prong outlet with hot, neutral, and ground terminals. Do not bypass the plugs ground pin! In addition to the safety issue, this insures that the HUIs chassis is properly grounded which is required for reliable operation of the faders touch circuits. 2 MIDI In/Out Connectors. These are standard MIDI 5-pin DIN ports for connecting HUI to your MIDI interface. (Note: HUI must be connected to a dedicated MIDI input and output pair; these connectors cannot be merged or daisy-chained.) 3 Keyboard/Mouse ADB ports. Convenient in/out throughput jacks for direct parallel connection of your ADB (Apple Desktop Bus) computer keyboard and mouse. These are used for extending the reach of your keyboard and mouse between your computer and HUI, not for actual control. See page 19 for more information. 4 Serial port, RS-232/422 switch. The serial port is a standard 9-pin D-Sub connector for connecting HUI to the external DAW. The switch selects between RS-232 and RS-422 operation (the data stream is equivalent to MIDI). See page 19 and page 31 for pin out and other specifications.
5 Expansion Port. 9-pin D-Sub connector for future connection of external control devices. 6 Footswitch Input jacks. Allows you to use an external footswitch to toggle DAW functions such as loop, play, and record modes. 7 Relay Output jacks. Used to toggle external circuits for solo indication, on-air lights, recording lights, etc. See page 31 in the Specifications section for a block diagram of these jacks.
Analog Audio Input/Output Section
8 Monitor Inputs (x3). These six linelevel inputs (balanced or unbalanced) feed the control room section. They can be used either as three stereo pairs or as six discrete inputs. 9 Monitor Outputs (x3). These six linelevel outputs (balanced or unbalanced) from the control room section can be used either as three stereo pairs or as six discrete outputs. bl Headphones jack. This is where you plug in your stereo headphones. Its signal is shared with (as well as isolated from) MONITOR OUTPUT 3, so the phones may be plugged in simultaneously.
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

WARNING:

Talkback and Mic Preamp Section
Another great thing about HUI TRIM TRIM TRIM if we dont mind saying so our60 dB dB 60 dB selves is its talkback and mic +48V +48V +48V preamps. They allow you to add PHANTOM PHANTOM PHANTOM a vocal track, insert slating inMIC MIC MIC structions, and perform other INPUT INPUT INPUT handy tasks, without having to resort to an outboard mixer. 1 Mic preamp Trim control. Used to set initial gain stage for mic signal levels (Mic 1, Mic 2, and Talkback). Trim level from INTERNAL INSERT INSERT MIC mic level (60dB down) to Unity IN IN EXTERNAL (0dBu). Maximum input is +22dBu. OUT OUT 2 Phantom Power switch. REMOTE OUT OUT Push this switch to provide 48V TALKBK BAL / BAL / TRIGGER UNBAL UNBAL of low-current DC to power condenser mics. 3 Talkback XLR mic input. SEND to processor Used to connect an external talkring tip (TRS plug) tip sleeve back mic. Note that there is no dedicated output for this preamp, although talkback logic routing This plug connects to one of the will send the signal to any or all of ring mixers Channel Insert jacks. RETURN from processor the MONITOR OUTPUTS (front panel assignable see instructions Insert Jack Y Cable for the Talkback Enable switch bl on page 13). 4 Mic Internal/External switch. Switches TS PLUG talkback signal source between the front in-panel Channel Insert jack mic or an external talkback mic plugged in here. Direct out with no signal interruption to output. 5 Remote Talkback Trigger jack. The Insert only to first click. talkback circuit is bidirectional it can either trigger something or be triggered by something. To remotely trigger HUIs talkback function, conTS PLUG nect a normally-open on/off footswitch to this jack. Channel Insert jack This is for the producer who loves to sit comDirect out with signal interruption to output. fortably back and communicate with the talent Insert all the way in to the second click. during crucial moments in a recording session. Conversely, if the engineer wants to enable another consoles talkback function via the HUI TRS PLUG front panel talkback switch, connect a TS cable Channel Insert jack between this jack and an unbalanced destination jack. When the front panel talkback switch For use as an effects loop. (TIP = SEND to effect, RING = RETURN from effect.) is pressed (enabled), the line is pulled low. See page 31 for a diagram of this circuit. Insert Jack Options 6 XLR mic inputs. These are two of Mackies high-headroom, low-noise mic or only to the first click, which does not interpreamps. Intended for mic-level inputs only, rupt the audio (see Insert Jack Options figure). The latter method allows you to use the they offer plenty of gain and sonic clarity. insert as a direct out in combination with the 7 Inserts. 1/4 TRS insert jacks for using mic output described next. in-line external effects and signal processing 8 Outputs. 1/4 TRS jacks for routing your with TRS to TS send and TS return Y cables. These connectors can also be used as direct microphones to external sources, such as the outputs using a 1/4 TS plug pushed in all the DAW audio interface for recording. These lineway (interrupting the audio signal completely), level outputs will provide either balanced and unbalanced signals.

AUDIO INPUT AND OUTPUT

Signal Flow Primer
Monitoring the audio signals can be done in either mono, stereo, or surround-sound (with six discrete channels). The overall input volume is controlled by the MASTER VOLUME knob. The outputs are controlled by three separate output level controls and toggle switches (labeled OUTPUT 1, 2, and 3). HUI uses DCAs (digitally controlled amplifiers) to control internal signal flow completely independent of the DAW. The signal is distributed according to which inputs and outputs are enabled.
1:1 Discrete Monitor Mode enabled inputs are not summed
When HUIs 1:1 DISCRETE switch is engaged (the LED will light), the control room section becomes a discrete surround matrix capable of either standard 4.1 surround (L/R/Center/Surround/subwoofer), or 5.1 surround (L/R/Center/ Surround L/Surround R/subwoofer). You can set up your DAW audio output configuration so that the various stem outputs correspond to the physical outputs on the DAW audio interface. These outputs are then patched to HUIs MONITOR INPUTS 1, 2, and 3. With 1:1 DISCRETE engaged, the output LEVEL controls for OUTPUTS 1, 2, and 3 act as trims for the respective mix stems (L/R/Center/ Surround L/Surround R/subwoofer). The MASTER VOLUME controls the level for all three output pairs, allowing you to trim the overall level of separate surround amp feeds. Keep in mind that, when in discrete mode, output pairs share a common stereo level control and individual outputs cannot be adjusted independently. Note: The DIM and MUTE controls operate on all outputs, regardless of whether HUI is in discrete mode. MONO, too, sums all inputs together, regardless of mode. Refer to the audio block diagram on page 30 for further info.
Stereo Monitor Mode enabled inputs stereo signals are summed into one stereo signal
In stereo monitor mode with the 1:1 DISCRETE switch turned off any of the three stereo input sources may feed any of the stereo MONITOR OUTPUTS (OUTPUT 1, 2, and 3). Any or all of the three stereo inputs can be monitored simultaneously. That is, its up to you to disengage an input if you dont want to monitor it. Any and all of the OUTPUTS can be active at once, so you can send outputs to various pairs of speakers and various combinations of speaker pairs and recorders.

(switched OFF)

Stereo Input 1 on Stereo Input 2 on (Stereo Input 3 off)

RS-232/RS-422 Serial Port
To use HUI in conjunction with a computer, run a cable with a 9-pin D-Sub connector from HUIs SERIAL PORT to the computers COM port. The serial port on HUI bidirectionally transfers data between a computers RS-232 or RS-422 serial port and HUI. The only difference between using the SERIAL and MIDI ports is the rate of transmission of the data (the serial port operates at 38.4K Baud and MIDI operates at 31.25K Baud) and the general physical hardware (9-pin D-Sub vs. 5-pin DIN, respectively). The actual data transferred is the same. For RS-232: Pin 2=TXD Pin 3=RXD Pin 5=Ground For RS-422: Pin 2=TX Pin 3=RX+ Pin 4=Ground Pin 7 =TX+ Pin 8=RX Use the following serial communications parameters when using the SERIAL port: Baud rate: 38.4K Parity: None Data bits: 8 Stop bits: 1

Expansion Port

This port is nestled on HUIs backside for use with future products.
MIDI OUT MIDI IN Keyboard In Keyboard Thru Mouse In Mouse Thru Expansion Serial Port

Keyboard

2nd Keyboard/Mouse (optional)
Footswitch Play ON/OFF For Future Products

Footswitch Record ON/OFF

Footswitch In 2 Relay Out
Note: The Footswitch In and Relay Out operations are defined by the DAW software (see DAW MIDI Controller's Guide). This figure shows one example of how they might be used.
(example: triggered by RECORD switch)

RECORDING IN PROGRESS

(example: triggered by PLAY switch)

ON THE AIR

To Computer Keyboard Port
To 2nd Computer Keyboard Port
To Computer Serial Port (Optional)
MIDI Interface Computer Serial Connection Computer 2nd Computer (optional)

Typical System Hookup

DIGITAL INPUT AND OUTPUT

APPLICATION HOOKUPS

Some Application Basics
One of the first things to consider when configuring your studio with HUI is what type of application suits you best. If you produce commercials for TV or radio, the TV/Radio Production Hookup may be your best bet. If you record and mix soundtracks for surround sound, youll probably set up your studio similar to our Surround Sound Hookup. One thing is certain: youll want to position HUI in a place central to your work area. It should be close enough to your computer, studio monitors, and of course mixer, to facilitate easy, ergonomic use. If you have your computer in an out-of-theway location (on the floor behind the DAT console; in an hermetically-sealed coffin six feet under), youll want to run your computer keyboard and mouse connections from your computer to HUI. You can then use HUIs KEYBOARD IN and MOUSE IN jacks to place the keyboard and mouse in close proximity to HUI and 3 your mixer. (See Digital Connections L/Mono Section, page 19, for more details.) What follows are a few sample hookups. Each one shows you a basic setup, Headphones lists the equipment youll need, and gives 3 a few tips and/or insights. Of course, your HUI hookup may be a variation on one of these themes these are just suggestions, so see what you come up with.

Scenario: Any audio application with a plethora of inputs to stereo final master. HUI is the control room hub, so the mains or control room outputs of the mixer and DAW feed HUI. Source Material: Live audio, synths, samplers, multitracks, DAW tracks, etc. Outputs: HUIs OUTPUT 1 is fed to a headphone amp/mixer for further distribution to multiple headphone pairs. OUTPUT 2 goes to a dubbing or mastering deck. OUTPUT 3 is routed to a speaker selector box so multiple speaker pairs can be used. Audio Hookup: Tracking: Normally, live audio goes either to tape or hard disk, while MIDI-sequenced synth, samplers, etc. are used to play against during overdub or as final mixdown virtual tracks. Virtual tracks are good for saving tape and hard disk space, and avoiding added noise through additional audio transfer and tracking. The mixer mains, the mastering deck, and the DAW feed HUIs inputs, for control room monitoring purposes.
The mixer aux sends, DAW aux send buses (available in Pro Tools 4.1, for example), and HUI OUTPUT 1 feed the external headphone mixer all for extra and/or remote monitoring purposes. HUI OUTPUT 3 feeds a speaker selector for A/B comparison of big vs. small speakers, mono level-balancing, etc. Mics are used as: direct-to-DAW feeds for boosting signals to line level, or as extra mic preamps to feed line inputs on the mixer. The engineers talkback mic is set to feed all of the monitor outputs. A stereo compressor/limiter feeds the inserts as two mono compressor/limiter units. Digital Control Hookup: HUI MIDI I/O, as well as MIDI sync and triggering to all instruments to sync with digital audio from the DAW. Special Notes: Use the MONO button in the Control Room section to determine phase cancellation during recording (i.e., mics cancelling out each other). MONO is also a useful check for stereo material that is to be aired for mono broadcast (again, as a level balance and phase cancellation check).
Multiple additional inputs: keyboards, drum machines, CD players, mastering decks, etc. buses

Mackie Mixer

(8Bus, CR1604-VLZ, etc.)
CTRL ROOM or MAIN OUTS MAIN BUS OUTS AUX SEND BUSES

Slating Talkback Mic

Voice Talent Mic 2

Voice Talent Mic 1

AUX SENDS
MASTERING DAT or CD RECORDER

Headphones Trigger

Power Amp Speaker Selector Box Headphones Speakers B Speakers A Speakers C

Cassette dubbing deck

Headphone amp/mixer

TROUBLESHOOTING

Having trouble getting things to cooperate? Consult the Troubleshooting chart on this page. It should point you in the general direction of things to check, etc. Then proceed to the following pages to help you narrow down the problem. If you believe the problem is HUI related, see the Service section on page 27.

If youre having trouble getting audio through HUI, check the following:

General

Say, uhhh, is the POWER switch turned on? Sorrygotta ask. Have you tried re-booting HUI by turning it off, waiting a few seconds, and then turning it back on again? Sometimes this can help alleviate the little burps and hiccups that can occur. (Be sure to turn down the volume on any connected power amps first BEFORE re-booting.)

REFERENCE GUIDE

Perform a HUI Hardware Self-Test
HUI has a built-in self-test routine which can help you determine if the problem youre experiencing is HUI related or not. You need the following items to perform the self-test: One standard MIDI cable Two normally-open footswitches (or two 1/4 plugs or patch cords with tip shorted to sleeve) 1. Connect a MIDI cable from Possible HUIs MIDI OUT jack to HUIs MIDI hardware IN jack. This allows HUI to run the problem? test and then loop the information back to itself. 2. Connect a normally-open footYES switch to each of the FOOTSWITCH IN jacks. Perform 3. Plug the power cord into a 3HUI hardware prong AC outlet, that you know has a self-test good safety ground. (You might want (see this page) to test the outlet with an AC outlet tester. You can get one at Radio Shack or most hardware stores.) YES 4. Turn on HUI by pressing the POWER switch on the rear panel. 5. Within three seconds after turnHUI hardware ing on the power, simultaneously tests OK? press the SHIFT and OPTION buttons (located in the Keyboard Shortcuts section at the lower left YES area of HUIs front panel). You will see the 40x2 character VFD on the Cables/ front panel light up and it will prompt connections you with the instructions to complete are OK? the self-test. Note: You can quit the self-test at YES any time by simply turning off HUIs Power switch. Be sure to follow the instructions displayed in the VFD completely. You Verify certain want to be sure HUI is ready to roll software settings?* when youve finished this test. 6. Use the footswitch to step through the self-test. By now you YES may be thinking, Why is it called a self-test when I have to help it Call DAW along? Its because we thought manufacturer Human-Assisted Semi-Self-Test was practically an oxymoron, not to mention being a bit long.

Possible software problem? YES Consult DAW software manual
Call Mackie Tech Support for a Return Authorization (RA) Number

Repair or replace

Get suggestions from your DAW software manufacturer
* Is HUI selected as device
in OMS/FMS? Personality" file loaded into system folder? (Pro Tools users: The personality" file goes in the DAE folder inside the System folder)

Bad Input

Is an INPUT assigned for output to a connected output device? (i.e., speakers or head- phones) Is the proper FADER up? Is the proper FADER assigned? Try unplugging any insert devices from the INSERT jacks. Make sure anything plugged into an INSERT is plugged in correctly (i.e., to first click or second click, depending on what type of plugs youre using). Is the MASTER VOLUME turned up? Are the input and output assignments set correctly? Try the same source signal in another INPUT, set up exactly like the suspect input.

Bad Output

Are any of the MUTE switches turned on? Is an OUTPUT selected? Is HUI connected to your studio monitors or other such speakers? Check your cables to make sure theyre all working properly. Try multiple source and destination substitutes. Check your signal flow and gain staging. Note: The LEVEL controls for the MONITOR OUTPUTS use high-quality DCAs (Digitally Controlled Amplifiers). Due to the discrete nature of a DCA, if you change the level quickly you may perceive a zippering effect as the volume ramps up or down. This is normal, and should not present a problem for normal monitoring purposes.

Fader Touch-Circuits

The faders touch-circuits are designed to disengage the fader motor as soon as you touch the fader knob. When you release the knob, HUI again takes control over the fader (motor engages). The fader knob is electrically conductive, and when your finger touches the knob, HUI senses your touch and sends a message to the DAW through the MIDI connection. The DAW reacts by sending a message back to the HUI to disengage the motor. You can observe the MIDI port IN and OUT LEDs blink on the MIDI interface when you touch a fader. When you release the fader, HUI sends another message to the DAW, via MIDI. Depending on how the DAW is configured for that channel, it may send a message back to HUI to turn on the fader motor. Again, you can observe the MIDI message activity by watching the MIDI interface I/O LEDs blink.

If the motors continue to operate when you touch the knobs, HUI may not be properly grounded. Make sure the AC linecord is plugged into a 3-prong outlet. The outlet should be properly wired and grounded. If youre not sure, test it with a three-wire AC outlet tester, available at most fine hardware stores or electronics supply shops. It will tell you if the polarity of the hot and neutral wires is reversed and if the safety ground is disconnected. Try another AC outlet if youre still not sure if the outlet is properly wired. Make sure the plugs ground pin is not bypassed with a 3-pin to 2-pin adapter. This is important not only for product safety, but to insure that HUI has an earth ground reference for proper operation of the touchcircuits. If the touch circuits still fail to operate properly: 1. Try touching the HUIs chassis with one hand to connect your body to the HUIs ground reference, and touch the fader knob with the other hand. 2. Try installing an anti-static mat from an electronic supply shop, and connect the ground wire between the mat and the ground lug on the HUI (located just above the Power switch on the rear panel.) 3. Try installing a conductive metal sheet beneath the carpet at your workstation. Connect a wire between the metal sheet and the ground lug on the HUI. If none of the above suggestions fix the problem, try the self-test on page 25. If that doesnt work, and youre sure its not a digital/ MIDI-related problem (see next section), refer to Service on the next page.

Digital/MIDI

HUI is a MIDI device. It must be able to send and receive MIDI data to work with your DAW. HUI uses a type of active sensing to let you know that MIDI communication is established. This is indicated by a blinking LED in the bottom right corner of the Time Code Display. Once MIDI communication is established, any interruption in the incoming MIDI data causes OFFLINE to be displayed in the VFD, and the LED to stop blinking.
MIDI configuration software such as OMS (Open Music System) and FMS (FreeMIDI System) are commonly used to facilitate use of third party controllers such as HUI. Therefore, its important to make sure that HUI is defined as a controller device in your OMS or FMS software, and also as a controller in the DAW environment. First, answer the following OMS/FMS-related questions before pressing the PANIC button (not included on HUI): Is AppleTalk off? The computer uses AppleTalk to operate through its printer port; AppleTalk can block MIDI transmission. Does OMS/FMS see the MIDI interface? Is the interface speed set the same in both the OMS/FMS setup and the hardware interface? MIDI wont transfer information if the interface is set to one speed and the software is set to another. If you have multiple setups, is the setup document being used the most current one (or recommended)? Are the MIDI instruments connected to the appropriate port? Are all MIDI connections made properly? (See page 20 for connection diagram.) Are your MIDI cables OK? Many MIDI interface boxes provide indicators to let you know when MIDI data is being sent and received. If HUI passes the MIDI test in its self-test routine (see page 7), any MIDI communication problem must lie elsewhere. Touch one of HUIs faders and move it a little. Does the MIDI interface receive indicator light? If it doesnt, check or replace the MIDI cable between HUIs MIDI OUT jack and the MIDI interfaces IN jack. Now move one of the faders in the DAW software. Does the MIDI interface transmit indicator light? If not, check or replace the MIDI cable between the computer and the MIDI interface To Computer connector. Is the device information configured properly? Is the correct MIDI channel defined to the proper MIDI port? (HUI operates on MIDI channel 1.) Is your MIDI interface working properly? Is it connected to the correct port on your computer? Ummm, is the MIDI interface turned on?

active sensing MIDI message echoing that occurs between HUI and the host DAW to confirm that communication is occuring. The right-hand decimal point in the Time Code Display blinks once per second to indicate that MIDI communication is established. DAW See digital audio workstation. DSP Abbreviation for digital signal processing. DSP can accomplish the same functions found in analog signal processors, but performs them mathematically in the digital domain, with more precision and accuracy than its analog counterpart. Since DSP is a software-based process, parameters and processing functions are easily changed and updated by revising the software, rather than redesigning the hardware. DSP can be found in an outboard effects device, such as a reverb or delay unit, or it can be integrated into a DAW or digital mixing console. discrete channel Used in reference to surround-sound applications, a discrete channel is separate or isolated from the stereo pair of channels it is normally associated with. digital audio workstation (DAW) A dedicated recording/editing software (application) and hardware system, used for hard disk (non-linear) random access playback and recording. Many DAWs are used with personal computers using Windows 95 or Macintosh operating systems, though some use their own proprietary computers. effects devices External signal processors used to add reverb, delay, spatial, or psychoacoustic effects to an audio signal. An effects processor may be used as an insert processor (serial) on a particular input or subgroup, or it may be used via the aux send/return system (parallel). See also echo, reverb.
RS-232, RS-422 serial port connection Two industry standard serial communication protocols, requiring different 9-pin wiring schemes. HUIs RS-232/RS-422 serial port can be used with either type of connection, determined by switching to the appropriate protocol. RS-232 uses unbalanced drivers and receivers, in which one wire is used per signal. RS-422 uses balanced, or differential, drivers and receivers, which require two wires per signal. RS-232 works well for short runs (up to 50 feet), while RS-422 is recommended for longer runs (up to 1000 feet). surround-sound Multi-channel audio playback systems in 4, 5, or 6 channel formats. Surround-sound is typically found in movie theaters and home theater systems. HUIs control room section can accommodate up to six discrete (separate) audio channels, for use in what is termed 5.1 surround. (4.1 surround can also be monitored with HUI.) touch-updatable motor fader HUIs fader knobs are made of conductive metalized plastic, which respond immediately to touch control via capacitive contact between the neutral (ground) control surface and the user. The fader motor uses a high resolution, tightly-tuned servo amplifier, which moves the fader knob and stem along a conductive plastic fader track. Operationally, when you touch the knob, the motor disengages from the fader via internal and software control, concurrently sending out positional status from HUI to the DAW mixer map over MIDI or other serial communication. When you release the fader knob(s), the motor re-engages via control information from the DAW mixer map. VFD Abbreviation for vacuum fluorescent display. HUIs VFD is an 80-character (40 characters by 2 lines) display that shows channel strip DSP functions and other HUI operation parameters. V-Pot Abbreviation for virtual potentiometer, the VPot is considered a soft knob because it performs various functions determined by the DAW software being used with HUI. It acts as a continuous or variable controller and also reflects current value or position via its surrounding 12-segment LED collar.

COLOPHON

For Mackie Designs:
The HUI Reference Guide was written and edited by MARSHALL GOOCH and BRIAN McCULLY. Additional contributions came from Dave Franzwa, Jeff Gilbert, Paul Larson, Carl Malone, Wayne Newitt, and Mackies Tech Support Crew. Thanks also to Tom Bain for the tutorials. Layout, design, and graphic tweakage by GOOCH, from an original concept by Ron Koliha. Original graphics by Sara Delahan. Additional photo tweakage by Bruce Yunker. Proofreading and additional editing by LINN COMPTON. This manual was produced using a whole (Sammamish) slough of software, including Adobe PageMaker, Illustrator, and Photoshop; Microsoft Word, Deneba Canvas 5, and some other super-cool applications whose names we cant remember. The machines used were Apple Macintosh and Mac-clone models of varying degrees of difficulty, with many exciting third-party peripherals and fun doohickeys attached.

For Digidesign:

For contributions to the product and great interaction, in an amazingly patient and positive manner, thanks go to: Dave Lebolt, Mike McRoberts, David Kwan, Mike Rockwell, Dave Conry, Eomann Faye, and Dave Frokker.

GLOSSARY / COLOPHON

HUI LIMITED WARRANTY
Please keep your sales receipt in a safe place.
A. Mackie warrants all materials, workmanship, and proper operation of the HUI for a period of one year from the original date of purchase. If you complete the optional questionnaire portion of the Product Registration Card, the warranty will be extended for an additional two years on all parts and labor, with the exception of faders and fader motors, which retain a one year warranty. If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period, Mackie, at its option, will repair or replace the product. This warranty applies only to equipment sold and delivered within the U.S. by Mackie or its authorized dealers. B. Failure to return the card will not void the 1-year warranty. C. Service and repairs of Mackie products are to be performed only at the factory. Unauthorized service, repairs or modifications will void this warranty. D. To obtain factory service: 1. Call Mackie at 800/258-6883, 8AM to 5PM Monday through Friday (Pacific Time) to get a Return Authorization (RA). Products returned without an RA number will be refused. 2. Pack the HUI in its original shipping carton. If you do not have the carton, just ask for one when you get your RA number, and well send a shipping carton out promptly (at your expense). More information on packing can be found in the Service section of this manual. Also include a note explaining exactly how to duplicate the problem, a copy of the sales receipt with price and date showing, and your return street address (no P.O. boxes or route numbers, please!). If we cannot duplicate the problem at the Mackie Factory or establish the starting date of your Limited Warranty, we may, at our option, charge for service time. 3. Ship the product in its original shipping carton, freight prepaid to: Mackie Designs Inc. Service Department 16220 Wood-Red Road NE Woodinville, WA, 98072, USA IMPORTANT: Make sure that the RA number is plainly written on the shipping carton. E. Mackie reserves the right to inspect any products which may be the subject of any warranty claims before repair or replacement is carried out. Mackie may, at its option, require proof of the original date of purchase in the form of a dated copy of the original dealers invoice or sales receipt. Final determination of warranty coverage lies solely with Mackie Designs Inc. F. Mackie products returned to Mackie and deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced within thirty days of receipt by Mackie at our rainforest factory complex. Products returned to Mackie that do not meet the terms of this Warranty will be repaired and returned C.O.D. with billing for labor, materials, return freight and insurance. Products repaired under warranty at Mackie's factory will be returned freight prepaid by Mackie to any location within the boundaries of the USA. G. This warranty is extended to the original purchaser and to anyone who may subsequently purchase this product within the applicable warranty period. H. This is your sole warranty. Mackie does not authorize any third party, including any dealer or sales representative, to assume any liability on behalf of Mackie Designs or to make any warranty for Mackie Designs. I. THIS IS THE ONLY WARRANTY GIVEN BY MACKIE AND IS IN LIEU OF ALL OTHER WARRANTIES. ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE, SHALL BE STRICTLY LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL PURCHASE FROM A DEALER. UPON EXPIRATION OF THE 1-YEAR WARRANTY PERIOD, MACKIE SHALL HAVE NO FURTHER WARRANTY OBLIGATION OF ANY KIND, EXPRESSED OR IMPLIED. MACKIE SHALL IN NO EVENT BE OBLIGATED FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES THAT MAY RESULT FROM ANY DEFECT OR WARRANTY CLAIM, EXPRESSED OR IMPLIED. Some states do not allow exclusion or limitation of incidental or consequential damages or limitation on how long implied warranties last, so some of the above limitations and exclusions may not apply to you. This warranty provides specific legal rights. The purchaser has implied warranty rights and you may also have other rights which vary from state to state.

Baby HUI

Users Guide
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
RISK OF ELECTRIC SHOCK DO NOT OPEN

SERIAL NUMBER

MANUFACTURING DATE
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
AVIS: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
UTILISE UN FUSIBLE DE RECHANGE DE MME TYPE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE
REPLACE WITH THE SAME TYPE FUSE AND RATING. DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE

EXTERNAL POWER

THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGNS INC "MACKIE" AND THE "RUNNING MAN" FIGURE.CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE DESIGNS INC. WOODINVILLE WA USA MADE IN USA FABRIQUE AU USA COPYRIGHT 2001

+ 7.5 VDC

REC RDY

SEND 1

SEND 2

SEND 3

SEND 4

SIGNAL

SIGNAL BYPASS/OFF READ TRANSPORT MEM LOC UNDO
FADERS WRITE MUTES TOUCH MIXER EDIT

PANS SEND LVLS SHIFT

BANK SELECT

CHANNEL

REWIND

FAST FWD

RECORD
Compact Master Control Surface for Digital Audio Workstations

CAUTION

RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL
D. The unit does not appear to operate normally or exhibits a marked change in performance; or E. The unit has been dropped, or its chassis damaged. 12. Servicing Do not attempt to service this Mackie product. All servicing should be referred to the Mackie Service Department. 13. Lightning Unplug the product during lightning storms or when unused for long periods of time. 14. Grounding and Polarization To prevent electric shock, do not use the polarized plug with an extension cord, receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure. Do not defeat the grounding by plugging into an ungrounded receptacle or ground lift adapter. This apparatus does not exceed the Class A/Class B (whichever is applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications. ATTENTION Le prsent appareil numrique nmet pas de bruits radiolectriques dpassant las limites applicables aux appareils numriques de class A/de class B (selon le cas) prescrites dans le rglement sur le brouillage radiolectrique dict par les ministere des communications du Canada.
ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR LUSAGER. CONFIER LENTRETIEN AU PERSONNEL QUALIFIE. AVIS: POUR EVITER LES RISQUES DINCENDIE OU DELECTROCUTION, NEXPOSEZ PAS CET ARTICLE A LA PLUIE OU A LHUMIDITE
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the products enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. Le symbole clair avec point de fl che lint rieur dun triangle quilat ral est utilis pour alerter lutilisateur de la pr sence lint rieur du coffret de "voltage dangereux" non isol dampleur suffisante pour constituer un risque d l ctrocution. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point dexclamation lint rieur dun triangle quilat ral est employ pour alerter les utilisateurs de la pr sence dinstructions importantes pour le fonctionnement et lentretien (service) dans le livret dinstruction accompagnant lappareil.
Important Safety Instructions
1. Read instuctions Read, understand and follow all safety and operating instructions before using this Mackie product. 2. Retain Instructions Keep these safety and operating instructions for future reference. 3. Heed Warnings Follow all warnings on this Mackie product and in these operating instructions. 4. Water and Moisture Do not use this Mackie product near water for example, near a bathtub, kitchen sink, garden hose, incontinent poodle, sweaty drummer, etc. or when condensation has formed on the unit. 5. Cleaning Clean only with a dry cloth. 6. Heat and Ventilation Locate this Mackie product away from heat sources such as radiators, campfires, compost pits, heliarc welders, magma flows, etc. Do not block the ventilation openings or install in spaces that prevent adequate air circulation to the unit. 7. Power Sources Connect this Mackie product only to a power source of the type described in these operating instructions or as marked on the product. 8. Power Cord Protection Route power supply cords so that they are not likely to be walked upon, tripped over, or abraded by items placed upon or against them. Pay particular attention to cords at plugs, convenience receptacles, and the point where they exit the product. 9. Object and Liquid Entry Do not drop objects or spill liquids into this Mackie product. Clean only with a damp cloth; do not clean with liquid or aerosol cleaners. 10. Attachments Use this Mackie product with only the accessories specified in this manual. 11. Damage Requiring Service This Mackie product should be serviced only by qualified service personnel when: A. The power supply cord or the plug has been damaged; or B. Objects have fallen onto, or liquid has spilled into the unit; or C. The unit has been exposed to rain or water; or

FCC Information NOTE: This equipment has been tested and found to comply with the limits for Class B digital devices, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
WARNING To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.
Part No. 0003964 Rev. A 07/Mackie Designs Inc. All rights reserved. Printed in the U.S.A.

Contents

Important Safety Instructions---------------------------- 2 Introduction -------------------------------------------------- 4 The History of HUI ---------------------------------- 4 What is a Controller? -------------------------------- 4 General Overview ------------------------------------ 4 Front Panel Description ------------------------------------ 5 Channel Strips ----------------------------------------- 5 Fader ------------------------------------------- 5 MUTE ------------------------------------------- 5 SOLO ------------------------------------------- 5 SIGNAL Indicator ---------------------------- 5 Rotary Encoder ------------------------------- 6 Master Section ---------------------------------------- 6 Encoder Assignment Section ----------------------- 6 PAN --------------------------------------------- 6 SEND 1-4 --------------------------------------- 6 Automation Section --------------------------------- 6 BYPASS/OFF ---------------------------------- 6 READ ------------------------------------------- 6 WRITE ------------------------------------------ 7 TOUCH ----------------------------------------- 7 FADERS -------------------------------------- 7 MUTES --------------------------------------- 7 PANS ----------------------------------------- 7 SEND LVLS----------------------------------- 7 Display Section---------------------------------------- 7 TRANSPORT ----------------------------------- 7 MEM LOC -------------------------------------- 7 MIXER ------------------------------------------ 8 EDIT --------------------------------------------- 8 Utility Section ----------------------------------------- 8 UNDO ------------------------------------------ 8 SHIFT ------------------------------------------- 8 Navigation Section ----------------------------------- 9 RTZ ---------------------------------------------- 9 END --------------------------------------------- 9 IN --------------------------------------------- 9 OUT ------------------------------------------ 9 Bank Select (Left and Right) -------------- 9 Channel Select (Left and Right)-------- 9 Bank/Channel Display --------------------- 9 Transport Section ------------------------------------ 9 REWIND --------------------------------------- 9 FAST FWD ------------------------------------- 10 STOP ------------------------------------------- 10 PLAY -------------------------------------------- 10 RECORD --------------------------------------- 10 Rear Panel Description ------------------------------------- 10 MIDI IN and OUT ---------------------------- 10 External Power ------------------------------- 10 Power Switch --------------------------------- 10 PC and Mac Interfacing ------------------------------------ 11 The MIDI Interface ----------------------------------- 11 Installation -------------------------------------------- 11 Supported DAW Platforms ------------------------- 12 Troubleshooting --------------------------------------------- 12 Power --------------------------------------------------- 12 MIDI ----------------------------------------------------- 12 Service --------------------------------------------------------- 12 Specifications ------------------------------------------------ 13

Please write your serial number here for future reference:

Purchased at:

Date Of Purchase:

Introduction

Thank you for choosing Mackie Designs for your Digital Audio Workstation (DAW) control solution. Baby HUI provides the familiar feel of analog-style mixing to your DAW environment. But it also delivers the most complete feature set and software compatibility of any control surface available today. Baby HUI gives you hands-on control of all of your DAWs parameters. Now you can create a fade with a real fader. Move a HUI fader and your DAW makes note of your action and mirrors it on the computer screen. Similarly, when you make a fader move on your screen, Baby HUIs fader moves, too. Adjust the pan control by turning one of Baby HUIs rotary encoder knobs and the DAW takes care of the rest. In fact, mouse-clicking is practically a thing of the past with Baby HUI, what used to take multiple mouse-clicks and key combinations can now be accomplished with the push of a button or two. You can use Baby HUIs hands-on controls to do everything from recording a single track to adjusting aux send/return levels, automating mixes, and mixing programs for surround-sound. Touch-updatable moving faders, rotary and push encoders, and an ergonomically laid-out control surface make Baby HUI the logical choice for returning analog-style control to your digital world. You can do so much with Baby HUI. Its a mix control surface that sets new levels of interactivity within todays and tomorrows DAW environments it will grow with your system, DAW software upgrades, etc. Baby HUI can greatly improve your creativity while diminishing your workload and the repetitive grind of multiple sessions.

The History of HUI

When Mackie Designs introduced HUI (Human User Interface) in 1997, it was one of the industrys first affordable motorized touch-sensitive fader controllers available for Digital Audio Workstations (DAWs). Digidesign was the first to provide support for HUI with its Pro Tools DAW, and over time other DAW manufacturers have recognized the value added by supporting HUI in their software. Now in 2002, Mackie introduces Baby HUI. As the name implies, it is a scaled-down version of the original HUI. Though it doesnt have as many buttons and controls as its big brother, it retains the essential controls that are most useful for tracking and mixing on a Digital Audio Workstation.

What is a Controller?

One of the big drawbacks of any DAW is having to use a mouse and keyboard to perform things you used to do on an analog mixer. Clicking on a visual representation of a fader and trying to drag the mouse smoothly in order to achieve an amazing fadeout is difficult, if not impossible, for many of us. Likewise, turning a virtual knob on a computer screen just doesnt cut it for some folks. And thats why Mackie Designs created HUI, and now, Baby HUI.

CHANNEL SECTION

General Overview
Baby HUIs control surface is divided into two main sectionsthe Channel Strips Section and the Master Section. It was designed to look and feel like a small mixing console, but with one big difference. No audio actually passes through Baby HUI. Instead,

MASTER SECTION

Front Panel Description
it sends and receives control messages to and from the host computer via the MIDI IN and OUT connections on the back. Thats how the fader on your monitor screen moves when you move a fader on Baby HUI, and vice versa. Channel Strip Features In addition to the faders, each channel strip also has a MUTE and a SOLO button. A signal LED indicates when signal is present on the channel, or when the channel is selected. At the top of the channel strip is the multifunctional rotary and push encoder. This serves the dual-function of selecting and assigning a channel strip, as well as providing pan control and send level control for the channel. Master Section Features In the Master Section, the top row of buttons are used to assign the function of the rotary encoders on the channel strips (PAN, SEND 1-4). The Automation Section has four buttons for selecting the automation mode (READ, WRITE, TOUCH, or BYPASS/OFF) and, by holding down the SHIFT button, the parameters to automate (FADERS, MUTES, PANS, SEND LVLS). There are four display buttons to quickly open and close the most commonly used windows in your DAW (TRANSPORT, MEMORY LOC, MIXER, and EDIT). The UNDO button tells the software to undo the most recent operation. Pressing the UNDO button again will redo the operation. The SHIFT button is a modifier that allows you to perform a second function with several of Baby HUIs buttons. The second function is indicated on the control surface with a box under the button, and with a symbol in this text. The two navigation buttons, RTZ (Return to Zero) and END, are used to quickly get to the beginning or end of the session, and to select points for setting up loops and punch-ins/outs (IN and OUT function with the SHIFT button). The BANK SELECT buttons change the assignment of the eight channel strips in banks of eight, to the next eight channels (button right) or the previous eight channels (button left). Holding down the SHIFT button moves the channels assignments one channel at a time (rather than in banks of eight channels). The display indicates which bank is currently selected. The Transport Section provides buttons for MMC (MIDI Machine Control) of the five common transport operations (REWIND, FAST FORWARD, STOP, PLAY, and RECORD).

Channel Strips

Baby HUI has eight channel strips, each with the following controls:
This 60 mm touch-sensitive motorized fader controls the gain of the corresponding channel in your DAW. The faders touch-circuits are designed to disengage the fader motor as soon as you touch the fader knob. The silver knob on the control is electrically conductive and, when your finger touches the knob, it senses your + touch and sends a message to the DAW REC RDY through the MIDI connection. The DAW reacts by sending a message back to SIGNAL Baby HUI to disengage the motor. When you release the fader, another message is sent to the DAW via MIDI SOLO and, depending on how the DAW is configured for that channel, it may send a message back to Baby HUI to turn on the fader motor. MUTE This feature is what allows you to punch in automation moves at will when Baby HUI is in Touch Automation mode.

Pushing the MUTE button turns off that channels output signal and illuminates the red LED on the button. Pushing the button again disengages the mute function and turns off the LED.
Pushing the SOLO button isolates that channels output signal to the control room or monitoring bus and illuminates the yellow LED on the button. Pushing the button again disengages the solo function and turns off the LED.

SIGNAL Indicator

This green LED illuminates when a signal is present in the channel. It also indicates when the channel has been selected either in the software or by pushing the encoder at the top of the channel strip.

Rotary Encoder

The rotary encoders are multifunction controls that can be used + as a pan control or a send level REC RDY control. The function for the rotary encoder is assigned with the top row of buttons in the Master Section (PAN, SEND 1-4). But wait.theres more! Baby HUIs encoders are also push buttons that are used to select a channel as active in the software. An active channel is indicated by the green SIGNAL LED illuminating on the channel strip. Holding down the SHIFT button and pressing the encoder activates Record Ready status for that channel, to prepare it for a recording pass. The encoder button is also used to access various automation parameters, which will be described in more detail in the Automation Section.

Automation Section

Most digital audio workstations have very specific interfaces for enabling and writing automation data. Usually there are two basic operations that are required in using an automation systemarming the right parameters to be automated, and using the appropriate automation mode. The former tells the software specifically which set of parameters (faders, mutes, pans, etc.) you want to enable for use in automation, whereas the latter specifies exactly how you want to use those parameters. The Automation Section of Baby HUI is designed to give you easy, one-button access to both of these types of commands. Each of the four buttons in this section have dual-functionality, which means each button can be used to do two separate things. You will notice that each button has a label above and below it help you understand what function it serves. The label above the button indicates the automation mode selection, and the label in the box below the button designates the parameter you are arming for automation. Their respective functions are based on whether or not the SHIFT button is held down when the button is engaged. These four buttons (BYPASS, READ, WRITE, and TOUCH) are used with the push-select channel encoders to assign the automation mode for each channel. You must hold down the desired automation mode button and then push the encoder on the channel that you want to engage into that mode.

Master Section

The Master Section can be subdivided into six subsections: Encoder Assignment Section Automation Section Display Section Utility Section Navigation Section Transport Section
Encoder Assignment Section
The upper right side of Baby HUI has five encoder assignment buttons, which determine the function of the rotary encoders on the channel strips. Only one of these buttons can be selected at a time.

BYPASS/OFF

This mode bypasses all automation data until another automation mode is selected. Think of it as a de-activation button that lets you use Baby HUI freely until the automation sequence(s) are needed.
Pressing the PAN button assigns the encoders to function as channel pan knobs. When PAN is active, the green LED in the PAN button illuminates.
This mode enables the controller to follow any pre-written automation events. You are not able to write new automation moves when Baby HUI is in Read Modeit only follows what has been written and locks out all new moves. Enable Read Mode, and try moving a fader for a channel that has moves written for itand youll see what we mean!

SEND 1-4

Pressing a SEND button assigns the encoders to function as auxiliary send controls for the channel. Most DAWs support multiple sends to various internal and external processors and buses. Baby HUI can control up to four send levels. The active SEND button is indicated by the illuminated green LED in the button.

TRANSPORT

MEM LOC

MUTES

This button either enables or disables the mute buttons from writing or reading automation sequences. Engage this parameter when you want to write new mute events into your software, or have Baby HUI follow the automated mutes you have already written.

FADERS WRITE

MUTES TOUCH MIXER EDIT

SEND LVLS

This is the button to engage when you want to start writing new automation sequences with Baby HUI. Use this mode to create specific fader moves, mute sequences, panning moves, and any other automated adjustments as needed.
This button either enables or disables the rotary encoders from writing or reading panning automation sequences. Make sure that the PAN button in the Encoder Assignment Section is lit before using Baby HUIs encoders to write pan events.
This activates the touch-sensitivity feature of Baby HUIs eight motorized faders. When in Touch mode, the computer automatically starts writing events to the selected track as soon as your finger touches the fader. This allows you to do quick and timely punch-ins for new automation moves, whether or not automation data already exists on the track, just grabbing a fader and making a move! Automation Parameters The above four automation buttons also can activate a specific set of controls for automation. For example, you may want to write some Mute moves in a certain song or piece, in which case you would press the MUTES button while holding down the SHIFT button. However, if you want to write moves using both Mutes and Faders, you would engage both parameters. Arming the right parameter that you want to automate ensures that no accidental or unwanted moves will be written (or wanted moves overwritten) while operating Baby HUI. To arm a parameter on Baby HUI for automation, simply press and hold down the SHIFT button and then press the automation button that corresponds with the parameter you want to automate. You can activate a single parameter to automate, or engage multiple parameters at once to automate some or all of Baby HUIs channel strip controls.

SEND LVLS

This button either enables or disables the rotary encoders from writing or reading send level automation sequences. Make sure that the appropriate SEND button in the Encoder Assignment Section is active before using Baby HUIs encoders to write send level events. Note: Unlike Baby HUIs faders and mute buttons, the rotary encoders do not physically move when automated sequences are being played back, even though the tracks still perform the automated tasks as written.

Display Section

Digital audio workstations communicate their various features to the user through multiple floating or fixed windows, or displays. Baby HUI has four buttons dedicated to immediate access of the four most commonly used displays of a DAW. These display buttons open and close the corresponding windows with the press of a single button, thus saving you valuable time and effort wandering through various pull-down menus and sub-menus.
Pressing this button opens the Transport Display in the software. This can be helpful for in-depth positional reference and record/playback control, as well as access to presets and other functions (depending on your software). A second press of the button either closes the Transport Display or makes it inactive in the software.

FADERS

This button either enables or disables the faders from writing or reading automation sequences. Fader automation is commonly used for creating automatic level adjustments throughout a section of audio, and Baby HUIs faders can be used for this purpose when this mode is activated.
Pressing this button opens the Memory Locator Display in your software. This can be helpful in accessing and labeling/numbering specific location points within a given piece of music or audio. A second press of the button either closes the Memory Locator Display or renders it inactive in the software.

Utility Section

There are two buttons in this section UNDO and the SHIFT Modifier.
Pressing this button opens the Mixer Display in your software. This display is a visual rendition of Baby HUI itself. You will notice that the screen has channel strips that all follow the movements of Baby HUIs controls. Thus, you can use the Mixer Display to verify that the software is seeing your controls and reacting correctly to your use of Baby HUI. A second press of the button either closes the Mixer Display or makes it inactive in the software.
This is a single button undo command that tells the software to undo the last thing you did. This button performs the same common keyboard commands CTRL+Z (for PCs) or APPLE+Z (for Macs). The first push of Baby HUIs Undo Button will undo the last command, and a second push will redo the last command. TIP: Use Undo/Redo right after an automation pass to make a quick A/B comparison of your moves and save yourself the time of going back later.

This is the one button on Baby HUI that requires some understanding to use correctly. The SHIFT button is a Modifier, which means it is used in conjunction with other buttons and knobs on Baby HUI. When pushed by itself, the SHIFT Button does nothing. Only when held down and another parameter is activated does the Shift function take place. Notice the label of the SHIFT Button has the text SHIFT enclosed in a white box. This is intentional. The white box labeling is a visual association to all of Baby HUIs shift-supported controls. So, by holding down the SHIFT button and pressing a shift-supported control, you engage the function labeled in the corresponding white box underneath that control. To disable a shift-supported function, simply hold down the SHIFT button and press the control associated with that function. Below is a chart of what happens when you hold down the SHIFT button and engage the listed controls:
Pressing this button opens the Edit Display in your software. Most software Edit Displays have their tracks laid out horizontally, with track headers along the left hand side of the screen, a virtual playback head (usually represented by a vertical line) crosses from left to right across the screen as the transport is used, giving the interface a tape deck-style look. TIP: The tracks in the Edit Display have modes that can be set to display different information, i.e., recorded data, track volume, panning, etc. To help you use Baby HUI, we recommend using the level/volume data display as a visual accompaniment to writing automation with Baby HUIs faders. You will see the movements you make with Baby HUI either in real time or calculated after the automation pass, depending on your software and computers resources.
CONTROL Push Encoder Bypass/Off Read Write Touch RTZ END BANK (Left) BANK (Right)
FUNCTION Record Arms the selected track Arms faders for automation Arms Mutes for automation Arms Pans for automation Arms Send Levels for automation Begins a new selection area Ends a new selection area Moves channel controls left by one channel Moves channel controls right by one channel
LABEL (in box) REC RDY FADERS MUTES PANS SEND LVLS IN OUT CHANNEL (Left) CHANNEL (Right)

Navigation Section

This section gives you quick access to navigational shortcuts designed to help you get around your DAW, which sometimes can be the most time-consuming aspect of using a computer for audio production. This section has four buttons and a small two-character display. controlling channels 1-8 and you push the right Bank Select button, Baby HUI will now control channels 9-16. When considering the extensive numbers of channels supported by many of todays DAWs, bank selecting is a key navigational tool on Baby HUI.
RTZ stands for Return to Zero and returns the playback head (in software) to the top of your session (as they say in musician-land) or to 00:00:00:00.

Channel Select (Left and Right)
Holding down the SHIFT button and pressing the left or right Channel Select button jumps Baby HUI over to the next adjacent channel on either the left or right side of its current location. For example, if Baby HUI is currently controlling channels 1-8 and you hold SHIFT and push the right Channel Select button, Baby HUI will now control channels 2-9. Another push will jump Baby HUI to control channels 3-10, and so on. Note: When changing banks or channels, the channel strips remember their settings even if they are not currently active channels. So, when you see the faders jump as you change banks/channels, you are just seeing the controller react to the new channel settings.
This button jumps the playback head to the last point in the session where audio or MIDI data was recorded. Think of it as the opposite of the RTZ button.
The IN Button is used during playback only. Holding SHIFT and pressing this button during playback drops a new selection point indicator along the timeline of the Edit Display. Playback continues even though the selection point has been set.

Bank/Channel Display

This two-digit display indicates the currently selected bank of channels on Baby HUI. Upon powering up Baby HUI, this display shows the currently installed firmware build for a period of five seconds, then reads 1 to indicate you are currently on Bank 1. A single push of the right bank button increases the display to 2 for Bank 2, and so on. Bank 1 represents channels 1-8, Bank 2 channels 9-16, etc. When navigating channel by channel (by holding down the SHIFT button), the display shows you the channel number associated with the first channel strip on Baby HUI (the one farthest to the left).
This button is also used during playback. The OUT button drops in the ending point of the selection established by the IN button (see previous) and is indicated on the timeline. TIP: Use IN and OUT (not the awesome burger place) to mark sections of a song for setting up loops, punching in automation, or making specific edits.
Bank Select (Left and Right)
Even though Baby HUI only has eight faders, it can control as many channels as the software can support, even though it only provides access to eight channels at any one time. Each group of eight channels is commonly referred to as a bank, and Baby HUI provides access to your software mixing console one bank at a time. Pressing the left or right Bank Select button jumps Baby HUI over to the next adjacent eight channels on either the left or right side of its current location. For example, if Baby HUI is currently

Transport Section

Baby HUI has a tape-style transport in the lower right corner of the control surface that provides control for the position of the playback head for a given song or session. In short, it controls the software application like a tape machine. Included in the Transport Section are five main buttons:

Pressing this button moves the current playback position in the song/session backward along the time line, and activates the yellow LED on the button. Once the playback position is at the top (or the beginning) of the song/session, the REWIND button de-activates and the yellow LED turns off.

Rear Panel Description

The rear panel of the Baby HUI is used only for power supply and MIDI interfacing with your host computer and software application.

MIDI IN and OUT

Baby HUI has two female DIN5 ports, one for MIDI IN and one for MIDI OUT. These ports provide bi-directional communication between Baby HUI and your host computer and software application. These ports must be connected to your computers MIDI interface for Baby HUI to perform to specification. See PC and Mac Interfacing on page 11 for more information on getting the controller set up correctly in your host application.
Pressing this button moves the current playback position in the song/session forward along the time line, and activates the yellow LED on the button. Once the playback position is at the very end of the softwares overall timeline constraints, the FAST FWD button de-activates and the yellow LED turns off.
Pressing this button immediately halts playback of the song/session, and activates the yellow LED on the button. The LED on the STOP Button deactivates as soon as another transport mode is selected, such as PLAY or REW.

External Power

This is where you connect the female end of the external power supply provided with Baby HUI. The other end of the cable needs to be connected to your AC power supply (between 90 VAC and 264 VAC), like a wall receptacle, a power conditioner, or a power strip. The power supply converts the AC voltage into the proper voltage for Baby HUI to operate.
Pressing this button begins playback of the song/ session from the current position of the playback head, and illuminates the green LED on the button. When either the REWIND, FAST FWD, or STOP button is pressed, the playback of the song/session changes to the function of that button, and the green LED on the PLAY button turns off.

Power Switch

This switch must be turned on for Baby HUI to receive the power it needs to operate. Make sure this switch is in the ON position before you attempt to use Baby HUI. (It never hurts to be reminded!)
This red button can be used to either a) begin recording audio on any number of record-enabled track(s), or b) begin writing automation moves to those channels that are set to automation write mode. Activation of the record function is indicated by the red LED on the RECORD button.

PC and Mac Interfacing

Installation The MIDI Interface
As you know from the introduction of this manual, Baby HUI must be connected to a MIDI-compatible computer in order to perform its functions. There are a wide variety of MIDI interface options available for Macs and PCs in todays market, which include (but are not limited to): Audio/MIDI PCI Cards USB MIDI Interfaces Serial Port MIDI Interfaces Multi-Port MIDI Interfaces Since most MIDI interfaces work in a similar way, it is outside the scope of this manual to recommend specific MIDI Interfaces for use with Baby HUI. We will not tell you which interface to usewe will, however, help you get Baby HUI in communication with your preferred audio application through whatever interface you want to use. TIP: Baby HUI works best when its MIDI communication is isolated from all other MIDI equipment. So, if you use multiple MIDI devices hooked up to a multi-port MIDI interface, you might consider establishing an isolated pathway to and from Baby HUI and the computer on a separate port. The most important thing of all is getting your DAW software application to see Baby HUI as a MIDI control device. Make sure you read the following Installation instructions and refer to your particular DAWs documentation for specific instructions on establishing communication with Baby HUI. Connect Baby HUI to your MIDI interface via two MIDI cables (IN and OUT). Connect one end of the external power supply to Baby HUI, and the other end to an AC power source between 90 VAC and 264 VAC (5060 Hz). Refer to the illustration below. Turn on Baby HUIs POWER switch and turn on the computer. Launch your HUI-supported software program of choice. Select your HUI-supported softwares console or surface manager set-up window. Select the HUI MIDI Mapping or MIDI Control Surface Personality. If it is not included in the version of software you are using, go to the software companys website or to www.mackie.com/babyhui and download the MIDI map or personality file for your particular application. Establish the MIDI communication between your MIDI interface and Baby HUI. Examples of MIDI interface software include OMS (Open Music System), FMS (FreeMIDI System), and others. Make sure your computer can see Baby HUI as a MIDI device and has a port dedicated to its use. Note: Refer to the OMS or FMS documentation and to the software applications documentation for instructions on configuring OMS or FMS for Baby HUI. Once the appropriate MIDI map is selected within your softwares preferences, Baby HUI will be recognized automatically.

MIDI IN

MIDI OUT External Power Supply
Digital Audio Workstation

MIDI Interface

Computer Serial or USB Connection

Supported DAW Platforms

As of this printing, the following systems support Baby HUI MIDI mapping protocol as a controller. Be aware that every version mentioned in this list is the earliest possible version that supports Baby HUI. Mac OS Digidesign ProTools 4.1 MOTU Digital Performer 2.7 Steinberg Nuendo 1.5.3 Windows Steinberg Nuendo 1.5.3 Mackie Soundscape32 3.1 Mackie Mixtreme 1.2 Please note that this list is an accounting of what is available today. We are constantly pursuing other DAW manufacturers to support Baby HUI, so make sure you check any updates at www.mackie.com/ babyhui. Note: Baby HUI uses the HUI MIDI Mapping, which means you need to select HUI in the respective softwares console or controller interface menu. You will not see Baby HUI, so select HUI instead.

Troubleshooting

Having trouble getting things to cooperate? Please review the following troubleshooting questions to help narrow down the problem. If the problem is related to setting up and using Baby HUI with your DAW software, contact your software manufacturers technical support. If you are absolutely, positively sure it is a hardware related problem, then go to the repair section next for further information.
Our favorite question: Is the POWER switch on? Is the external power supply properly connected to the back of Baby HUI? Is the external power supply connected to a live AC outlet? You can check it with a tester or lamp.
controllers such as Baby HUI. Therefore, its important to make sure that Baby HUI is defined as a controller device in your OMS or FMS software, and also as a controller in the DAW environment. First, answer the following OMS/FMS-related questions before pressing the PANIC button (not included on Baby HUI): Is AppleTalk off? The computer uses AppleTalk to operate through its printer port; AppleTalk can block MIDI transmission. Does OMS/FMS see the MIDI interface? Is the interface speed set the same in both the OMS/FMS setup and the hardware interface? MIDI wont transfer information if the interface is set to one speed and the software is set to another. If you have multiple setups, is the setup document being used the most current one (or recommended)? Are the MIDI instruments connected to the appropriate port? Are all MIDI connections made properly? (See page 11 for a typical connection diagram.) Are your MIDI cables OK? Many MIDI interface boxes provide indicators to let you know when MIDI data is being sent and received. Touch one of Baby HUIs faders and move it a little. Does the MIDI interface receive indicator light? If it doesnt, check or replace the MIDI cable between Baby HUIs MIDI OUT jack and the MIDI interfaces IN jack. Now move one of the faders in the DAW software. Does the MIDI interface transmit indicator light? If not, check or replace the MIDI cable between the computer and the MIDI interface To Computer connector. Is the device information configured properly? Is the correct MIDI channel defined to the proper MIDI port? (Baby HUI operates on MIDI channel 1.) Is your MIDI interface working properly? Is it connected to the correct port on your computer? Ummm, is the MIDI interface turned on?

Service

Service for Baby HUIs bought and residing in the United States is available only at Mackie Designs. Baby HUI owners outside the U.S. should consult their local Mackie dealer or distributor for service. Now then, please follow these instructions: 1. Review the preceeding Troubleshooting section. Assuming youve done so, and used up your voluminous reserves of common sense 2. Have your Baby HUI serial number ready hopefully you copied it down in the front of this manual (page 3).
Baby HUI is a MIDI device. It must be able to send and receive MIDI data to work with your DAW. MIDI configuration software such as OMS (Open Music System) and FMS (FreeMIDI System) are commonly used to facilitate use of third party
3. Call Mackie Tech Support at 800-258-6883 (8 AM to 5 PM, Pacific Time) to explain the problem. If it cant be solved over the phone, you will be issued an RA (Return Authorization) number. You must have an RA number before you can obtain service from the factory. 4. Pack the Baby HUI in the original box, with the original foam innards or other packing materials. You DID save that stuff, didnt you? If you didnt, youll need to purchase a new box and packing materials from Mackie. Mackie is not responsible for any damage resulting from shipments of product in nonoriginal packaging. 5. Include a legible note stating your name, return shipping address (no P.O. boxes of course), daytime phone number, the RA number, and a detailed description of the problem, including how we can duplicate it.
6. Write the RA number in HUGE letters on top of the box. 7. Ship the Baby HUI to Mackie. We recommend you get insurance on the package. Send Baby HUI to this address: Mackie Designs Inc. Service Department 16140 Wood-Red Rd. NE, Ste. 5 Woodinville, WA 98072 8. Well try to fix Baby HUI within five business days. Ask Tech Support for current turnaround times when you call for your RA number. We normally send everything back prepaid using UPS Orange (three-day air). However, if you rush your Baby HUI to us via Next-Day Air, well do the same for the return trip. This does not necessarily apply to nonwarranty service.

Specifications

Baby HUI MIDI Implementation Chart Function Channel Mode Default Changed Default Messages Altered True Voice Transmitted O X X X O X Version: 1.0.0 Recognized O X X X X O Remarks Channel 1 only Not Applicable Date: 7/01/02

Note Number

00 Sent 7F Received Used for compatibility with HUI "Active Sense"
Velocity Aftertouch Pitch Bend Control Change
Note ON Note OFF Keys Channels
X O Used for Signal Present LEDs X X X X 00-07 Faders MSB 00-07 Faders MSB Fixed specification 20-27 Faders LSB 20-27 Faders LSB Fader resolution: 40-4C V-Pots 0C, 2C LEDs (00-07 MSB) 0F, 2F Switches (20-27 LSB)
Program Change true number X X System Exclusive X O 7-Segment Display System Common Song Pos X X Song Sel X X Tune X X System Clock X X Real-time Messages X X Aux Local Control X X Messages All Notes Off X X Active Sense X X System Reset X X Notes: A full description of System Exclusive and command architecture is available to developers through Mackie Designs Inc. Software Engineering Department. Mode 1: Omni On, Poly Mode 3: Omni Off, Poly Mode 2: Omni On, Mono Mode 4: Omni Off, Mono O: Yes X: No