24-bit 16-channel A/D Converter

Owners Manual

v1.1 April 2002
Apogee AD-16 Users Guide Written by David Kimm and Julio Alvarez. Production, editing and running round in circles by Richard Elen, with valuable assistance from Seth Reinhart. Apogee is a Registered Trademark of Apogee Electronics Corporation. All other trademarks are property of their respective holders. Technology within the AD-16 may be covered by one or more patents that are the property of Apogee Electronics Corporation. Infringement of said patents or any relevant other naughty things may result in one or more uncomfortable and potentially financially-damaging encounters with members of the legal profession. Registered User Customer Support: For customer support, please call (310) 915-1000 and ask for Tech Support, or email support@apogeedigital.com. Technical Support is available to registered owners. Features and specifications subject to change without notice. 2002 APOGEE ELECTRONICS CORPORATION 3145 Donald Douglas Loop South Santa Monica, California 90405-3210 USA Tel: +1 310/915-1000 Fax: +1 310/391-6262 Email: info@apogeedigital.com Web: http://www.apogeedigital.com/ This manual is copyright 2002 by APOGEE ELECTRONICS CORPORATION. All rights reserved. Under copyright laws, this manual may not be duplicated in whole or in part without the written consent of Apogee. Just drop us an email and tell us why you need to copy it.

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Apogee AD-16 Users Guide

Warnings

CAUTION: To reduce the risk of electrical shock, do not remove the cover. No user serviceable parts inside; refer servicing to qualified personnel. To change the operating voltage or change the firmware EPROM, it is necessary to remove the cover of the unit. As a result, such operations must be carried out only by technicallyqualified personnel. WARNING: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture. This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosurevoltage that may be sufficient to constitute a risk of shock. Operations indicated with this symbol should be carried out only by technically-qualified personnel. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Read the manual.

Environmental warnings

Never touch the AC plug with wet hands. Do not use this unit in damp areas or near water. Avoid damaging the AC plug or cord and potentially causing a shock hazard. If liquids spill into or onto the DA-16, disconnect the power and return to your dealer for servicing. This unit should only be connected to an AC power supply of the correct voltage. Check with your dealer if in doubt. Precautions should be taken so that the grounding or polarization of the AC power is not defeated. Unplug the AC cord when the unit is unused for long periods of time. This unit should only be cleaned as recommended by the manufacturer, or damage to the finish may result. To avoid potential damage to your unit, only use in areas where proper ventilation and moderate temperatures are assured. AC voltage ratings for electrical power vary from area to area. Severe damage to your unit is possible if your DA-16 is configured incorrectly for your local power. If in doubt, consult an Apogee dealer. A label adjacent to the power connector indicates the voltage to which the unit was set on leaving the factory. Instructions for changing the power input voltage are provided. We strongly advise you to check that the voltage label remains current and is updated if the input voltage setting is changed.

Power warning

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when operated in a commercial environment. 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 take whatever measures may be required to correct the interference at his own expense.

FCC warning

Copyright Notice
The Apogee DA-16 is a computer-based device, and as such contains and uses software in ROMs. This software, and all related documentation, including this Owners Manual, contain proprietary information which is protected by copyright laws. All rights are reserved. No part of the software and its related documentation may be copied, transferred, or modified. You may not modify, adapt, translate, lease, distribute, resell for profit or create derivative works based on the software and its related documentation or any part thereof without prior written consent from Apogee Electronics Corporation, U.S.A.

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Registration and Warranty Information
Be sure to register your AD-16, either by filling in the enclosed Registration Card or by completing the on-line registration form at our Web site: http://www.apogeedigital.com/register.html. If you do so, Apogee can contact you with any update information. As enhancements and upgrades are developed, you will be contacted at the registration address. Firmware updates are free for the first year of ownership unless otherwise stated. Please address any inquiries to your dealer or directly to Apogee at:
APOGEE ELECTRONICS CORPORATION, 3145 Donald Douglas Loop South, Santa Monica, CA 90405, USA. TEL: (310) 915-1000, FAX: (310) 391-6262 email: support@apogeedigital.com. Web: http://www.apogeedigital.com/ APOGEE ELECTRONICS CORPORATION warrants this product to be free of defects in material and manufacture under normal use for a period of 12 months. The term of this warranty begins on the date of sale to the purchaser. Units returned for warranty repair to Apogee or an authorized Apogee warranty repair facility will be repaired or replaced at the manufacturers option, free of charge. All units returned to Apogee or an authorized Apogee repair facility must be prepaid, insured and properly packaged. Apogee reserves the right to change or improve design at any time without prior notice. Design changes are not implemented retrospectively, and the incorporation of design changes into future units does not imply the availability of an upgrade to existing units. This warranty is void if Apogee determines, in its sole business judgment, the defect to be the result of abuse, neglect, alteration or attempted repair by unauthorized personnel. The warranties set forth above are in lieu of all other warranties, expressed or implied, and Apogee specifically disclaims any and all implied warranty of merchantability or of fitness for a particular purpose. The buyer acknowledges and agrees that in no event shall the company be held liable for any special, indirect, incidental or consequential damages, or for injury, loss or damage sustained by any person or property, that may result from this product failing to operate correctly at any time. USA: Some states do not allow for the exclusion or limitation of implied warranties or liability for incidental or consequential damage, so the above exclusion may not apply to you. This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

Service Information

If the AD-16 is kept in a clean environment free of excess dust, moisture and heat, it will give years of trouble-free service. The AD-16 contains no user-serviceable components: refer to qualified service personnel for repair or upgrade. Your warranty will be voided if you tamper with the internal components. If you have any questions with regard to the above, please contact Apogee. In the event your AD-16 needs to be upgraded or repaired, it is necessary to contact Apogee prior to shipping, and a Return Materials Authorization (RMA) number will be assigned. This number will serve as a reference for you and helps facilitate and expedite the return process. Apogee requires that shipments be pre-paid and insured unless otherwise authorized in advance. IMPORTANT: Any shipment that is not pre-paid or is sent without an RMA number will not be accepted.

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Declarations of Conformity
Declaration of ConformityFCC

Apogee AD-16

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits of a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful inteference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: 1. Re-orient or relocate the receiving antenna. 2. Increase the separation between the equipment and receiver. 3. Connect the equipment into an outlet on a different circuit from that to which the receiver is connected. 4. Consult the dealer or an experienced radio/TV technician for help. NOTE: The use of non-shielded cable with this equipment is prohibited. CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for compliance could void the users authority to operate the equipment. Apogee Electronics Corporation, 3145 Donald Douglas Loop South, Santa Monica, CA 90405. Betty Bennett, CEO.

Industry Canada Notice

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numrique de la classe B respecte toutes les exigences du Rglement sur le matrial brouilleur du Canada.
Declaration of Conformity CE
Apogee Electronics Corporation hereby declares that the product, the AD-16, to which this declaration relates, is in material conformity with the following standards or other normative documents: EN50081-1/EN55022; 1995 EN50082-1/IEC 801-2, 3, 4; 1992 following the provisions of: 73/23/EEC Low Voltage Directive 89/336/EEC EMC Directive
Declaration of Conformity Japan
Apogee Electronics Corporation hereby declares that the AD-16, to which this declaration relates, is in material conformity with the VCCI Class A standard.
Declaration of Conformity Australia
Apogee Electronics Corporation hereby declares that the AD-16 is in material conformity with AN/NZS standard requirements.

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Apogee AD-16 Users Guide CAUTION Any changes or modifications not expressly approved by APOGEE ELECTRONICS CORPORATION could void your authority to operate this equipment under the FCC rules.

OWNERS RECORD

The serial number is located on the rear panel of the unit. We suggest you record the serial number in the space provided below. Refer to it whenever you call an authorized Apogee Electronics repair facility or the manufacturer. Please be sure to return your completed warranty card immediately!
AD-16 Serial No. ________________
Purchase Date __________________
Factory Firmware Revision ________________ Dealer____________________________________________________ Phone ____________________________________________________
Address ___________________________________________________

Users Installation Notes

Space left blank for user tracking of factory modifications, option installations, software upgrades, manual revisions/ addenda, internal settings.

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About This Manual
This manual was written to help you to use this product to its fullest potential. Although the AD-16 is inherently simple to operate, it may contain features that may not be obvious from the front panel. Therefore, reading this manual is recommended to unlock the full value of this product. This manual was also written to prevent misuse of this product. Should you run into a problem when operating the AD-16, the solution is hopefully contained in the following pages. We expect that this manual will serve as the basis of your diagnosis of problems encountered and hope it will be used as such prior to any calls to technical support at Apogee. Remember before calling technical support at Apogee, you should register this product either by sending in the registration card or by registering on the Apogee Web site (http://www.apogeedigital.com). The technical support specialist will refer to the manual during your call and will expect that you have read it and understand the product to some degree. If you have any suggestions on how to improve this owners manual, please forward them to us at support@apogeedigital.com or fax them to +1-310-391-6262.

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Table of Contents
Warnings.....4 Registration & Warranty Information...5 Service Information....5 Declarations of Conformity....6 Owners record.....7 Users Installation Notes....8 About This Manual...8 The Manual Table of Contents....9 Introduction....11 Controls, Connections and Operation...11
Power Sample Rate/Sync Over Clear Resolution SoftLimit Channel 116 Level LEDs Channel 116 Over LEDs

The Rear Panel....12

DIP switches Word Clock In Word Clock Out ADAT Optical Outputs TDIF Connectors AES Digital Pinout....13 Analog Input Pinout Level Trim.....14

Application Notes....14

Tracking Mixing Mastering

Calibration....15

Procedure Restoring Default Values
Internal Adjustments....15

Voltage Selector Fuses

AD-16 Specifications...16
See the Apogee web site www.apogeedigital.com for additional technical notes and documentation.

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Introduction
Congratulations! You have just purchased a powerful and flexible multichannel analog-to-digital converter that renders an accurate soundstage and pristine audio quality in the tradition of Apogees award-winning converters. While the AD-16 is simple in operation, you should take a moment to read over this manual in order to get acquainted with the AD-16s features and operations. Designed for the latest hard-disk recording systems, the AD-16 offers 16 channels of Apogee conversion quality at an exceptionally affordable price, handling 24-bit A/D conversion at sample rates up to 96kHz. The balanced analog inputs can interface to a wide variety of input levels from 10dBv to +4dBu with additional adjustments for digital headroom levels. Apogees SoftLimit analog processing can be selected for either bank of eight channels as well as the renowned UV22HR word length reduction technology. The converters sync to internal clocks or to an external Word Clock through the use of Apogee low jitter clock technology. Digital outputs are ADAT lightpipe as standard and can be configured to output Sonorus S/MUX protocol for sample-splitting high-resolution signals into optical interfaces. AES/EBU or TDIF outputs are also available as an option.

The Front Panel

POWER On the left-hand side of the front-panel is the POWER button. Press once to power the unit on and press again to power off the unit. SAMPLE RATE/SYNC To the right of the power button is the Sample Rate/Sync button. This sets the sample rate (sampling frequency) for the digital and word clock outputs to 44.1, 48, 88.2 or 96kHz referenced to the internal clock, or allows the unit to be synchronized to an external word clock input. LED indicators to the right of the button indicate the current setting. OVER CLR This button, situated above the Sample Rate/Sync button, clears the sixteen channel over indicators when they are selected to infinite hold with the rear panel DIP switch. UV22HR Selects the digital word length (also referred to as bit rate or resolution) for the digital outputs. Note that the AD-16 always converts analog to digital at 24-bit resolution. To output a 16-bit or 20-bit signal, in 44.1 or 48kHz the UV22HR process can be applied by pressing the UV22HR button. This will cycle through the selection of channels 1-8, channels 9-16, or both, and then back to all channels off. 16 or 20-bit UV22HR is selected by rear panel DIP switch #1. In high density modes (88.2 or 96kHz sampling), UV22HR is not necessary. If you attempt to activate it, the UV22HR LEDs will remain dark and the 88.2 and 96kHz sample rate LEDs will flash. SOFTLIMIT The SoftLimit process can be applied by pressing the momentary SoftLimit button. Pressing the button repeatedly will cycle through the selection of channels 1-8, channels 9-16, or both, and then back to all channels off. Channel 1-16 Level LEDs During normal operation, the brightness of these green audio LEDs varies in proportion to the analog input signal level, to indicate the presence of audio (i.e., they illuminate brighter for louder incoming analog signals)

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Apogee AD-16 Users Guide Channel 1-16 OVER LEDs These LEDs will illuminate when a digital OVER is sensed at the digital output for the respective channel. These can be set to automatically clear after 2 seconds or infinite hold with rear panel DIP switch #2. The number of consecutive samples containing all ones that constitutes an Over is determined by the setting of DIP Switches 3 and 4. Pressing the OVER CLR button on the left side of the front panel will clear the OVER LEDs.

The Rear Panel

DIP Switches The rear panel DIP switches allow a number of system parameters to be set. The switches operate as follows: DIP Switch 3,6 7, 8 Function UV22HR word length Over infinite hold Consecutive Over setting see below Word Clock output at 88.2/96 Sample Freq (fs) locked to ext WC Currently unused ON (UP) 20-bit ON half sample rate fs = 2x WC In freq OFF (DOWN) 16-bit OFF sample rate fs = WC In freq
DIP switches number 3 and 4 work together to determine the number of consecutive full scale samples (0dBFS) required to illuminate the over LEDs (the default setting is both DIPs to DOWN). SW 3 SW 4 Threshold UP UP 1 UP DOWN 2 DOWN UP 3 DOWN DOWN 4 WC IN/OUT The BNC Word Clock IN connector accepts standard Word Clock signals, allowing the AD-16 to be synchronized to an external source when the front panel SAMPLE RATE/SYNC button is set to WC/EXT. DIP Switch 6 allows the AD-16s sample rate to be the same as or twice the rate of the Word Clock input. The WC OUT BNC connector outputs standard Word Clock signals at a sample rate determined by the SAMPLE RATE/SYNC button on the front panel. To accommodate systems that require it, DIP Switch 5 can be used to set this output to the current sample rate or at half the sample rate, when the system sample rate is 88.2 or 96 kHz. See above. ADAT Optical Outputs The ADAT outputs support 16 channels at either 44.1/48 kHz via two transmitter outputs, or 88.2/96 kHz via all four transmitter outputs using the S/MUX protocol. S/MUX is essentially double-wide mode for ADAT, where a pair of channels at (for example) 48 kHz will carry one 96 kHz signal. A single 8-channel input then becomes 4 channels in S/MUX mode. When looking at the rear panel, the following illustrates the connection scheme for either mode. Each box represents one of the four connectors. ADAT Normal Mode S/MUX Mode Channels 1-8 Channels 1-4 Channels 1-8 Channels 5-8 Channels 9-16 Channels 9-16 Channels 9-12 Channels 13-16
TDIF Connectors The two TDIF DB25 I/O connectors use only the output half of a standard TDIF cable. Each cable carries eight channels of audio per bank.

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Apogee AD-16 Users Guide AES Digital Pinout

AES I/O MALE DB25 13

1/2- (F) 3/4- (F) 5/6- (F) 7/8- (F) 1/2- (M) 3/4- (M) 5/6- (M) 7/8- (M) GND OPEN GND GND 1/2+ (F) 3/4+ (F) 5/6+ (F) 7/8+ (F) 1/2+ (M) 3/4+ (M) 5/6+ (M) 7/8+ (M) OPEN GND OPEN GND GND

The AES output is delivered through a single, female DB25 connector. The pinout is similar to the Yamaha DB25 specification, except that all channel pairs are configured as outputs. The pinout is as follows: Pin Function 1 Channels 1/2 (Hot) 2 Channels 3/4 (Hot) 3 Channels 5/6 (Hot) 4 Channels 7/8 (Hot) 5 Channels 9/10 (Hot) 6 Channels 11/12 (Hot) 7 Channels 13/14 (Hot) 8 Channels 15/16 (Hot) No Connection: 9, 11, and Pin Function 14 Channels 1/2 (Cold) 15 Channels 3/4 (Cold) 16 Channels 5/6 (Cold) 17 Channels 7/8 (Cold) 18 Channels 9/10 (Cold) 19 Channels 11/12 (Cold) 20 Channels 13/14 (Cold) 21 Channels 15/16 (Cold) 23. Ground: 10, 12, 13, 22, 24, 25
Analog Input Pinout The pinout for the analog input connectors follows the configuration utilized by Tascam for their DA-88 and other products, thus allowing a standard connection cable to be used. Be sure to specify the INPUT version (with XLR female connectors on the ends). Alternatively, you can use the pinout diagram below to construct your own. The pinout is as follows: Function +Pin (Hot) Pin (Cold) Channel 1/12 Channel 2/23 Channel 3/9 Channel 4/20 Channel 5/6 Channel 6/17 Channel 7/3 Channel 8/14 Ground: 2, 5, 8, 11, 16, 19, 22, 25 Also see diagram below:
Pin-out for TASCAM DBChannel Balanced Connector
G C H G C H G C H G C H G C H G C H G C H G C H
H = HOT C = COLD G = GROUND

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Apogee AD-16 Users Guide Level Trim These multiturn trimmers adjust the level sensitivity of the individual A/D sections. As discussed in the METERS description, digital and analog scales are different. The level trim posts allow you to set the AD-16 to an operating level that is convenient for your particular application.

Application Notes

Tracking
Because of the unpredictable dynamic range of live performance, its often desirable to have plenty of headroom to capture a performance without risking overs. In this case, you may want to set the AD-16 levels to 20 or 18dBfs. The SOFT LIMIT function will also prove to be a useful feature in live recording.

Mixing

Levels are usually more controlled during a mix. In this case, the AD-16 levels can be adjusted to 16 or 12dBfs to lay down the final mix.

Mastering

In the mastering stage, its often desirable to get the hottest signal on to tape. Hot transients are usually better controlled at this stage. The convert does not need as much headroom, so it can be set to 12dBfs. The chart below shows the relationship between dBu and dBFS for the purposes of setting the levels on the AD-16.

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AD-16 Specifications

Inputs: Outputs: 16 analog inputs, balanced Word Clock Four TosLink interfaces delivering 2 x 8 channels in ADAT mode and 4 x 4 for S/MUX. Optional AES/EBU & TDIF cards Word Clock 24-bit 44.1, 48, 88.2, 96 kHz 10% 105 dB @ 1kHz, 0.5 dBFS output 117 dB A-weighted 0.001 dB 110 dB 120 dB 10 Hz20 kHz, 0.025 dB 24 dBu, 18 dBu and 4 dBV <22 pSec (ext WC input) Lock and sample rate indicators. Signal present and over indicators per channel. Internal clock (four sample rates) and External (word clock) input. Soft Limit and UV22HR buttons. Power switch & indicator. Rear panel reference level multiturn trimpots (one per channel). 1 IEC power connector chassis male 4 Toslink optical transmitters for ADAT-S/MUX output 2 BNC for Word Clock input & output 2 DB25-B for analog input, Tascam standard pinout Option cards: 1 DB25-B for AES/EBU, 2 DB25-B for TDIF digital outputs 1U (1.75 in) high, 19 in rack-mount Switch-mode 100240 Volt AC 5060 Hz (Universal) ~25W Page 16
Resolution: Sample Rates: Relative THD+N (S/(N+D): Dynamic Range, 60 dB: Passband Ripple: Stopband Attenuation: Interchannel Crosstalk: Frequency Response: Input Levels, maximum: Clock Jitter: Functionality:

Connectors:

Case: Power Supply: Input Voltage Range: Power consumption:
Please register your Apogee products!
You need to be registered to qualify for Technical Support. Please be sure to register all the Apogee products you own. You can register either with the registration card provided in this package, or on-line at:
http://www.apogeedigital.com/register.html

Thanks for your support!

Please read the manual!
This Apogee product is quite easy to use. However, there may be features and settings that are not evident from the front panel. Please be sure to read the manual thoroughly! If you contact Technical Support, they will assume that you have read the manual and have a basic operational knowledge of the product.

16-channel 24 bit, 192 kHz, A/D Converter Users Guide

v2.0 - January 2005

16-channel 24 bit, 192 kHz, A/D Converter

Users Guide

AD-16X Users Guide

APOGEE ELECTRONICS

Warnings

FCC warning

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when operated in a commercial environment. 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 take whatever measures necessary to correct the interference at his own expense.

Copyright Notice

The Apogee AD-16X is a computer-based device, and as such contains and uses software in ROMs. This software, and all related documentation, including this Users Guide contain proprietary information which is protected by copyright laws. All rights are reserved. No part of the software and its related documentation may be copied, transferred, or modied. You may not modify, adapt, translate, lease, distribute, resell for prot or create derivative works based on the software and its related documentation or any part thereof without prior written consent from Apogee Electronics Corporation, U.S.A.
Registration and Warranty Information
Be sure to register your AD-16X, either by lling in the enclosed Registration Card or by completing the on-line registration form at our Web site: http://www.apogeedigital.com/support/. If you do so, Apogee can contact you with any update information. As enhancements and upgrades are developed, you will be contacted at the registration address. Firmware updates are free for the rst year of ownership unless otherwise stated. Please address any inquiries to your dealer or directly to Apogee at: APOGEE ELECTRONICS CORPORATION, 3145 Donald Douglas Loop South, Santa Monica, CA 90405, USA. TEL: (310) 915-1000, FAX: (310) 391-6262 email: support@apogeedigital.com. Web: http://www.apogeedigital.com/ APOGEE ELECTRONICS CORPORATION warrants this product to be free of defects in material and manufacture under normal use for a period of 12 months. The term of this warranty begins on the date of sale to the purchaser. Units returned for warranty repair to Apogee or an authorized Apogee warranty repair facility will be repaired or replaced at the manufacturers option, free of charge. ALL UNITS RETURNED TO APOGEE OR AN AUTHORIZED APOGEE REPAIR FACILITY MUST BE PREPAID, INSURED AND PROPERLY PACKAGED, PREFERABLY IN THEIR ORIGINAL BOX. Apogee reserves the right to change or improve design at any time without prior notication. Design changes are not implemented retroactively, and the incorporation of design changes into future units does not imply the availability of an upgrade to existing units. This warranty is void if Apogee determines, in its sole business judgment, the defect to be the result of abuse, neglect, alteration or attempted repair by unauthorized personnel. The warranties set forth above are in lieu of all other warranties, expressed or implied, and Apogee specically disclaims any and all implied warranty of merchantability or of tness for a particular purpose. The buyer acknowledges and agrees that in no event shall the company be held liable for any special, indirect, incidental or consequential damages, or for injury, loss or damage sustained by any person or property, that may result from this product failing to operate correctly at any time. USA: Some states do not allow for the exclusion or limitation of implied warranties or liability for incidental or consequential damage, so the above exclusion may not apply to you. This warranty gives you specic legal rights, and you may have other rights which vary from state to state.

Service Information

The AD-16X contains no user-serviceable components: refer to qualied service personnel for repair or upgrade. Your warranty will be voided if you tamper with the internal components. If you have any questions with regard to the above, please contact Apogee. In the event your AD-16X needs to be upgraded or repaired, it is necessary to contact Apogee prior to shipping, and a Return Materials Authorization (RMA) number will be assigned. This number will serve as a reference for you and helps facilitate and expedite the return process. Apogee requires that shipments be pre-paid and insured unless otherwise authorized in advance. IMPORTANT: ANY SHIPMENT THAT IS NOT PRE-PAID OR IS SENT WITHOUT AN RMA NUMBER WILL NOT BE ACCEPTED.

Declarations of Conformity
Declaration of ConformityFCC Apogee AD-16X
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference (2) This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits of a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful inteference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: 1. Re-orient or relocate the receiving antenna. 2. Increase the separation between the equipment and receiver. 3. Connect the equipment into an outlet on a different circuit from that to which the receiver is connected. 4. Consult the dealer or an experienced radio/TV technician for help. NOTE: The use of non-shielded cable with this equipment is prohibited. CAUTION: Changes or modications not expressly approved by the manufacturer responsible for compliance could void the users authority to operate the equipment. Apogee Electronics Corporation, 3145 Donald Douglas Loop South, Santa Monica, CA 90405. Betty Bennett, CEO.

Industry Canada Notice

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numrique de la classe B respecte toutes les exigences du Rglement sur le matrial brouilleur du Canada.
Declaration of Conformity CE
Apogee Electronics Corporation hereby declares that the product, the AD-16X, to which this declaration relates, is in material conformity with the following standards or other normative documents: EN50081-1/EN55022; 1995 EN50082-1/IEC 801-2, 3, 4; 1992 following the provisions of: 73/23/EEC Low Voltage Directive 89/336/EEC EMC Directive

Declaration of Conformity Japan
Apogee Electronics Corporation hereby declares that the AD-16X, to which this declaration relates, is in material conformity with the VCCI Class A standard.
Declaration of Conformity Australia
Apogee Electronics Corporation hereby declares that the AD-16X is in material conformity with AN/NZS standard requirements.

OWNERS RECORD

The serial number is located on the rear panel of the unit. We suggest you record the serial number in the space provided below. Refer to it whenever you call an authorized Apogee Electronics repair facility or the manufacturer. Please be sure to return your completed warranty card immediately!
AD-16X Serial No._______________________________________________________ Purchase Date__________________________________________________________ Dealer_________________________________________________________________ Phone_________________________________________________________________ Address________________________________________________________________

CAUTION:

Any changes or modications not expressly approved by APOGEE ELECTRONICS CORPORATION could void your authority to operate this equipment under the FCC rules.
Please register this unit by lling in the included registration card, or registering online at http://www.apogeedigital.com/support/register.php Please read this manual if you call for technical support, well assume that you have. There will be a quiz.

Table of Contents

Introduction....2 Signal Flow Diagram....2 Getting Started Quickly....3 Installation....3 Connecting Power...3 Reset....3 QuickStart....3 Signal Flow....3 Navigating the Front Panel...4-7 Power Switch....4 Setup buttons....4 Primary Parameter Loop...4 CLOCK SOURCE....5 SAMPLE RATE....5 WC Ratio....5 Lock indication....5 CAL mode indicator...6 UV22HR.....6 SoftLimit.....7 AES format....7 CLEAR....7 Level Meters....7 Standard and Advanced Option Routing..8-10 Overview....8 Advanced Option Routing Example: Additional Digital I/O..9 Advanced Option Routing Example: Expanded Interface Choices..10 Connections on the Rear Panel...11 OUT 1-8....11 OUT 9-16....11 OPTION....11 ADAT S/MUX....11 AES IN....11 WC IN....11 WC OUT....11 WC IN Termination Switch...11 Internal Adjustments...12-13 MIDI Firmware update connector...12 Power switch calibration....13

Introduction

The AD-16X, Apogees latest and most advanced analog to digital converter, takes the legendary quality of Apogee a signicant step forward. Features such as a redesigned power supply, standard 192kHz sampling rates, the C777 clocking technology found in Big Ben, and optional Pro Tools HD and FireWire expansion cards, make the AD-16X the most powerful and exible A-to-D converter ever. Advanced High-Denition Conversion With up to 192k standard sample rates, the AD-16X combines Apogees legendary conversion quality with the very latest in high-denition digital to provide unrivaled exibility and quality. C777 Clocking used by Big Ben The AD-16X uses Apogees C777 clocking technology. Famous for keeping Big Ben on time, the C777 utilizes an entirely digital process that Apogee has developed with the most advanced Direct Digital Synthesis (DDS) technology and DSP-based digital ltering. With a stable, crystal based digital PLL handling the clocking, the AD-16X is able to intelligently manipulate incoming signals and adapt to them accordingly, resulting in unprecedented jitter attenuation and an astonishing and noticeable difference in sound quality. Advanced Option Routing With version 2 rmware, both digital inputs and analog outputs may be routed in conjunction with an installed X-Option card. Please see page 7 for details. Universal Connectivity With its wide array of standard and optional digital outputs, the AD-16X can be connected to virtually any digital system. The AD-16X includes AES and ADAT Optical digital outputs as standard, while either the X-HD or X-FireWire cards may be installed for connectivity to Pro Tools HD or any FireWire equipped computer. SoftLimit Soft Limit is an analog peak limiter that instantaneously and gracefully controls transient peaks, thereby allowing an additional 4-6 dB of headroom. Short of purchasing a very expensive stand-alone compressor/limiter, there is currently no product on the market that handles this process better than SoftLimit. UV22HR UV22HR is Apogees industry standard technology for reducing the word-length of a high-resolution digital signal to 16 bits. UV22HR is also being employed to produce dramatically improved internet and computer audio content without increased le sizes or data rates. It is estimated that 8 out of 10 hit records are mastered using Apogees UV22HR technology.

Getting Started Quickly

USING THIS MANUAL In this manual, parameters are dened as the characteristics of operation, such as CLOCK SOURCE or AES format, and are capitalized in this manner : CLOCK SOURCE. Values are dened as the choices available for each parameter for example, the parameter CLOCK SOURCE has the values INTernal,WC and INPUT Values are italicized in this manner: S/PDIF. Settings are dened as the entire set of parameters and values. When physical controls such as buttons or switches are referred to in the text, they are highlighted in this manner: DOWN.

INSTALLATION

Please ensure that the AD-16X is installed in a adequately ventilated location. It is recommended that a 1U space be left between units if installed in a 19 electronics rack

CONNECTING POWER

The AD-16X accepts an AC input of 100 to 240v AC at a frequency of 50 to 60 Hz. Thus, the unit may be connected to virtually any AC power outlet found worldwide without concern for voltage settings or fuse ratings.
To reset the AD-16X, power up the unit while pressing the DOWN button. This provides a quick method to return to factory default settings when exploring the units functionality and capabilities. When reset, the conversion level is set so a +4 dBu analog input results in a 16 dBFs digital output.

QUICKSTART

1) 2) 3) 4) 5) 6) 7)
Follow these simple steps to get started quickly: Connect an AC input and the desired analog inputs and digital outputs to the AD-16Xs rear panel. Reset the AD-16X by powering up the unit while pressing the DOWN button. Once the AD-16X has booted up, the CLOCK SOURCE will default to INTernal and the SAMPLE RATE will default to 44.1kHz. If lock to an external word clock is desired, press the DOWN button until the WC lights. To change to another sample rate (if CLOCK SOURCE is set to INTernal), press the NEXT button until the Sample Rate Display ashes, then press either the UP or DOWN buttons to select the desired sample rate. In the clock window, verify that the desired sample rate is indicated and theLock Exclamation Point is lit. If an X-Option card is installed, the AD-16X may be set in an Advanced Option routing conguration; please see page 9 for details. Signals present at the analog inputs will now be converted to digital and routed to the corresponding channels of ALL the digital outputs.

SIGNAL PATH

AES OUT
Analog Inputs Cal Level Soft Limit A to D Conversion UV22

OPTICAL OUT OPTION OUT

Navigating the Front Panel
Power Switch - The POWER switch may be congured to operate in the manner best suited to the installation of the unit; for example, if the AD-16X is installed in a rack with a Master power switch, the unit may be congured to power on when the Master switch is turned on. Please see the section of this manual entitled Internal Adjustments for details. Note that the POWER switch LED indicates that the AD-16X is receiving a proper AC input, and is in Standby. The LED goes out when the AD-16X is powered on.

Setup buttons and LED - These buttons are used to modify all settings on the AD-16X. In general, setting modication is accomplished by : a) enabling Setup mode by pressing any of the 4 buttons (the Setup LED will light and one parameter value will ash); b) using the PREV or NEXT buttons to scroll to the parameter to be modied; c) using the UP or DOWN buttons to select the desired parameter value.

PRIMARY PARAMETER LOOP

Clock Source

Sample PN Rate

WC Ratio

Soft Limit

AES Format

Global CAL

UV22 CHANNEL SELECT MODE
Press and hold PREV or NEXT

CH 1-2

CH 3-4

CH 5-6

CH 15-16
SOFT LIMIT CHANNEL SELECT MODE

CHANNEL CAL MODE

P N NEXT

Figure 1

Navigating the Front Panel 3

continued

After Setup mode is enabled, pressing the PREV or NEXT button will cycle through the AD-16Xs seven parameters - CLOCK SOURCE, SAMPLE RATE, WC ratio, UV22HR, SOFT LIMIT, AES format and CAL mode- and then return to the rst parameter. Likewise, pressing the UP or DOWN buttons will cycle through the values available for the selected parameter. Once a value is selected, it immediately becomes active, regardless if the LED is ashing to indicate that Setup mode has been enabled. If either the UV22HR, SOFT LIMIT or CAL mode parameters has been selected, pressing and holding either the PREV or NEXT button will allow the user to enter a corresponding Channel mode; its now possible to cycle through channels 1-16 in order to make settings to individual channels. Please see page 6 for more details concerning CAL modes. Figure 1 depicts the parameter cycles of the AD-16X. Parameters 3-7 are displayed in the Clock Window, as indicated at the top of this page. 3) 4) CLOCK SOURCE This parameter determines the clock source of the AD-16X, and may be set to INTernal crystal or WC input. SAMPLE RATE - When the CLOCK SOURCE is set to INTernal , the Sample Rate display indicates the frequency of the internally generated clock, and may be set to any standard sample rates from 44.1 to 192 kHz. When the CLOCK SOURCE is set to WC, the display indicates the sample rate of the AD-16X as a result of locking to the selected source; the sample rate cannot be set by the user. WC Ratio This parameter deterWord Clock I/O Frequency mines the ratio between the word clock Input/Output frequency and the units 44.1kHz 48kHz 88.2kHz 96kHz sample rate. Figure 2 indicates the WC x1: 44.1kHz 48kHz 88.2kHz 96kHz resultant AD-16X sample rate given a WC Ratio specic WC Frequency Ratio setting Setting WC /2: 88.2kHz 96kHz 176.4kHz 192kHz and word clock input frequency. LikeWC/4: 176.4kHz 192kHz wise, the word clock output frequency may be determined given a specic Resultant AD-16X Sample Rate WC Ratio setting and AD-16X sample rate. This parameter should be used Figure 2 to adjust the AD-16X word clock I/O to accommodate the requirements of specic digital systems. For example, to congure the AD-16X to lock to a 48kHz word clock input and run at a sample rate of 192kHz, set WC Ratio to WC fs/4. Lock indication These LEDs indicate the Lock status of the AD-16Xs C777 clock. Two levels of lock precision are displayed, Wide and Narrow. When the Narrow LED and Lock Exclamation Point are lit, the AD-16X has locked to the selected CLOCK SOURCE in such a way to ensure the highest quality A-to-D conversion. If the Wide LED or only the upper section of the Lock Exclamation Point lights, the stability of the clock source is questionable, and should be veried. Thanks to SureLock, Apogees intelligent clock continuity algorithm, the AD-16X will output a stable clock signal even if the selected CLOCK SOURCE is interrupted. When SureLock is engaged, the arrow section of the Lock exclamation point ashes to indicate a loss of the clock source, while the Narrow LED and blue point light solidly to indicate a stable clock output.

176.4kHz 176.4kHz

192kHz 192kHz

Lock Exclamation Point

Navigating the Front Panel 8
CAL mode indicator This LED indicates that either Global or Channel CALibration mode is enabled, and that the analog to digital conversion level may be calibrated. Global CAL allows the calibration of all 16 channels simultaneously, while Channel CAL allows calibration of individual channels. Global CAL mode is enabled by scrolling through the 7 front panel parameters until the CAL LED ashes; global Cal will scroll across the Sample Rate display, followed by the digital output level of channel 1. Once enabled, all 16 analog input levels may be adjusted simultaineously by one of three operations: Press and Hold UP to raise the analog input level and DOWN to lower the level. Press and release UP or DOWN to modify the analog inputs +-.01 dB; Quickly tap UP or DOWN twice (think of a double mouse click) to modify the analog inputs +- 1.0 dB. This double press function may be used to quickly jump from a house reference level to another reference level in precise 1 dB steps.
Channel CAL mode is enabled by scrolling through the 7 front panel parameters until the CAL LED ashes, then pressing and holding either the PREV or NEXT buttons until ch 1 scrolls across the Sample Rate display. Keeping in mind that Setup mode is always enabled while in Channel CAL mode, channel 1s analog output may be modied by the same operations described on the previous page. To adjust channels 2-16, press either the PREV or NEXT button until the LED corresponding to the channel to be modied is lit.
Saving calibration settings
To exit Channel CAL mode, press and hold either PREV or NEXT again. Keep in mind that values entered while in either Global or Channel calibration mode wont be saved in non-volatile memory until Channel CAL mode is exited and the Setup mode LED goes out. When either Global or Channel CAL modes are enabled, the Sample Rate Display operates as a digital level meter with a range of -24 to 0 dBFs; if the level is below -24dBFs (or there is no analog input present), the Display will read ----. In Global CAL mode the level of Channel 1 is indicated; when in Channel CAL mode the level of the selected channel is indicated. Individual channel level changes made in Channel Cal mode are preserved when modifying all channel levels in Global Cal mode. To quickly calibrate the AD-16X, reset the unit (by pressing DOWN while powering on) and connect a 1 kHz tone at the desired analog reference level (usually +4 dBu) to channel 1. Enable Global CAL and press UP or DOWN to modify the level indicated by the Sample Rate Display to the desired digital reference (usually between -20 to -12 dBFs). Keep in mind that digital levels are expressed as a minus reading below 0 dBFs; thus a change from -16 dBFs to -14 dBFs is an increase of the coversion level.This procedure calibrates ALL channels to approximately the same conversion level. To rene the calibration of each channel, press and hold either PREV or NEXT to enter Channel CAL mode, connect a 1kHz tone to the channel to be modied, select that channel using PREV or NEXT (the selection is indicated by the red ashing LED) and press UP or DOWN to attain the desired digital level. 8) UV22HR This LED indicates the status of UV22HR processing, which reduces bit resolution from 24 to 16 bits when applied to the converted digital signal. When the UV22HR LED is illuminated, UV22HR processing is engaged on channel pairs selected in UV22HR Channel Select Mode. To enable this mode, press and hold either PREV or NEXT (while the UV22HR LED is ashing). To select channel pairs, press PREV or NEXT until the red OVER LEDs of the desired pair are lit, and press UP or DOWN to select the pair, as indicated by the illumination of the corresponding green LEDs. UV22HR may only be engaged when the SAMPLE RATE is set to 44.1 or 48kHz

Navigating the Front Panel 9
SOFT LIMIT - This LED indicates the status of Soft Limit, Apogees analog transient peak reduction circuitry. When the Soft LIMIT LED is illuminated, SOFT LIMIT is engaged on channels selected in SOFT LIMIT Channel Select Mode. To enable this mode, press and hold either PREV or NEXT (while the SOFT LIMIT LED is ashing). To select channels, press PREV or NEXT until the red OVER LED of the desired channel is lit, and press UP or DOWN to select the channel, as indicated by the illumination of the corresponding green LED. Soft Limit is an analog process that instantaneously rounds transient peaks; for all intents and purposes attack and release times may be considered as instantaneous. As with any peak reduction device working at such fast time constants, Soft Limit is most effective with signals whose peak information is much greater than its average (or RMS) information, such as drums, percussion and plucked instruments. Soft Limit may not be the appropriate choice for limiting signals whose crest factor (peak to RMS ratio) is low, such as bass or organ.
10) AES format - The format of the AES inputs may be set to SINGLE or DOUBLE wire, to accommodate the AES format of connected devices. If the CLOCK SOURCE is either INTernal or WC and the sample rate is 44.1- 48kHz, only the SINGLE value is available; in all other cases both values may be selected. 11) CLEAR Pressing this button clears OVERs (displayed by the red LEDs). Pressing and holding this button toggles the AD-16X between two OVER LED Hold modes - One Second Clear and Autoclear. One Second Clear (CLEAR LED off) - OVERs are held for one second and then automatically cleared. If youre really impatient, you can clear them manually. Autoclear - (CLEAR LED on) - Autoclear acts like an alert assistant, clearing OVERs between takes. When an OVER occurs, it is held until 1) the level on the corresponding channel drops below -50 dBFs for at least 5 seconds and 2) a new signal over -50 dBFs is input. Now, OVERs will be held throughout the duration of a take, and cleared when the next take begins. 12) Level Meters Much more than mere signal presence indicators, these green LEDs display digital output level from 36 to 0 dBFs according to their brightness. OVER Indicators - The red LEDs indicate that 3 consecutive overs have occurred in the conversion process.

Standard and Advanced Option Routing
When an X-Option card is installed, the AD-16X may be set to one of two output congurations, Standard Routing and Advanced Option Routing. When Standard routing is enabled, only one signal path is present analog inputs routed simultaneously to all digital outputs. When Advanced Option routing is enabled, two signal paths are present 1) analog input to XOption card outputs; 2) X-Option card inputs simultaneously to ADAT and AES outputs.

AD-16X: Standard Routing

AES Device

AD-16X

Analog In
Cal Level Soft Limit A to D & Meters UV22

Optical

Optical Device

Option In

X-FireWire or X-HD option card

Computer

Option Out
AD-16X: Advanced Option Routing
Please see pages 9 & 10 for Advanced Option Routing examples Switching the AD-16X between Routing modes may only be accomplished when powering on the unit. To toggle between Standard and Advanced Option routing modes, press and hold the UP button while powering on the unit; when Standard routing is enabled, Apogee AD-16X scrolls across the Sample Rate Display; when Advanced Option routing is enabled, Apogee AD-16X 2.0 scrolls across the Sample Rate Display
IMPORTANT NOTES CONCERNING ADVANDED OPTION ROUTING MODE
Advanced Option routing will modify the manner in which an X-HD equipped AD-16X is detected in Pro Tools, reecting the additional available outputs. Please see the X-HD manual for details.
Standard and Advanced Option Routing Analog Out
Advanced Option Routing Additional Digital I/O
With Advanced Option routing, the AD and DA-16X offers additional digital I/O to Digidesign HD or Firewire-based audio systems. As depicted in the routing diagram at left, when an X-HD card is installed in both an AD and DA-16X, it becomes possible to route the DA-16Xs AES or ADAT inputs to a Pro Tools session while routing the AD-16Xs AES and ADAT outputs from the session. The AD-16X functions as a Digidesign 192 with 16 analog inputs and 16 digital outputs while the DA-16X functions as a 192 with 16 digital inputs and 16 analog outputs. Of course, the same functionality is possible with X-Firewire cards and a Firewirebased audio system.

DA-16X: Advanced Option Routing

(input select)

DA-16X

Cal Level

D to A & Meters

X-HD option card

A to D & Meters
Computer X-HD option card with Pro Tools HD
Advanced Option Routing Expanded Interface Choices
When an X-Option card is installed in an AD-16X, Advanced Option routing offers the possibility to connect a second interface using the AD-16Xs digital I/O. As depicted in the routing diagram at right, the AD-16Xs analog inputs are routed to the Firewire audio device while the AD-16Xs digital outputs are routed from the Firewire device. These digital outputs may be connected to a DA-16X or a MiniDAC to provide analog output. In short, only one X-Option card is needed to connect an AD-16X and a D-to-A.

DA-16X: Standard Routing

X-FireWire option card

with FireWire 400/800

Connections on the Rear Panel
1) IN 1-8 - This DB-25 connection accepts analog inputs 1-8; analog inputs are balanced line level signals at a nominal level adjustable between +4 dBu = -22 dBFs and -10 dBV = -10 dBFs. Apogees AD8-IFC breakout cables can connect here to provide 8 XLR female connecters. (pinout Figure 3). 2) IN 9-16 - This DB-25 connection accepts analog inputs 9-16. Apogees AD8-IFC breakout cables can connect here to provide 8 XLR female connecters. (pinout Figure 3). 3) OPTION - This slot is reserved for Apogees X-Series Option cards, which provide additional digital output formats, such as FireWire or Digidesign HD. 4) ADAT S/MUX These Toslink connections provide ADAT or S/MUX format optical outputs; the format employed is based on the AD-16X sample rate as indicated in Figure 4: also indicated are the connections used for each format. 5) AES OUT This DB-25 connector provides 16 channels of AES-EBU Single wire output and 8 channels of Double wire output (pinout Figure 5). Apogees AES16-OP-IFC breakout cable can connect here to provide 8 XLR male connectors. 6) WC IN - This BNC connection accepts a TTL Logic clock signal. Termination of the word clock input may be engaged with an internal switch; please see Internal Adjustments. 7) WC OUT - This BNC connection provides a TTL Logic clock signal output.
Pinout Diagram for Analog IN 1-8 and 9-16

Figure 3

Rear Panel Optical Connectors

44.1-48k ADAT:

2 9-16 5-8 3-4

3 1-8 9-12 5-6

4 9-16 13-16 7-8

Figure 4

1-8 1-4 1-2

Optical Format

88.2-96k S/MUX 2: 176.4-192k S/MUX 4:
Pinout Diagram for AES OUT 1-16

Figure 5

8) WC IN Termination Switch - When this switch is pressed IN, a 75 ohm load is engaged across the word clock input; when the switch is OUT, the word clock input is unterminated (Figure 6). 9) AC - This IES connection accepts an AC input of 100 to 240 VAC at a frequency of 50 to 60 Hz.
WORD CLOCK IN, Termination Switch
Terminated switch position Unterminated switch position

Figure 6

Internal Adjustments
MIDI FIRMWARE UPDATE CONNECTOR
To allow the greatest exibility in the eld, Apogee now employs a rmware update method using stardard Midi protocol. Youll need the following items to update the rmware of your Apogee device: ApogeeUpdater program, available from Apogees website New rmware le, also available from our website Macintosh OSX 10.2 or higher or Windows XP computer USB Midi interface, compatible with OS used. Please note that Midi interfaces with proprietary latency-reducing modes do not properly transmit System Exclusive data such as this rmware update. Ensure that such modes are turned off before attempting to update rmware. USB Midi Interfaces such as the Edirol PC-300, where proprietary modes may not be turned off, are not compatible with this rmware update method.

5) 6) 7) 8) 9)

To determine the version of rmware installed in the AD-16X, press the PREV button while powering on the unit. Install both the ApogeeUpdater and the new rmware le onto a computer equipped with a USB Midi Interface. Its assumed that all drivers MIDI updater necessary for the proper test and operation of the Midi Interface have been installed. Connect the AD-16Xs Midi Update Connector to an output of the Midi Interface. On the AD-16X, simultaneously press the PREV and NEXT buttons while powering up the Apogee device; once the device has booted, release the PREV and NEXT buttons. When the signal level LEDs begin to dance, the unit is ready to receive data. Open the ApogeeUpdater application, and click on OPEN FILE. In the Navigation window which appears, navigate to the new rmware le, select it, and click on OPEN. Click on DOWNLOAD TO UNIT. The complete update process takes 8 minutes; after about 1 minute, data transfer should begin and the percentage completed displayed on the ApogeeUpdater panel should correspond to the percentage displayed on the AD-16X front panel. Once the download has reached 100%, wait for the unit to re-boot and the front panel to return to a normal operating state. Before proceeding, reset the unit by pressing DOWN while powering up the unit.

Internal Adjustments POWER SWITCH SETTINGS

JUMPER P13

(as seen from front)

DESCRIPTION

When AC power is applied to the input, the unit does not power up immediately; to power on the unit,the POWER button must be pressed. When AC power is applied to the input, AD-16X powers on immediately; nevertheless, the POWER switch is functional.

P13 Jumper

Features and Specications
16 channels of premium 24-bit AD conversion Sample rates up to 192k 16 channels of AES, ADAT/SMUX Output Word Clock I/O Optional HD card for direct connection to ProTools HD Optional S800 FireWire card capable of sample rates up to 192k, compatible with OS X/Widows XP and all popular DAWs All option cards (X-FireWire and X-HD) facilitate connection of multiple units Soft Limit for maximum digital level without overs (can be applied to a single channel or all channels) UV22HR for superior dither of high resolution audio to 16-bit (can be applied to a channel pair or all channels) Direct Digital Synthesis (DDS) using Big Bens C777 Clock Technology up to 192kHz Adaptive Loop Filtering (ALF) for optimum clock performance and minimum jitter Support for AES double wire and SMUX formats Post A/D conversion level monitoring Intuitive front panel calibration Word Clock termination switch
INPUTS Analog in 1-8 Balanced, DSUB 25pin connector Analog in 9-16 Balanced, DSUB 25pin connector WC in: BNC 75 ohm with switchable termination OUTPUTS AES-EBU out x 8, transformer balanced, DSUB 25pin connector (192k single wide compatible) Optical: toslink x 4, supporting ADAT and SMUX protocol WC out: BNC 75 ohm OPTION SLOT One x-type card can be installed, for Firewire, HD and or other future format connectivity
SPECS: Sample rates internal: 44.1/48/88.2/96/176.4/192k Sample rates external: 44.1/48/88.2/96/176.4/192k +/- 10% Frequency response at 44.1 k : 5 - 20.000 Hz (+/-.2 dB) Analog levels: 6 to 24dBu max through digital gain adjustment. (Compatible with -10dBV levels) THD+N: -110 dB Dynamic range: 120 dB A weighted Power: 100 -240 VAC, 50 - 60 Hz, 65 Watt
Due to on-going development Apogee reserves the right to change all information and specications without notice.
AD-16X USERS GUIDE - v2.0 - January 2005
Text conceived and delivered by: Roger Robindore Graphics and illustration by: Sean McArthur