NEMO EXCEL

Users Guide

Dive computer

Nemo Excel dive computer

TABLE OF CONTENTS

Nemo Excel dive computer Responsible Diving Practices Quick Start Guide Time Mode display Time Menu Time Menu Settings Setting the date and time Main Menu Off Mode Switch-on Dive Menu Settings Setting the Dive Parameters Set Time Adj time Adj Alarm 2nd Time Set Temp Set Beep Stopwatch Time Personalize display Shortcut to Set Time Functions Set Dive Set dive Data (fig 21) Set Dive - Data - Del Tissue Set Dive - Mode Air Set - Air - Altitude Set - Air - Personal correction factor Set - Air - Fast Asc Set - Air - Al Beep Set Dive - Mode Nitrox Set - Nitrox - %O2 Set - Nitrox - PPO2 Dive Predive - Air Dive - Air Dive - Air Time to surface (Asc Time) Decompression stops Deep Stops Ascent Safety Stop
Surfacing - Air Surface Mode - Air Dive - Nitrox (EAN) General Nitrox Dive Parameters Effects on Central Nervous System Predive - Nitrox (EAN) Dive - No Deco Nitrox Dive - Deco Stop Nitrox Surfacing - Nitrox Surface Mode - Nitrox Dive - Bottom Time (gauge) Surface mode - BT Plan Scrolling of No Decompression Limits Free Dive Set Dive - Mode Free Dive Set Free - Alarms On/Off Set Free - Max Dive Time Set Free - Max Depth Set Free - Surface Time (fig 44) Set Free - Al Depth Pre Dive - Free Diving Dive - Free Diving Surface Mode - Free Log Book Log Book - Scuba Log Book - Free Dive Log Book - Dive n Log Book - Scuba - Tech Data Log Book - Scuba - Profile Log Book - Free - Session Data Log Book - Free - Dive Data PC Mode Interfacing to a PC Troubleshooting Questions and Answers Maintenance Replacing the battery Replacing the strap Technical characteristics Functional characteristics WARRANTY DISPOSAL OF THE DEVICE

Nemo Excel dive computer

Your new NEMO Excel Watch-Dive Computer is the result of the latest Mares technology, and has been designed to guarantee maximum safety, efficiency, reliability and long life. Its simple and intuitive functions make it ideal for everyday use as well as for all types of dives. This manual contains all the instructions for its use. Mares thanks you for your choice and urges you to always practice safe and responsible diving. Enjoy! No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form without the written permission of MARES S.p.A. Mares and RGBM are registered trademarks of MARES S.p.A. All other company names and trade names mentioned in this document are brands or registered trademarks of their respective owners. Mares adopts a policy of continuing improvement, and therefore reserves the right to make changes and enhancements to any of the products described in this manual without notice. Under no circumstances shall Mares be held responsible for any loss of data, irrespective of the cause.
Responsible Diving Practices

WARNING

Before diving, make sure you have read and understood all parts of this manual.
Check your computer frequently during the dive. Comply with the ascent rate indicated by the computer. Always do a safety stop between -6 and - 3meters (-20and -10feet) for at least 3minutes. After any decompression stops, ascend very slowly to the surface. Avoid yo-yo dives (repeatedly ascending and descending underwater). Avoid strenuous activity during the dive and for half an hour after surfacing. When diving in cold water or after an intense exertion, start ascending well before reaching the no-decompression limits. In the case of a decompression dive, prolong the decompression stop nearest the surface for safety. Repetitive dives should be separated by a surface interval of at least 2hours. Your deepest dive should be the first one of the day. Avoid diving until the desaturation time deriving from the previous dive has elapsed. When doing repetitive dives for several consecutive days, take at least one day off from diving every week. In the case of decompression-stop diving, it is recommended to take one day off from diving every three days. Avoid decompression-stop dives and do not dive deeper than 40meters (130feet) unless you have been specifically trained in this type of technical diving. Avoid repetitive square profile dives (dives to a single depth) deeper than 18meters (60feet). Always wait at least 12hours, and preferably 24hours, after a dive before flying, in accordance with the recommendations of the Divers Alert Network (DAN).

The dive computer cannot ensure against possible decompression sickness. The dive computer cannot take into account the physical conditions of the individual diver, which may vary from one day to the next. For your safety, have a general medical check-up before undertaking a dive.

Fig. 1

The hours and minutes are shown at the center of the display, while the seconds are shown in analog form around the perimeter of the dial. Underneath the hour there is a display bar (fig.1).
which can be used to view additional information, using the <+> or <-> buttons (fig.2): the date; the second time; the alarm; the temperature. Note: these are the default display details.

Time Menu Settings

Watchset mode is used for setting all the watch (Time) functions of your Nemo Excel dive computer. In this mode you can set the time and the alarm. You can also enable and set up a second time zone, which is useful when traveling, and select the units of measurement for temperature (C or F). Finally, in this mode you can also set the audible alarms. The different settings will all be described in more detail subsequently. For now, we will only describe setting the date and time of your new Nemo Excel dive computer. From the Time Menu, already described in the preceding page, press the <+> or <-> buttons until Watchset appears on the display bar. Press the <enter> button to accept the selection (fig.4). You are now in the Watchset menu.
Setting the date and time
Press the <+> or <-> buttons until adj time appears on the display bar (fig.6), and then press <enter> to accept the selection.

Fig. 6

You can now set the date and time (fig.7).

Fig. 2

Time Menu
From Time mode, press the <esc> button to access the Time Menu, denoted by the Time message on the display bar. Press the <+> or <-> buttons to view the contents of this menu (fig.3).

Fig. 4

Press the <+> or <-> buttons to view the various items in this menu on the display bar (fig.5).

Setting the Dive Parameters
In Set Dive - Data you can set the type of water (which influences the accuracy of the computers depth readings) and the units of measurement. Be careful, because in this mode you can also clear the residual nitrogen memory (see Set Dive section). To ensure maximum accuracy, you need to set Nemo Excel for fresh water (Fresh) or seawater (Salt) as appropriate (fig.11).

Fig. 8

In the previous sections you saw how to navigate the Time Menu. Now we will look at the Main Menu, which provides the only link between the other two menu modes and the Off function (fig.9).

Fig. 9

Mares has very clearly distinguished the different operating modes in Nemo Excel, to maximize its ease of use, avoid possible interpretation errors and highlight different features depending on the situation.

Off Mode

From the Main Menu you can access Off Mode, which enables you to conserve battery power when the instrument is not in use.

Switch-on

To switch on your Nemo Excel, simply press any one of the buttons. During switch-on Nemo Excel performs a self-test of the system and display. This procedure lasts a few seconds. In Main Menu mode, select the Off item and the TO OFF message will appear on the display, together with the instrument serial number (on the display bar), which is essential for the warranty (see warranty section).

Fig. 11

Fig. 10
You can do this by pressing the <+> or <-> buttons. Remember to check this setting often, especially if you use Nemo Excel in different environments: lakes, sea, rivers, swimming pool. Press the <enter> button to save the water setting, and then go on to select either metric (meters and Celsius) or imperial (feet and Fahrenheit) units of measurement. Press and hold down the <esc> button for 2seconds to go back to Time Mode. Thats all for the quick guide! Read the full instruction booklet to learn more. Happy diving with Nemo Excel! Note Pressing <esc> during the settings cancels any changes made and reverts to the preceding value; pressing <enter> during the settings accepts the changes made and advances to the next parameter, or returns to the higher menu level.

Press <enter>again to accept this item as well. You are now in Set Dive - Data mode, which enables you to set all the general parameters of the dive.

Set Time

Set Time is used for setting all the information which appears on the instrument in Time Mode. Set Time comprises (fig.12):

Adj time

As already described briefly in the quick guide, the Adj Time menu is used for setting the date and time of the first time zone. It is also possible to choose the format for the primary time display(12h - 24h) (fig.13).

Adj Alarm

The alarm is referred to whichever time is on the primary display, which can be either the first or second time zone. The following paragraph explains how to enable and set a second time zone. Note the alarm time format (12h - 24h) depends on the selection made for the primary time display. To set the alarm, access Set Time - Alarm and press the <enter> button to enable the alarm (the ON message will appear on the display bar) (fig.14).

Fig. 14

Fig. 12
Adj Time: set the time, its format (12or 24hour), and date. Alarm: set and turn on/off the alarm. 2nd Time: enable and set a second time zone. Temp: select the units of measurement. Beep: enable time signal. As described in the chapter Shortcut to Set Time Functions, to provide quicker access to the settings the Set Time function can be invoked directly from Time Mode.
Press the <enter> button again to access the function for setting the alarm time. If the alarm is turned on, Nemo Excel will sound for one minute at the programmed time. To silence the alarm, press any one of the buttons. Note Nemo Excel will automatically re-activate the alarm for the following day; to avoid this, go back to SET TIME ALARM and turn the alarm off. Note The alarm function is disabled when Nemo Excel is in DIVE mode. Note

Fig. 13

In Set Time, press the <+> or <-> buttons until Adj Time appears on the display bar and press the <enter> button to accept the item. Use the <+> or <-> buttons to adjust the values. Press and release the button to change the value by one unit at a time, or hold down the button for rapid increment or decrement. Press the <enter> button to save the changes made. As illustrated in the figures, you must first set the time, followed by the format, and finally the date. The chosen time format will be used in all the Nemo Excel operating modes: alarm, second time zone, log book, dive, stopwatch. Note Pressing <esc> during the settings cancels any changes made and reverts to the preceding value; pressing <enter> during the settings accepts the changes made and advances to the next item or returns to the higher menu level.

Fig. 16 Fig. 20

To revert to the default empty field, simply scroll to the empty field item and press the <-> button for 2seconds (fig.2).
After a dive in AIR or EAN or BT mode, Nemo Excel will continue to display the desaturation and no-fly times until both have gone to zero. In the case of Nitrox dives, the percentage
Shortcut to Set Time Functions
To speed up the operations for setting the time, date, second time, alarm and temperature, Nemo Excel includes shortcuts to the Watchset menu. To use these shortcuts, simply press the <+> or <-> buttons to access the desired item. Before the 10seconds of display elapse, press the <enter> button for 2seconds. This will directly access the chosen setting.

Set dive Data (fig 21)

Set Dive - Data - Del Tissue
This item is used for clearing the residual nitrogen memory of the tissue compartments (fig.22).

Set Dive

SET DIVE mode is used for programming the following parameters: Set dive - Data meters - Celsius / feet - Fahrenheit salt / freshwater Clear residual nitrogen Set Dive - Mode AIR Altitude Personal correction factor Uncontrolled ascent Audible alarms Nitrox Percentage O Maximum PPO Altitude Personal correction factor Uncontrolled ascent Audible alarms

Fig. 22

In Set Dive - Data mode, scroll until the blinking DELETE message appears. Press <enter> to invoke the confirmation options, which will show a blinking NO message. Use the <+> or <-> buttons to change this message to OK. Then, once the OK message has appeared, press <enter> to clear the residual nitrogen in the tissue compartments.

Fig. 21

Free dive Audible alarm for maximum dive time Setting the maximum dive time Audible alarm for maximum dive depth Setting the maximum dive depth Audible signal for surface interval Setting the surface interval Audible signal for depth intervals Setting the depth intervals
Set Dive - Data mode is used for selecting the type of water (salt or fresh), which determines the accuracy of the computers depth reading, as well as the units of measurement (metric or imperial), and for clearing of the residual nitrogen memory. To ensure maximum accuracy, you need to set Nemo Excel for either fresh water (Fresh) or seawater (Salt) as appropriate. Check this setting often, especially if you use the instrument in a variety of environments (lake, sea, swimming pool). Press the <enter> button after the last item to return to the SET DIVE menu. Note Pressing <esc> during the settings cancels any changes made and reverts to the preceding value; pressing <enter> during the settings accepts the changes made and advances to the next item or returns to the higher menu level.

We advise that when diving you always put Nemo Excel into Predive mode. This ensures correct functioning even if the wet contacts are dirty with salt, oil, sunscreen, etc. Early in your dive, always check that the dive computer is switched on.

Predive - Air

This operating mode remains active until the diver goes below 1.2meters (4feet). The following details are displayed (fig.26): type of dive (Air); units of measurement (m-C or ft-F); type of water (Salt, Fresh); altitude program (if enabled) and level; personal correction factor (if enabled) and level; battery power level.

Dive - Air

NO-DECOMPRESSION DIVE When the diver descends below 1.2meters (4ft) Nemo Excel automatically switches to Dive Mode and starts displaying the dive data. If this mode persists for more than 20seconds, Nemo Excel will begin recording the dive details in the Log Book memory (fig.27).

Fig. 28

<+> button: temporarily replaces the current depth reading with the maximum depth (for 5seconds, after which the display reverts to showing the current depth); holding down the button for 2seconds activates the display backlight.
<-> button: is used for changing the information shown on the display bar. <enter> button: temporarily displays (for 10seconds) the dive parameter settings, just as they appear in Predive Mode. <esc> button: this button is disabled during the dive.
On the display bar it is possible to view one of the following the ascent time, i.e. the total time necessary for surfacing; the temperature (in C or in F). Or the ascent time; the duration of the dive so far (dive time) in digits. Or the ascent time; the primary time. The buttons have the same functions described in the preceding section on Nodecompression diving.

Deep Stops

Note During the dive, when the conditions exist, Nemo Excel will display a deep icon. This display is helpful in planning the deep stop during the ascent. Note When the <ESC> button is pressed during the dive, Nemo Excel will temporarily display the estimated deep stop required. The data displayed during the ascent may vary as a result of the divers behavior. Divers should check this data during the ascent for more precise information on the estimated stop.

Fig. 31

Safety Stop
If the maximum depth of a dive exceeds 10meters, a Safety Stop is activated for the ascent. In this case Nemo Excel prompts for a 3minute safety stop, at a depth between 2.5and 6m (8- 19ft), displaying the SAFESTOP message until the stop has been completed. If the diver moves outside the above mentioned depth range, the safety stop timer is halted. When the diver re-enters the correct depth range, the safety stop timer resumes from where it left off. If the diver returns to a depth below 10m (32ft), the safety stop timer will ignore the previously aborted stop and subsequently start counting down from 3minutes again. In the case of a decompression-stop dive, the safety stop extends the duration of the decompression stop at 3m (10ft) by an additional 3minutes, displaying the safety stop information as described previously (fig.32).

Fig. 33

Data displayed in Surface mode: duration of the dive; maximum depth; icons for any mistakes made during the dive(omitted stop, uncontrolled ascent).
The following section only describes the dive parameters specific to Nitrox dives, and the differences in the display layouts.
Before the dive, make sure you have correctly set up all the Nitrox dive parameters: percentage of oxygen in the mix and limit for the partial pressure of oxygen, which together determine the maximum depth of the dive.

Surface Mode - Air

When the dive is considered finished, Nemo Excel Excel switches from Dive Mode to Time Mode, with the desaturation and no-fly times shown on the display bar as described in the Time Mode section. In addition, Nemo Excel displays the icons for any errors made during the dive (omitted stop, uncontrolled ascent) (fig.34).

Fig. 34

For further information, refer to the Time section of this manual.

Fig. 32

Do not fly or travel to high altitudes while the no-fly indication remains active.
Nemo Excel should be used for diving with oxygen rich mixes (Nitrox) only by divers who have the necessary certification. Lack of appropriate diver training may result in possibly serious injury.

Fig. 38

deco icon; current depth (in m or ft); depth of deepest decompression stop (in m or ft); duration of the deepest decompression stop; duration of the dive so far, in minutes, shown in analog form around the perimeter of the dial; icons for the altitude program and personal correction factor (if enabled). On the display bar it is possible to view one of the following the ascent time, i.e. the total time necessary for surfacing; the %CNS. Or the temperature (in C or in F); the duration of the dive so far (dive time) in digits. Or the % O ; the primary time.
Dive - Bottom Time (gauge)
In this mode Nemo Excel functions as an electronic timer and depth gauge, but does not perform any calculations for no-deco limits or for deco-stop times. Responsibility for planning the no-decompression limits or an adequate decompression therefore lies entirely with the user. The details displayed in Predive and Surfacing mode are the same as those already described for air or Nitrox dives (fig.39).

Surface mode - BT

The desaturation time and the delay before flying or traveling to high altitudes are displayed in the same way as for Air or Nitrox dives. Note After a dive in BT mode, the transition to Air or Nitrox mode will be disabled for 24hours. (This lockout can be disabled by clearing the residual nitrogen memory in Set DiveData mode). Bottom Time with behavior error
Note The procedure for scrolling the items on the display is identical to that described in the section on diving with compressed air.
To fully understand how to perform decompression with Nitrox, the user should also carefully read the corresponding section for compressed-air deco stop dives.

Fig. 39

The following errors can occur during an air or Nitrox dive: uncontrolled ascent; omitted stop. In this case, Nemo Excel will inhibit the Dive- Air and Dive - EAN modes for 24hours, allowing only operation in BT mode, while continually displaying the underwater behavior error in question. The corresponding error icons are displayed in Dive, Surface and Logbook mode.
The details displayed in Dive Mode are instead the following (fig. 40).
This option is intended only for highly experienced divers. Users who clear the residual nitrogen memory cannot then use the instrument for repetitive dives. After this operation, do not dive with Nemo Excel if you have already dived within the previous 24hours.

Fig. 46

Pre Dive - Free Diving
This operating mode remains active until the diver goes below 1.2meter (4feet). The following details are displayed (fig. 45):
current depth (in m or ft); duration of the dive in minutes and seconds; alarm icons (if enabled); temperature (in C or in F). In this mode, all the functions of the buttons are disabled with the exception of the backlight (press the <+> button for two seconds).

Surface Mode - Free

When the diver ascends to the surface, Nemo Excel switches to Surface mode (fig. 47).

Fig. 45

type of dive (Free); units of measurement (m-C or ft-F); type of water (Salt, Fresh); alarm icons (if enabled); battery power level.

Fig. 47

Log Book - Scuba
The first page of this Log Book section contains a summary of all the Scuba dives, comprising the following details (fig. 48): maximum depth reached; total dive time (hours); total number of dives done; coldest logged temperature.
The battery power level is shown graphically along the perimeter of the dial. If the indication drops below the 6 oclock position it is advisable to replace the battery immediately before diving in particularly cold water, or if a lenghty series of dives is planned. Do not dive if the residual battery charge is less than 25% (graphically equivalent to one quarter of the dial). If the battery power indicator drops below the 2 oclock mark on the dial, the low battery icon will appear. In this case, the backlight function will be disabled. Under these conditions the battery has a residual life of approximately two more standard dives, therefore it is advisable to replace it immediately. When the power indicator drops below the 1 oclock mark Nemo Excel disables the dive computer, and only the time function remains active. Immediately replace the battery to resume using it as a dive computer.
In this mode, the details shown on the display are: maximum depth (in m or ft); surface time in minutes and seconds; sequential number of the dive; duration of the dive in minutes and seconds; alarm icons (if enabled). Pressing the <-> button additionally displays: temperature (in C or in F); the primary time. <esc> button: allows the user to exit Dive Mode and then change the alarm settings. <enter> button: temporarily displays (for 5seconds) the dive parameter settings, just as they appear in Predive Mode.

Fig. 48

Press the <enter> button to access the details for each individual dive (explained on the following page).

Log Book - Free Dive

The first page of this Log Book section contains a summary of all the Free dives, comprising the following details (fig. 49): maximum depth reached; longest logged dive (minutes and seconds); coldest logged temperature.

Type of dive AIR EAN freedive BOTTOM TIME Note If the memory is full, when the user dives again the oldest record will be deleted to free up memory for the new dive.
Log Book - Scuba - Profile
In Profile mode it is possible to examine the profile points of a dive, spaced at 20second intervals. Press the <+> button once to advance to the next profile point, or hold it down to activate automatic scrolling. A graphic indication of the progress through the profile points is shown around the perimeter of the dial. The details displayed in Profile mode are the following (referred to the end of each time interval): current depth; fastest ascent rate; dive time elapsed (fig. 52).
Log Book - Scuba - Tech Data
This mode displays the summary details of each individual dive (fig. 51):

Fig. 49

Press the <enter> button to access the details for each individual session (explained on the following page).

Log Book - Dive n

When viewing the details of the individual dives, these are numbered sequentially in reverse chronological order. The following details are displayed (fig. 50): sequential dive number; start date and time of the dive; type of dive (Air, EAN, Free, Bt)

Fig. 51

Type of dive: Air, EAN, BT. Maximum depth reached. Maximum ascent rate reached. Uncontrolled ascent icon (only Air, EAN, Bt). Omitted deco stop (AIR, EAN only). dec icon for decompression-stop dives (only Air, EAN). Omitted deco stop (AIR, EAN only). Selected personal correction factor (only Air, EAN). No dec icon for no-decompression dives (only Air, EAN). Selected altitude program (only Air, EAN). Press the <-> button to choose to view one of the following on the display bar: % O in the breathing mix (EAN only); % CNS maximum (EAN only).

Fig. 52

As well as any icons such as: dec icon for deco-stop dives (only Air, EAN); omitted deco stop icon (only Air, EAN); personal correction factor (AIR, EAN only); no dec icon for no-decompression dives (only Air, EAN); Selected altitude program (only Air, EAN). Press the <esc> button to return to the preceding menu at any time.
Log Book - Free - Session Data
This mode displays the summary data for the individual freediving session (day) selected in Log Book Dive n mode. The following details are displayed (fig. 53): Free diving mode; deepest logged depth during the session.
Or lowest logged temperature, dive time elapsed.

Fig. 50

Or type of water (Salt, Fresh); Press the <enter> button to examine the profile of the dive. Note For dives in Bt mode, the uncontrolled ascent and omitted deco stop icons are referred to errors during the preceding dive.
Press the <+> or <-> buttons to advance from one dive to the next. Press the <enter> button to view the details of the selected dive. Press the <esc> button to return to the preceding menu. Before discussing the freediving log book, we will first complete the section on Scuba dives.

Fig. 53

Press the <-> button to choose to view one of the following on the display bar: number of dives done during the session; longest dive time. Or type of water (Salt, Fresh). Or coldest logged temperature. Press the <enter> button to access a menu for viewing the principal data of the individual dives. Note If the alarm settings are changed during the surface interval, Nemo Excel will close the session currently in progress and initiate a new one (attention: in this case, even if all the dives take place in the same day, Nemo Excel will delete the profiles of any dives completed before making the changes to the settings). Note All the Free Dive mode alarm settings are recorded, however they can only be displayed using the PC Iris interface (optional).

Fig. 55

Iris interface unit (optional) which converts the optical signals into electrical signals and vice versa (fig. 55). Nemo Excel is provided with an infrared transmitter, situated beneath the display at the 6 oclock position. During data transfer it is essential not to obstruct this area. To begin uploading data from Nemo Excel to the personal computer, select PC mode on Nemo Excel and then follow the instructions provided by the interface software installed on the personal computer.
Log Book - Free - Dive Data
This mode displays the summary data for the dives of a particular session selected in Log Book - Session - Data. To move between the different dives, which are numbered in reverse chronological order, press the <+> or <-> buttons (fig. 54).
Troubleshooting Questions and Answers
Q:When I replace the battery, will my Log Book dive data be lost? A:No. Q: What happens if I replace the battery after a dive, before the desaturation time has gone to zero? A: The residual nitrogen memory will be cleared, and the RGBM calculations for any previous dives will be aborted. The diver who used the computer in the previous dive must not dive for at least 24hours. Q:What happens if I start a dive while Nemo Excel is still in Time mode? A:Nemo Excel constantly monitors for contact with water. When water is detected it remains in Time mode, but prepares to activate Dive mode as soon as the user descends below 1.5m (5ft) in Scuba mode or below 1m (3ft) in Free Dive mode. Q:What happens if there is an uncontrolled ascent or omitted decompression stop during an Air or Nitrox dive? A:At the end of the dive Nemo Excel will automatically switch to Stop mode. The only Scuba mode that remains active, in this case, is Bottom Time Q:What indicates that Bottom Time mode was chosen by the user, rather than forced as a result of underwater behavior errors during the preceding dive? A:In the latter case, during the dive and in surface mode, the pertinent error icons are displayed along with the standard Bottom Time indications. Q:If I select Air or Nitrox mode after completing a dive in Bottom Time mode, how will the new dive be managed? A:Nemo Excel does not allow you to do an Air or Nitrox dive in the 24hours immediately following a Bottom Time dive.

Q:Where can I find the product serial number? A: From the main menu (refer to the quick guide or the Warranty chapter). Q:What is the purpose of Off mode? A:Switching Nemo Excel to Off mode when it is not in use prolongs the life of the battery. All the settings will still be retained, and Time mode remains active. Q:If I already own the Iris interface, can I use it with Nemo Excel? A:You need to check that the software version supports the Nemo Excel data format. If this is not the case, download the latest version from the website. Q:Sometimes the temperature indication is too high in time mode. A: The thermometer was calibrated for use underwater; out of the water Nemo Excel is affected by your body temperature. Therefore if you want a more accurate temperature reading, we suggest that you take the Nemo Excel off your wrist and leave it for a few minutes on a surface that is not influenced by other temperatures. Q:When I switch on Nemo Excel, some strange characters appear on the display. A: During switch-on Nemo Excel performs a self-test of the system and display. This procedure lasts a few seconds. At the end of the self-test Nemo Excel automatically goes into Time Mode. Q:In Off mode, in addition to the serial number, two small numbers are displayed near the hour 3. What are they? A: These numbers indicate the version of firmware installed. Q:Every so often, two opposing arrows appear on the left of the display. What are they? A:When lit, the two icons signal the activation of the wet contact.

Maintenance

It is advisable to periodically clean the surface of the sensor which detects contact with water, to prevent any deposits from compromising the correct functioning of Nemo Excel. Do not use chemical products; wiping with a soft cloth is sufficient. At the end of a dive (even in a swimming pool) or whenever Nemo Excel has been submerged, wipe the surface of the sensor which detects contact with water. After diving in seawater it is recommended that you rinse Nemo Excel with fresh water to remove any salt residues.

Fig. 54

The following details are displayed: maximum depth reached; time at the surface before the dive; dive time elapsed. The profile of the last session can only be displayed by downloading the data to a PC (using the optional IRIS interface).
The steel case and the mineral glass are not exempt from possible scratches caused by improper use. Note If signs of moisture are observed on the interior of the mineral glass, take your Nemo Excel immediately to an authorized Mares service center. In any case, Mares declines responsibility for any water infiltrations resulting from an incorrect battery replacement procedure.

PC Mode Interfacing to a PC
Using a special interface unit and a dedicated Windows software application, it is possible to transfer all the data from the Nemo Excel Log Book to a personal computer. The communication between Nemo Excel and the PC is optical. It takes place via the special

Replacing the battery

The battery may only be replaced by an authorized Mares service center.
Mares declines all responsibility in the event that the battery is NOT replaced at an authorized Mares service center. Instructions for replacing the battery are available in a separate document for use by authorized Mares service centers.

Replacing the strap

The strap may only be replaced by an authorized Mares service center.
Algorithm RGBM Mares-Wienke, the result of a collaboration between Dr. Bruce R. Wienke and the Mares Research and Development Center. 10 tissue compartments Reduction of permissible gradient (Mfactors) in case of repetitive dives, deeperthan-previous dives or multi-day diving. deep decompression stops safety stop ascent rate: 10m/min altitude programs: P0 from 0 to 700meters ASL (0-2296 ft); P1 from 700to 1500meters ASL (2296-4921ft); P2 from 1500 to 2400meters ASL (4921-7874ft); P3 from 2400 to 3700meters ASL (7874-12139ft). Personal correction factor for added safety

WARRANTY

MARES products are guaranteed for a period of two years subject to the following limitations and conditions: The warranty is non-transferable and applies strictly to the original purchaser. MARES products are warranted free from defects in materials and workmanship: upon serious technical inspection, any components that are found to be defective will be replaced free of charge. Mares S.p.A. declines all responsibility for accidents of any kind that result from tampering or incorrect use of its products. VALIDATION OF THE WARRANTY To validate the warranty, the first purchaser must mail this certificate complete with the vendors stamp to Mares S.p.A. within 10days of the date of purchase. Any products returned for overhaul or repairs under warranty, or for any other reason, must be forwarded exclusively via the vendor and accompanied with a proof of purchase slip. Products travel at the risk of the sender. WARRANTY EXCLUSIONS Damage caused by water seepage resulting from improper use (e.g. dirty seal, battery compartment closed incorrectly, etc.) Rupture or scratching of the case, glass or strap as a result of violent impact or blows Damage resulting from excessive exposure to elevated or low temperatures. HOW TO FIND THE PRODUCT CODE To display the product code, simply select the OFF item from the Main Menu. The instrument serial number will appear on the display bar. You should note this number on the warranty certificate inside the packaging. The serial number can also be found on the Nemo Excel packaging.

MARES NEMO EXCEL DIVE COMPUTER

KEY FEATURES

FOUR BUTTON TECHNOLOGY FULLY FUNCTIONAL WATCH FREEDIVING MODE RGBM MARES-WIENKE ALGORITHM EAN COMPATIBLE 21% - 50% OPTIONAL PC USB INTERFACE SAPPHIRE MINERAL GLASS FACE STAINLESS STEEL CASE MAXIMUM DEPTH 492 FT. 2 YEAR WARRANTY

NEMO EXCEL FLOW CHART

DIVE MODE

4. PC LINK

1. DIVE

PRESS ESC TWICE

PRESS BOTTOM BUTTON TO CHOOSE TIME MODE, DIVE MODE OR OFF MODE

START HERE

PRESS ANY BUTTON TO TURN ON WATCH PRESS ESC 2 TIMES PRESS +/- TO SCROLL CHOOSE MODE

4. LOGBOOK

2. SET DIVE
Hold top button down for 2 seconds for backlight illumination

3. PLANNING

DISPLAYS CURRENT TIME DEFAULTS TIME - DATE PRESS + FOR EACH + 2ND TIME + ALARM TIME + TEMPERATURE

1. DIVE CURRENT DIVE

SHOWS CURRENT DEFAULTS READ PAGES 35-66
2.1 SET DATA 1.1A WATER TYPE 1.1B IMPERIAL / METRIC 1.1C DELETE DATA 2.2 SET MODE 2.2A AIR ALTITUDE P 0-3 PERSONAL FACTOR 0-2 FAST ASCENT ALARM ASCENT ALARM BEEP 2.2B EAN PERCENT O2 PPO2 1.2 1.6 ALTITUDE P 0-3 PERSONAL FACTOR 0 -2 FAST ASCENT ALARM ASCENT ALARM BEEP 2.2C BOTTOM TIME 2.2D FREEDIVING (SEE PAGES 58-59)
3.1 DEPTH / BOTTOM TIME CALCULATIONS
4. LOGBOOK LOGBOOK FOR EACH MODE
MAXIMUM 36 HOUR SCUBA CAPACITY FREEDIVING 2000 DIVES TO 102 MIN. 4.1 DIVE OVERVIEW NUMBER OF DIVES BOTTOM TIME GAS USED DATE 4.2 DIVE PROFILE
ACTUAL TIME CHRONO STOPWATCH WATCHSET ADJ TIME TIME SET 12/24 DATE SET BEEP HOUR BEEP TEMPERATURE TEMP F/C

5. PC LINK

5.1 DOWNLOAD TO COMPUTER

BATTERY

LITHIUM BATTERY 3V CR 2430 ESTIMATED BATTERY LIFE 170 DIVES

MOVING DASHES

MOVING DASHES REPRESENT DIFFERENT FUNCTIONS BASED ON MODE SUCH AS BATTERY STRENGTH, SECONDS, BOTTOM TIME, ETC. REFERENCE MANUAL FOR DETAILS
Read and understand FAQ on Pages 63-64