Manuals+

Mares Nemo Wide Dive Computer User's Guide

Introduction

Congratulations on your new Mares Nemo Wide Dive Computer. This device represents the latest Mares technology, designed for maximum safety, efficiency, reliability, and longevity. It is simple and easy to use, making it ideal for all types of dives. This manual provides all necessary instructions for its use. Mares thanks you for your choice and encourages safe and responsible diving practices.

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 reserves the right to make changes and enhancements to its products without prior notice. Mares shall not be held responsible for any loss or damage sustained by third parties deriving from the use of this instrument.

Important Warnings

Critical information or warnings that might affect performance or result in injury are highlighted with the following symbols:

Before diving, ensure you have read and understood all parts of this manual.

The Nemo Wide dive computer is designed exclusively for recreational sports use and not for professional applications.

In addition to the dive computer, always use a depth gauge, a submersible pressure gauge, a timer or watch, and dive tables.

Never dive alone; the Nemo Wide cannot replace a diving buddy.

Do not dive if the instrument's readings appear irregular or unclear.

The dive computer cannot guarantee against possible decompression sickness. It cannot account for individual physical conditions that may vary. For your safety, have a general medical check-up before undertaking a dive.

Always check the battery power level before starting a dive. Do not dive if the low battery icon is displayed. Replace the battery.

Do not fly within 24 hours of your last dive, and wait until the Nemo Wide "no fly" warning disappears.

Recreational divers should not dive deeper than 40 m (130 ft). While the computer provides information for dives deeper than 40 m, the risk of nitrogen narcosis and decompression sickness (DCS) is greatly increased, so this information should be treated as approximate.

Never dive to depths greater than 40 m (130 ft), and do not perform decompression dives unless you possess the specific license for deep scuba diving and fully understand the risks and skills required. This type of dive carries a greater risk of decompression sickness, even for qualified divers. Divers attempting these dives must have completed specialist courses and gained necessary experience.

The safety of a dive is increased through adequate preparation and training. Mares recommends using the dive computer only after completing a specialist diver training course.

Responsible Diving Practices

Mares recommends scrupulous adherence to the following rules:

How the Nemo Wide Dive Computer Works

The Nemo Wide has 8 operating modes: DIVE, WATCHSET, TIME, PC, LOGBOOK, PLANNING, SET DIVE, OFF.

Press any button to turn on the Nemo Wide; the word "DIVE" will appear. You can navigate through functions using the four keys (Fig. 1).

Fig. 1: Button Functions. This figure illustrates the Nemo Wide dive computer with four buttons: + (moves forward), - (moves backward), ENTER (accepts selection), and ESC (does not accept selection or exits current mode).

The buttons function the same way in every operating mode:

Battery Charge Check

Nemo Wide periodically checks the battery charge. The level can be viewed in OFF mode (Fig. 2).

Fig. 2: Battery Status. This figure shows the Nemo Wide in OFF mode displaying battery status, with an icon indicating low battery.

Temperature can noticeably affect battery voltage. The low battery icon may appear due to low temperatures, even if the battery has sufficient capacity. In this case, backlighting is disabled. If backlighting is disabled due to low temperature, repeat the battery status check in OFF mode. If the battery icon disappears, backlighting is re-enabled.

We advise replacing the battery if you intend to dive in cold water.

If a low charge level (20%) is detected, the battery icon turns on and display backlighting is disabled. Replace the battery as soon as possible. If the charge level drops to the minimum value (5%), all Nemo Wide functions are disabled, and only OFF mode is accessible.

When the computer has not been used for a long time, check the battery status and replace it if necessary.

Automatic Switch-Off

If Nemo Wide is switched on but no buttons are pressed for a period, it will switch off automatically. The delay varies depending on the current operating mode.

Backlighting

Pressing the + button for two seconds will temporarily turn on the backlight (for about 4 seconds).

Setting Parameters for the Nemo Wide Dive Computer

Adjusting the Watch: WATCHSET

The WATCHSET menu (Fig. 3) has three submenus for adjusting parameters:

Fig. 3: WATCHSET Menu Structure. This figure illustrates the WATCHSET menu, showing submenus for ADJ TIME, Key Beep, and Contrast.

From the main menu, use the + or - keys to select WATCHSET mode. Pressing ENTER displays "ADJ TIME".

WATCHSET - ADJ TIME

Press ENTER to enter this mode. Use + or - to adjust values. Press and release to change by one unit, or hold to scroll. Press ENTER to save and move to the next selection. ESC exits to the previous set. Use +/- to move to Key Beep.

WATCHSET - KEY BEEP

Press ENTER to access this mode. Use +/- to select audible feedback for key presses. Press ENTER to accept. Use +/- to move to Contrast.

WATCHSET - CONTRAST

Press ENTER to enter this mode. The current contrast value is displayed. Change it using +/- keys. Press ENTER to accept. Pressing ESC exits to the main WATCHSET menu.

Adjusting Dive Parameters: SET DIVE

This menu allows setting general data and operational modes for a dive. SET DIVE has two submenus:

In Set dive - Data, you can change parameters like salt/freshwater, meters/feet, Celsius/Fahrenheit, and clear residual nitrogen.

In Set dive - Mode, you can change parameters based on the dive type selected (Air, EAN, Bottom Time).

From the Main Menu, use +/- to select SET DIVE mode. Press ENTER to display "DATA" (Fig. 4).

Fig. 4: SET DIVE - DATA Menu. This figure shows the SET DIVE menu, highlighting the "DATA" submenu.

Press ENTER to enter the set.

SET DIVE - DATA - FRESH / SALT

Before diving, ensure you have correctly set the units of measurement. Incorrect settings can lead to confusion and underwater errors.

To ensure accuracy, set Nemo Wide for fresh water ("Fresh") or seawater ("Salt"). Check this setting often, especially if using the instrument in various environments.

Use +/- to adjust values. Press ENTER to save and move to the next selection. ESC exits to the previous set.

SET DIVE - DATA - °C METERS / °F FEET

Select units of measure: metric (°C and m) or Imperial (°F and ft).

Use +/- to adjust values. Press ENTER to save and move to the next selection. ESC exits to the previous set.

SET DIVE - DATA - DEL TISSUE

This option is intended only for highly experienced divers. Users who clear the residual nitrogen memory cannot use the instrument for repetitive dives. After this operation, do not dive with Nemo Wide if you have already dived within the previous 24 hours.

This clears the residual nitrogen memory of tissue compartments. In Set Dive - Data mode, scroll to the blinking "DELETE" message. Press ENTER to call up the confirmation option ("NO" blinking). Change to "OK" using +/-. Press ENTER on "OK" to clear memory. Press ENTER on "NO" to keep memory. ESC exits to the previous set. Press ENTER after the last item to return to the Set dive - Data menu.

Move to Set dive - Mode using +/- keys.

SET DIVE - MODE

Set Dive - Mode is for setting general parameters for the planned dive type. Press ENTER to access. Select the dive type and adjust parameters. The last operational mode will appear selected (AIR, EAN, BOTTOM TIME).

Use +/- keys to choose the dive type.

If you have completed an EAN dive and wish to do a repetitive dive with air, set the computer for "EAN" with O2 at 21%. This keeps the % CNS calculation active.

AIR Settings

This section covers dives using compressed air. When "AIR" is displayed in Set dive - Mode, press ENTER. You can adjust the altitude first.

Set - AIR - Altitude

Altitude programs: P0 (0-700m), P1 (700-1500m), P2 (1500-2400m), P3 (2400-3700m) (Fig. 5).

Fig. 5: Altitude Programs. This figure displays altitude program settings (P0, P1, P2, P3) with corresponding depth ranges.

Use +/- to enter the desired value. Press ENTER to save and advance. This setting cannot be changed during the dive; check all settings carefully before going underwater.

Do not dive in mountain lakes without checking the appropriate altitude program is selected.

Set - AIR - Personal Correction Factor

Nemo Wide includes a personal correction factor for added safety, making the algorithm more conservative. Use it for inexperienced divers, strenuous dives, or after prolonged inactivity.

The PF0 program introduces no additional safety margin. This icon appears during the dive indicating if a personal correction factor is enabled and its level. The current program (PF0, PF1, PF2) is displayed when turning on the computer (Fig. 6).

Fig. 6: Personal Correction Factor. This figure shows the personal correction factor setting (PF0, PF1, PF2).

Use +/- keys to set the desired value. Press ENTER to save and move to the next set.

Set - AIR - Fast Asc

A rapid ascent increases the risk of decompression sickness.

This function enables or disables the "Stop" function for uncontrolled ascent to prevent the computer from locking out. It can be useful for instructors practicing emergency ascents. It displays the current setting ("ON" or "OFF") (Fig. 7).

Fig. 7: Fast Asc Setting. This figure illustrates the Fast Asc setting, showing "YES" or "OFF".

Use +/- buttons to change the setting. Press ENTER to save and advance.

This function is intended only for highly experienced divers who take full responsibility for disabling the "Stop" on uncontrolled ascent.

Set - AIR - Al Beep

This function enables or disables audible alarms. When the computer is turned on, it displays the current setting ("ON" or "OFF").

Use +/- buttons to change the setting. Press ENTER to save and return to Set - Mode. ESC returns to the main menu.

EAN Settings

The alarm for any deep stops always remains active.

Audible alarms should only be disabled by experienced divers who take full responsibility for this operation.

This section covers dives using EAN (Enriched Air Nitrox). When "EAN" is seen in Set dive - Mode, press ENTER. EAN parameters are similar to AIR, with added settings for oxygen percentage and maximum partial pressure. Refer to the "Set dive - Mode - AIR" section.

The use of oxygen-rich mixes exposes the diver to different hazards than compressed air. Be aware of these risks and how to avoid them.

Do not use breathing mixes with an oxygen percentage greater than 50%.

It is essential to correctly set the oxygen percentage to ensure accurate readouts of no decompression time remaining, decompression stop times, and alarms for exceeding maximum permitted PPO2.

Set - EAN - %O2

The oxygen percentage can be adjusted between 21% and 50%, in 1% increments (Fig. 8).

Fig. 8: EAN %O2 Setting. This figure shows the EAN %O2 setting, displaying a value like "32%".

Use +/- buttons to enter the desired value. Press ENTER to save and advance.

Set - EAN - PPO2

Nemo Wide alarms when partial pressure of oxygen reaches a pre-established limit (1.2 to 1.6 bar, in 0.1 bar increments). As this value changes, Nemo Wide shows the maximum dive depth compatible with the programmed oxygen percentage and partial pressure (Fig. 9).

Fig. 9: EAN PPO2 Setting. This figure shows the EAN PPO2 setting, displaying a value like "1.6" and indicating the maximum compatible depth.

Press ENTER to save and move to the next settings (altitude, personal correction factor, uncontrolled ascent, audible alarms), as covered in the AIR section.

BOTTOM TIME Settings

This section addresses dives using BOTTOM TIME mode (gauge mode). You can set audible alarms here. When "BOTTOM TIME" is seen in Set dive - Mode, press ENTER.

Set - BOTTOM TIME - Al Beep

This function enables or disables audible alarms. When the computer is turned on, it displays the current setting ("ON" or "OFF").

Use +/- buttons to change the setting. Press ENTER to save and return to Set - Mode.

Controlling the Time Settings

This menu allows control of current watch data, date, and temperature. Access TIME from the main menu using +/- keys. Press ENTER to select TIME.

The current time is displayed. Press + or - to view the temperature and current date (Fig. 10).

Fig. 10: Time Settings Display. This figure displays the current time, date, and temperature.

ESC button returns to the main menu.

You can also access watch settings by holding ENTER for two seconds when date or time is displayed, or dive data settings by holding ENTER for two seconds when the temperature reading appears.

Diving with Nemo Wide

We advise always putting Nemo Wide into Predive mode. Always check that the dive computer is switched on early in your dive.

Nemo Wide manages three types of dives: AIR, EAN, BOTTOM TIME (Gauge).

Display screens are grouped into four phases for clarity: Predive, Dive, Surfacing, Surface mode.

PREDIVE - AIR

This mode is active until the diver goes below 1.2 meters (4 ft). The following details are displayed (Fig. 11):

Fig. 11: PREDIVE - AIR Screen. This figure shows the PREDIVE - AIR screen, displaying dive type (AIR), units, water type (FRESH), and potentially altitude/PCF icons.

Before every dive, it is advisable to enter Set Dive mode and check all parameter settings.

DIVE - AIR: "NO-DECOMPRESSION" DIVE

When the diver descends below 1.2 meters (4 ft), Nemo Wide automatically switches to Dive Mode and displays dive data. If this mode persists for over 20 seconds, Nemo Wide begins recording dive details in the Log Book memory.

The following details are displayed (Fig. 12):

Fig. 12: DIVE - AIR "NO-DECOMPRESSION" Screen. This figure shows the DIVE - AIR: "NO-DECOMPRESSION" DIVE screen, displaying depth, no-deco time remaining, and icons.

The display bar shows:

Button operations in this mode:

Fig. 13: Deep Stop Display during Ascent. This figure shows the display during ascent, indicating a "deep stop" requirement.

DIVE - AIR: "DECOMPRESSION STOP" DIVE

If the diver does not ascend when residual time expires, Nemo Wide switches to "decompression stop" mode, indicated by "deco" message and an audible alarm.

Data displayed in this mode (Fig. 14):

Fig. 14: DIVE - AIR "DECOMPRESSION STOP" Screen. This figure shows the DIVE - AIR: "DECOMPRESSION STOP" DIVE screen, displaying depth, deco stop depth/duration, and icons.

Button operations in this mode:

When no-decompression time remaining is one minute, an audible alarm sounds, indicating the diver is about to exceed limits.

TIME TO SURFACE (ASC TIME)

Ascent time is the sum of: duration of decompression stops, time to ascend at 10 m/min (32 ft/min), and any deep stops.

DECOMPRESSION STOPS

Nemo Wide monitors decompression stops. Two icons graphically indicate required diver behavior (Fig. 15):

Fig. 15: Decompression Stop Indicators. This figure illustrates decompression stop indicators: two triangles for correct depth, upward triangle for below depth, downward triangle for above depth.

When omitted deco stop alarms trigger, desaturation of tissue compartments halts and resumes only when the diver returns to the correct stop depth.

If the decompression stop depth is exceeded by more than 30 cm (11 inches), the "downward triangle" icon flashes. If it exceeds 1m (3 ft), it flashes continuously and an audible alarm sounds. These warnings remain active until the diver returns to the correct depth.

Never ascend above the correct decompression stop depth.

If deco-stop overshoot exceeds one meter and lasts over three minutes, the computer switches to "Omitted Stop" mode, and the corresponding icon appears. In this case, Nemo Wide will only function as a depth gauge and timer (BT mode) for subsequent dives and will display errors from the preceding dive.

DEEP STOPS

To minimize critical bubble seed formation during decompression dives or dives near the no-deco limit, Nemo Wide prompts for one-minute deep stops at different depths based on the dive profile. A "deep stop" icon is displayed when conditions exist (Fig. 16).

Fig. 16: Deep Stop Icon. This figure shows the "DEEP STOP" icon and related information during a dive.

This display aids in planning deep stops during ascent. When approaching a deep stop, Nemo Wide sounds an audible alarm and displays "DEEP STOP". A countdown indicates remaining time for the DEEP STOP (Fig. 17). Multiple deep stops may occur depending on the dive profile.

Fig. 17: Deep Stop Countdown. This figure shows the countdown for a DEEP STOP.

SAFETY STOP

If maximum dive depth exceeds 10 meters, a "Safety Stop" is activated during ascent. Nemo Wide suggests a 3-minute safety stop between 2.5 and 6 m (8-19 ft), displaying "SAFEST". A timer indicates time needed to complete the stop (Fig. 19).

Fig. 19: Safety Stop Display. This figure shows the SAFETY STOP screen, displaying "SAFEST" and a timer.

If the diver moves outside the specified depth range, the safety stop timer halts. When the diver re-enters the correct range, the timer resumes. If the diver returns below 10 m (32 ft), the timer restarts from scratch. For decompression-stop dives, the safety stop adds 3 minutes to the 3 m (10 ft) decompression stop.

ASCENT

A rapid ascent increases the risk of decompression sickness.

Disabling the "Stop" on uncontrolled ascent should only be done by highly experienced divers who take full responsibility for the consequences.

As the diver ascends, Nemo Wide activates the ascent rate control algorithm, displaying the value in m/min (ft/min) and graphically (Fig. 18).

Fig. 18: Ascent Rate Display. This figure illustrates the ASCENT screen, showing ascent rate in m/min and graphically.

If the diver's speed exceeds 12 m/min (39 ft/min), "Slow" message appears, and an audible alarm sounds until the rate returns below the limit. An "Uncontrolled Ascent" is monitored if the diver exceeds the maximum rate for at least two-thirds of the depth where the alarm triggered (for depths below 12 m).

In case of an uncontrolled ascent, upon surfacing, Nemo Wide disables AIR and EAN Dive Modes, functioning only as a timer and depth gauge (BOTTOM TIME). Other modes remain active. The "Stop" on uncontrolled ascent function can be disabled in Set Dive mode.

SURFACING - AIR

When measured depth is less than 1 m (3 ft), Nemo Wide considers the dive suspended ("Surfacing") and halts the dive timer. If the diver does not return below 1.2 m (4 ft) within 3 minutes, the dive is considered finished and data recorded. If the diver re-descends within 3 minutes, the dive continues.

Data displayed in Surface mode (Fig. 20):

Fig. 20: SURFACING - AIR Screen. This figure shows the SURFACING - AIR screen, displaying dive duration and maximum depth.

Buttons are disabled in surfacing mode.

If an AIR or EAN dive ends with an uncontrolled ascent or an omitted stop, Nemo Wide restricts Dive - AIR and Dive - EAN modes for 24 hours, allowing only BOTTOM TIME operation. The relevant error icons are displayed.

SURFACE MODE - AIR

When the dive is finished, Nemo Wide switches to Time mode, showing desaturation time and the "NO FLY" icon (Fig. 21).

Fig. 21: SURFACE MODE - AIR Screen. This figure shows the SURFACE MODE - AIR screen, displaying desaturation time ("FLY"), and "NO FLY" indicator.

Nemo Wide also displays icons for errors made during the dive (omitted stop, uncontrolled ascent). Use +/- keys to view no-fly time, time, date, and temperature. ESC returns to the main menu.

Do not fly or travel to high altitudes while the no-fly indication remains active.

DIVE - EAN

Oxygen-rich mixes (EAN) extend no-decompression limits compared to air but expose divers to oxygen toxicity hazards. Nemo Wide computes oxygen toxicity based on dive time, depth, and oxygen percentage, providing safe exposure limits.

To perform an EAN dive, select EAN mode in Set Dive - Mode. Nemo Wide handles EAN dives similarly to compressed air dives, with differences in parameter settings and display.

It is essential to correctly set the oxygen percentage to ensure accurate readouts of no decompression time remaining, decompression stop times, and alarms for exceeding maximum permitted PPO2.

Before the dive, correctly set all EAN dive parameters: oxygen percentage and maximum partial pressure limit, which determine maximum dive depth.

The use of oxygen-rich mixes carries different hazards than compressed air. Divers must be aware of these risks and how to avoid them.

Nemo Wide should only be used for diving with oxygen-rich mixes (EAN) by divers with the necessary certification. Lack of appropriate training may result in serious injury.

Read the compressed air diving section before reading the EAN section.

MONITORING OF THE GENERAL DIVE PARAMETERS

Oxygen Partial Pressure

When PPO2 exceeds the entered limit (1.2 to 1.6 ATM), Nemo Wide triggers an alarm: blinking depth indicator and audible alarm. The alarm persists until PPO2 returns within the programmed limit.

When the max PPO2 alarm sounds, ascend immediately until the alarm turns off.

Effects on Central Nervous System

Oxygen toxicity exposure is monitored via CNS (Central System Calculation) based on recommended exposure limits. Toxicity is expressed as a percentage (0-100%). An alarm triggers if it exceeds 75%, indicated by blinking.

PREDIVE - EAN

This mode is active until the diver goes below 1.2 meters (4 ft). Details displayed (Fig. 22):

Fig. 22: PREDIVE - EAN Screen. This figure shows the PREDIVE - EAN screen, displaying dive type (EAN), %O2, and other relevant icons.

If Predive Mode persists for over 10 minutes without button presses, Nemo Wide reverts to Time mode.

Before every dive, check all parameter settings, especially EAN parameters.

Always put Nemo Wide into Predive mode and ensure it is switched on early in your dive.

DIVE - EAN: "NO-DECOMPRESSION" DIVE

When the diver descends below 1.2 meters (4 ft), Nemo Wide switches to Dive Mode. If this persists for over 20 seconds, dive details are recorded in the Log Book.

Details displayed (Fig. 23):

Fig. 23: DIVE - EAN "NO-DECOMPRESSION" Screen. This figure shows the DIVE - EAN: "NO-DECOMPRESSION" DIVE screen, displaying depth, no-deco time, %O2, and %CNS.

Scrolling items is identical to diving with compressed air.

Button functions are identical to diving with compressed air.

Button operations in this mode:

DIVE - EAN "DECOMPRESSION STOP" DIVE

Data displayed for decompression-stop diving with EAN (Fig. 24):

Fig. 24: DIVE - EAN "DECOMPRESSION STOP" Screen. This figure shows the DIVE - EAN "DECOMPRESSION STOP" DIVE screen, displaying depth, deco stop details, and %CNS.

Button operations in this mode:

To fully understand EAN decompression, read the section for compressed-air deco stop dives.

If you completed an EAN dive and wish to do a repetitive dive with air, set "EAN" with O2 at 21% to keep %CNS calculation active.

SURFACING - EAN

When measured depth is less than 1 m (3 ft), Nemo Wide considers the dive suspended and halts the dive timer. If the diver does not return below 1.5 m (5 ft) within 3 minutes, the dive is considered finished and data recorded. If the diver re-descends within 3 minutes, the dive continues.

Data displayed in Surface mode (Fig. 25):

Fig. 25: SURFACING - EAN Screen. This figure shows the SURFACING - EAN screen, displaying dive duration.

SURFACE MODE - EAN

Surface - EAN mode displays the same data as Surface - AIR, with the addition of the % CNS value (Fig. 26).

Fig. 26: SURFACE MODE - EAN Screen. This figure shows the SURFACE MODE - EAN screen, similar to Surface Mode - AIR but with %CNS.

DIVE - BOTTOM TIME (GAUGE)

In this mode, Nemo Wide functions as an electronic timer and depth gauge but performs no calculations for no-deco limits or deco-stop times. The user is responsible for planning these limits.

Details in Predive and Surfacing modes are as described for air/EAN dives. Dive mode data (Fig. 27):

Fig. 27: DIVE - BOTTOM TIME Screen. This figure shows the DIVE - BOTTOM TIME screen, displaying dive time, depth, ascent rate, temperature.

Button operations in this mode:

Always put Nemo Wide into Predive mode and ensure it is switched on early in your dive.

After a dive in "BT" mode, transition to "AIR" or "EAN" is disabled for 24 hours (this lockout can be disabled by clearing residual nitrogen memory in Set Dive - Data).

This option is intended only for highly experienced divers. Clearing residual nitrogen memory prevents use for repetitive dives. Do not dive within 24 hours of clearing memory if you have already dived.

SURFACE MODE - BOTTOM TIME

Desaturation time and delay before flying are displayed as in Air or EAN dives.

BOTTOM TIME WITH BEHAVIOR ERROR

Errors like Uncontrolled Ascent or Omitted Deco Stop can occur. Nemo Wide inhibits Dive - AIR and Dive - EAN modes for 24 hours, allowing only BOTTOM TIME operation and displaying the error. Corresponding error icons are shown.

Planning: Scrolling of No Decompression Limits

This function allows scrolling through no decompression limits, considering current residual saturation from previous dives. Times account for all Set Dive parameters (Mode, Altitude, PCF, and for EAN, O2 percentage and PPO2).

To enter Plan mode, scroll to "PLANNING" in the Main Menu and press ENTER.

Repeatedly press + to increase depth by 3 meters (up to 48m/157ft). Press - to decrease depth by 3 meters (down to 0m/0ft).

For each depth, the display shows the corresponding no decompression time in minutes. If EAN mode is enabled, the oxygen percentage is also shown (Fig. 28).

Fig. 28: Planning Screen. This figure shows the PLANNING screen, displaying depth and no-decompression time, with %O2 if EAN is selected.

The maximum depth allowed varies with %O2 and PPO2. ESC returns to the main menu.

The Plan function is active only after selecting AIR or EAN mode in Set Dive.

Log Book

Log Book mode displays details of past dives. Dives are organized sequentially (1=most recent). Maximum capacity is approx. 40 hours of diving with profile points at 20-second intervals.

To enter Log Book mode, scroll to "LOGBOOK" in the Main Menu and press ENTER.

Log Book Summary

The first page shows a summary history of dives (Fig. 29):

Fig. 29: Log Book Summary. This figure shows the Log Book summary screen, displaying max depth, total dive time, total dives, coldest temperature.

Pressing ENTER displays individual dives.

For extensive data storage and viewing, use a PC with a USB interface (optional).

Log Book - Dive #

Dive details are numbered sequentially in reverse chronological order. Displayed data (Fig. 30):

Fig. 30: Log Book Dive Entry. This figure shows a specific dive log entry, displaying dive type, number, date, and time.

Use +/- buttons to advance between dives. ESC returns to the preceding menu. ENTER views details of the selected dive.

Log Book - Tech Data

This mode displays summary details of each dive (Fig. 31):

Fig. 31: Log Book Tech Data. This figure shows the Log Book TECH DATA screen, summarizing dive details like type, max depth, ascent rate, and icons.

Use - button to view on the display bar: % O2 (EAN only), % CNS maximum (EAN only), lowest logged temperature, duration of the dive, or type of water (Salt, Fresh).

ENTER button reviews the dive profile.

For BOTTOM TIME mode dives, uncontrolled ascent and omitted deco stop icons refer to errors from the preceding dive.

Log Book - Profile

In Profile mode, review dive profile points at 20-second intervals. Press + once or hold to scroll automatically. Details displayed (Fig. 32):

Fig. 32: Log Book Profile. This figure shows the Log Book PROFILE screen, displaying current depth, fastest ascent rate, and dive time.

ESC button returns to the preceding menu. ENTER is disabled.

PC Mode

Using a special interface unit and Windows software, transfer data from Nemo Wide to a PC. Nemo Wide and PC communicate via a special USB interface module (optional).

To transfer data: select "PC" in the display bar using +/- buttons, then press ENTER. Position Nemo Wide display-up and plug in the interface.

More information is available in the dedicated software. Visit www.mares.com for software updates.

OFF Mode

Access OFF mode from the main menu by pressing ESC. In this menu, use +/- buttons to view information (Fig. 33):

Fig. 33: OFF Mode Display. This figure shows the OFF MODE screen, displaying serial number, battery level, software version, and battery replacement count.

Press ENTER to turn off the computer. Press ESC to return to the Main Menu.

When battery charge status is displayed, pressing ENTER runs an instant battery check.

FAQ (Frequently Asked Questions)

Maintenance

After diving in seawater, rinse Nemo Wide with fresh water to remove salt residues. Do not use chemical products; rinse under running water.

If signs of moisture are observed inside the mineral glass, take your Nemo Wide to an authorized Mares service center immediately. Mares is not responsible for water seepage resulting from errors in battery replacement.

The mineral glass is not exempt from scratches resulting from improper use.

Replacing the Battery

Replacing the battery is a delicate operation requiring close attention. Visit an authorized Mares center. Mares declines responsibility for any damage caused by battery replacement.

Unscrew the waterproof cover on the back of the Nemo Wide counter-clockwise (Fig. 34).

Fig. 34: Unscrewing Battery Cover. This figure shows how to unscrew the battery cover.

Remove the Battery

Do not discard the old battery in the environment. Mares urges the use of appropriate separated waste collection services.

Insert a new Lithium 3V CR 2450 battery, ensuring correct polarity.

Inspect the O-ring carefully for damage, tearing, or warping. Replace it with a new O-ring if necessary (Mares spare part Code 44200723).

Position the Gasket in the Cover

Set the cover on the Nemo Wide, ensuring icons are aligned correctly (Fig. 35).

Fig. 35: Positioning Gasket. This figure shows how to position the gasket in the cover.

Turn clockwise, pressing the cover until icons are aligned (Fig. 36).

Fig. 36: Securing Battery Cover. This figure shows how to screw the cover back on.

Strap

Adapt the strap length to your wrist by cutting it along the special grooves (Fig. 37).

Fig. 37: Strap Adjustment. This figure shows how to cut the strap to size.

Technical/Functional Characteristics

Technical Features

*Note: Data based on calculations with average dive length 45 min, 12 months OFF-MODE. Battery life affected by operating temperature; decreases at lower temperatures. Battery life varies with use.

Algorithm

Mechanical Characteristics

Functional Characteristics

Software Upgrade

New functional characteristics for Nemo Wide can be added by updating the software via the USB interface (optional) from the Mares website.

Warranty

Mares products are guaranteed for two years, subject to limitations and conditions:

Validation of the Warranty: The first purchaser must mail the certificate with the vendor's stamp to Mares S.p.A. within 10 days of purchase. Products returned must be sent via the vendor with proof of purchase. Products travel at sender's risk.

Warranty Exclusions:

How to Find the Product Code: Go to the OFF menu (ESC from main menu). The display bar shows the serial number (Fig. 38). Note this number on the warranty certificate and packaging.

Fig. 38: Product Code Display. This figure shows the OFF menu displaying the serial number (product code).

Disposal of the Device

Dispose of this device as electronic waste. Do not throw it away with regular rubbish. Return it to your local Mares dealer.

PDF preview unavailable. Download the PDF instead.

Mares NEMO WIDE-EN Adobe PDF Library 7.0

Related Documents

Preview Mares Puck 4 Dive Computer Instruction Manual
This comprehensive instruction manual guides users through the features, operation, and maintenance of the Mares Puck 4 Dive Computer. It covers diving modes, settings, alarms, multi-gas capabilities, bottom timer mode, technical specifications, care instructions, warranty, and disposal.
Preview Mares QUAD 2 Dive Computer Instruction Manual
Comprehensive instruction manual for the Mares QUAD 2 Dive Computer, covering its features, operation, settings, and safety guidelines for diving.
Preview Mares Quad Ci Color Dive Computer Instruction Manual
This instruction manual provides comprehensive guidance on operating the Mares Quad Ci Color Dive Computer, covering its features, functions, safety warnings, and maintenance for divers.
Preview Mares Quad Ci Color Dive Computer Instruction Manual
Comprehensive instruction manual for the Mares Quad Ci Color Dive Computer, covering operating modes, settings, diving with single and multiple gas mixtures, safety features, maintenance, and technical specifications. Learn to use your Mares Quad Ci for recreational and technical diving.
Preview Mares Sirius Dive Computer Instruction Manual
Comprehensive instruction manual for the Mares Sirius Dive Computer, covering its features, operation, maintenance, and safety guidelines for diving with various gas mixtures.
Preview Mares Puck Air 2 Dive Computer Instruction Manual
Comprehensive instruction manual for the Mares Puck Air 2 Dive Computer, covering operation, settings, diving procedures, maintenance, and technical specifications.
Preview Mares Puck 4 Dive Computer Instruction Manual
Comprehensive instruction manual for the Mares Puck 4 Dive Computer, detailing its features, operation, settings, dive modes, safety warnings, and maintenance for divers.
Preview Mares Quad CI Tauchcomputer: Bedienungsanleitung mit Farbdisplay
Entdecken Sie den Mares Quad CI Tauchcomputer mit Farbdisplay. Diese umfassende Bedienungsanleitung bietet detaillierte Informationen zur Einrichtung, Bedienung und Wartung des Geräts, einschliesslich Funktionen wie Gradient Factors und CEIL-CON Dekompression für ein sicheres Taucherlebnis.