Oceanic Veo 4.0 setup guide

Also covers: Veo 4, Oceanic Veo 4.0, VEO 4.0

Two-button (ADV, SEL) dive computer. Dive (Air/Nitrox, up to 3 gases), Gauge and Free modes, a choice of DSAT or Z+ algorithm and Bluetooth. Gas settings go back to Air after 24 hours without a dive. User-replaceable CR2450 battery.

Buttons

Button	Where	What it does
`ADV`	front, below the display, left	Advance: next menu item / ALT screen, change a value (hold to scroll fast)
`SEL`	front, below the display, right	Select / save and step forward; backlight; silence an alarm (hold to step back)

Turn on / wake

Press and release ADV or SEL to switch it on. It also turns on when its metal contacts get wet, unless Wet Activation is OFF.
PressADV
Manual p. 7
It checks the display and battery, zeroes the depth, then shows the Dive surface screen.
Manual p. 7
Press ADV to step through the menu (ALT screens, PLAN, LOG, SET F, SET A, SET U, SET T, SET M…). Press SEL to open an item.
PressADVPressSEL
Manual p. 17
To go straight back to the main screen, hold ADV and SEL together.
Hold togetherADVHold togetherSEL
Manual p. 10
There is no off button. After 10 minutes without a button press it sleeps; press any button to wake it.
Manual p. 7
It switches off after 2 hours unused. After a dive it stays on (asleep) for 24 hours to count down time to fly.
Manual p. 7

Date and time

Press ADV until SET T appears, then press SEL.
PressADVPressSEL
Manual p. 27
Date format: press ADV to choose M-D or D-M, then SEL.
PressADVPressSEL
Manual p. 27
Hour format: press ADV to choose 12 or 24, then SEL.
PressADVPressSEL
Manual p. 27
Time: press ADV to change the hours and SEL to save, then the same for minutes.
PressADVPressSEL
Manual p. 27
Date: set the year with ADV and save with SEL, then do the same for month and day.
PressADVPressSEL
Manual p. 27

Units (m/ft, °C/°F)

One setting (IMP or MET) changes all units together (p. 23).

Press ADV until SET U appears, then press SEL.
PressADVPressSEL
Manual p. 23
Press SEL to go past Wet Activation to UNITS.
PressSEL
Manual p. 23
Press ADV to choose IMP or MET, then press SEL to save.
PressADVPressSEL
Manual p. 23

Water type (salt/fresh)

Not available on this computer

The manual describes no salt/fresh water setting: Set U lists wet activation, units, deep stop, safety stop, algorithm, conservative factor, Bluetooth, backlight and sampling rate only (pp. 23–27).

Dive mode (Air / Nitrox / Gauge)

Press ADV until SET M appears, then press SEL.
PressADVPressSEL
Manual p. 28
Press ADV to choose divE, GAUGE or FREE, then press SEL to save.
PressADVPressSEL
Manual p. 28
Warning: after a Gauge dive there is no deco or oxygen calculation until a 24-hour surface interval has passed. Do not use GAUGE unless your instructor says so.
Manual p. 28

Nitrox O₂% and ppO₂ limit

Gas settings go back to Gas 1 = Air (Gas 2 and 3 OFF) when 24 hours pass without a dive. After a nitrox dive, Air cannot be chosen again for 24 hours. The text on p. 20 also mentions an Air/EAN screen that the diagram does not show; if it appears, choose EAN with ADV and press SEL.

Press ADV until SET F appears, then press SEL.
PressADVPressSEL
Manual p. 20
Gas 1 O2 %: press ADV to change the value (21–100%); hold ADV to scroll fast. Press SEL to save.
PressADVHoldADVPressSEL
Manual p. 20
Gas 1 PO2 alarm: press ADV to change it (it starts at 1.60 for nitrox), for example to 1.40. The MOD is shown. Press SEL to save.
PressADVPressSEL
Manual p. 20
Gas 2 and Gas 3 screens follow and are OFF by default. Leave them OFF for a single tank and press SEL. Gas 1 cannot be OFF.
PressSEL
Manual p. 20
Check the surface screen: it shows the gas number and AIR or the O2 %.
Manual p. 17

Conservatism / personal setting

Press ADV until SET U appears, then press SEL.
PressADVPressSEL
Manual p. 23
Press SEL to go past each item until ALGORITHM appears. Press ADV to choose DSAT or Z+, then SEL.
PressSELPressADV
Manual p. 25
CONSERVATIVE FACTOR is next: press ADV to choose ON or OFF, then press SEL.
PressADVPressSEL
Manual p. 25
Z+ gives shorter no-deco limits than DSAT. CF ON shortens them further, as if you were 915 m (3,000 ft) higher.
Manual p. 13
The algorithm cannot be changed for 24 hours after a dive unless Desat time has reached 0:00.
Manual p. 25

Altitude

Altitude is detected automatically; there is no manual altitude setting (p. 54).

Nothing to set: it measures air pressure when switched on and adjusts by itself above 916 m (3,001 ft).
Manual p. 54
It corrects depth and no-deco times up to 4,270 m (14,000 ft) and does not work as a dive computer above that.
Manual p. 54
To see the altitude level, press ADV to ALT 2. It shows EL2–EL7, or blank at sea level.
PressADV
Manual p. 17

Audible alarms (depth / time)

Press ADV until SET A appears, then press SEL.
PressADVPressSEL
Manual p. 21
Audible alarm: press ADV to choose ON or OFF, then SEL. Leave it ON.
PressADVPressSEL
Manual p. 21
Depth alarm: press ADV to choose OFF or 10–100 m (30–330 ft), then SEL.
PressADVPressSEL
Manual p. 21
EDT (dive time) alarm: press ADV to choose OFF or 10–180 minutes, then SEL.
PressADVPressSEL
Manual p. 22
TLBG (nitrogen) and DTR (OFF or 5–20 min) alarms follow; set with ADV and save with SEL.
PressADVPressSEL
Manual p. 22
An alarm beeps 10 times and a light on the front flashes. Press SEL to silence it.
PressSEL
Manual p. 15

Reading the log after a dive

Quick look: press ADV once for ALT 1 (last dive: max depth and dive time).
PressADV
Manual p. 17
Full log: press ADV until LOG appears, then press SEL. Press ADV to move to older dives.
PressADVPressSEL
Manual p. 19
Press SEL to open a dive: max depth, dive time, surface interval, altitude, lowest temperature, ascent rate.
PressSEL
Manual p. 19
Nitrox dives have one more page with O2 %, max PO2 and O2 saturation. The log keeps 24 Dive and Gauge dives.
Manual p. 19

Battery

A solid battery icon is a warning: it still works but the backlight is off. Do not dive with a low battery.
Manual p. 14
A flashing battery icon is an alarm: it shuts off after 5 seconds until the battery is replaced.
Manual p. 14
It uses one 3 V CR2450 lithium battery that the user can replace.
Manual p. 53
After a change, switch it on and check all settings before diving.
Manual p. 54

What the main screen shows

On the surface: surface time, time of day, gas number, AIR or the O2 %, and dive number.
Manual p. 17
In a dive: depth, max depth, dive time, gas number and Dive Time Remaining (no-deco or O2 minutes, whichever is shorter).
Manual p. 31
The left bar shows ascent rate. Above 9 m (30 ft) per minute all segments flash with SLO.
Manual p. 13
The right bar (TLBG) shows nitrogen loading. The fifth segment means decompression.
Manual p. 13
Press ADV in a dive for time and temperature, and for nitrox the O2 saturation and PO2.
PressADV
Manual p. 31

Pre-dive check

Tick each item before you get in the water.

Mode is divE (not GAUGE or FREE) unless your instructor says otherwise.
SET F: Gas 1 is AIR or the O2 % of your analysed tank (it resets to Air after 24 h without a dive).
PO2 alarm set as your instructor asks (default for nitrox is 1.60).
Algorithm (DSAT or Z+) and Conservative Factor set as your instructor wants.
Units (IMP or MET) as you are used to.
Audible alarm is ON.
No battery icon on the display.