SCUBAPRO Galileo 2 (G2) setup guide

Also covers: G2, Galileo 2, SCUBAPRO G2

Three-button colour-screen dive computer (wrist or console) with on-screen button labels, ZH-L16 ADT MB algorithm. Scuba (nitrox, optional multi-gas), Gauge and optional Apnea modes, MB levels, optional air integration, automatic altitude, rechargeable battery.

Buttons

Button	Where	What it does
`Left button`	left of the three buttons; its current function is labelled on screen above it	Time of day: MENU (hold: O2 setting). In menus: ARROW or − . In a dive: BOOK (bookmark).
`Middle button`	middle of the three buttons; labelled on screen	Time of day: LOG (logbook). In menus: ARROW or + . In a dive: MORE (alternate information).
`Right button`	right of the three buttons; labelled on screen	Switches the G2 on. Time of day: LIGHT (hold: compass). In menus: ENTR / ARROW (next field) / SAVE; hold: back one level.

Turn on / wake

Dive mode starts by itself at 0.8 m / 3 ft (p. 10).

Press the right button to switch the G2 on. It cannot be switched on while connected to USB.
PressRight button
Manual p. 11
First start (or after a factory reset): follow the setup screens for language, units and time zone. Use left/middle to choose and right to confirm.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 11
Each button's job is printed on screen above it (for example MENU, LOG, LIGHT). Labels change with the mode.
Manual p. 12
In menus: press ENTR to go in, hold ENTR to go back a level.
PressRight buttonHoldRight button
Manual p. 18
Hold the left and right buttons together to return to the time-of-day screen.
Hold togetherLeft buttonHold togetherRight button
Manual p. 18
From the time-of-day screen, hold left and right together to switch it off. It also switches off after 3 minutes without use.
Hold togetherLeft buttonHold togetherRight button
Manual p. 17

Date and time

On the time-of-day screen, press MENU (left button).
PressLeft button
Manual p. 18
Press the ARROW buttons to reach 7 Clock settings, then press ENTR.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 19
Scroll to 7.2 Time and press ENTR. Here you set the time, time format (24h or AM/PM) and date.
PressMiddle buttonPressRight button
Manual p. 38
Change the value with − and +. Press the right ARROW to go to the next field.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 18
Press SAVE to store. Hold left and right together to return to the time of day.
PressRight buttonHold togetherLeft buttonHold togetherRight button
Manual p. 18
For travel, 7.3 Time zone shifts the shown time by −13 to +14 hours in 15-minute steps.
Manual p. 38

Units (m/ft, °C/°F)

Press MENU, scroll to 9 Personalization and press ENTR.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 43
Scroll to 9.4 Units and press ENTR.
PressMiddle buttonPressRight button
Manual p. 44
Choose the combination of depth, temperature and pressure units with − and +, then press SAVE.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 44
The units apply to the dive screen, logbook, alarm and altitude settings.
Manual p. 44

Water type (salt/fresh)

This setting changes depth in Scuba, Gauge and Apnea modes (p. 24).

Press MENU, go to 2 Dive settings and press ENTR.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 19
Scroll to 2.5 Water type and press ENTR.
PressMiddle buttonPressRight button
Manual p. 23
Choose Salt or Fresh with − and +, then press SAVE.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 24
A wrong setting only changes the shown depth by about 3%; the decompression calculation uses pressure.
Manual p. 31

Dive mode (Air / Nitrox / Gauge)

Changing mode early requires a desaturation reset with code 313; never do this on a computer that will be dived (p. 23, 26).

Press MENU, go to 2 Dive settings, then 2.2 Dive mode and press ENTR.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 23
Choose Scuba, Gauge or Apnea with − and +, then press SAVE. Apnea appears only if enabled in 8.7 Feature upgrade.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 23
If it shows EXIT instead of SAVE, the mode cannot be changed yet: after a Scuba dive you must wait until desaturation is finished.
Manual p. 23
Gauge only shows depth, time and temperature. No decompression, and most warnings and alarms are off.
Manual p. 81
After a Gauge or Apnea dive you cannot switch back to Scuba for 48 hours, and no-fly time is 48 hours.
Manual p. 82
If a deco stop is missed for more than 3 minutes it goes into SOS: no decompression computer for 24 hours.
Manual p. 13

Nitrox O₂% and ppO₂ limit

The manual does not state the factory default for the nitrox reset time; check menu 2.6 so you know whether O2% will return to 21% by itself (p. 24).

On the time-of-day screen, hold the left button to open the O2 setting (or press MENU, then ENTR on 1 O2 setting).
HoldLeft button
Manual p. 12
Set O2% to the analysed tank with − and + (21–100%). The MOD is shown.
PressLeft buttonPressMiddle button
Manual p. 20
Press the right ARROW to move to ppO2max and set it with − and +. The factory setting is 1.40 bar.
PressRight buttonPressLeft buttonPressMiddle button
Manual p. 18
Press SAVE to store.
PressRight button
Manual p. 18
To go back to air automatically: 2 Dive settings » 2.6 Nitrox reset time, 1–48 hours or 'no reset'.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 24
T1 is the gas you start every dive with. For a normal one-tank dive, set only T1.
Manual p. 20

Conservatism / personal setting

Press MENU, go to 2 Dive settings, then 2.1 MB level and press ENTR.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 22
Choose the level with − and +, then press SAVE.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 18
Level 0 is the least conservative and level 9 the most conservative. Higher means more safety margin.
Manual p. 22
If you skip a required MB level stop, the G2 lowers the active MB level by itself.
Manual p. 37
9.5 Workload (heart rate or breathing) can also make the decompression calculation more conservative when you work hard.
Manual p. 45

Altitude

Not available on this computer

Altitude is handled automatically: the G2 checks air pressure every 60 seconds and shows the altitude class and prohibited altitudes with a mountain symbol. Menu 5 Altimeter only shows/adjusts the elevation reading and does not change the altitude class (p. 34, 55).

Audible alarms (depth / time)

In Gauge mode most warnings and alarms are off; max depth and max dive time still work (p. 81).

Press MENU, go to 6 Warning settings and press ENTR.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 34
6.1 Maximum depth: set 5–100 m / 20–330 ft in 1 m / 5 ft steps.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 34
For each warning choose OFF, visual, audible or BOTH. BOTH gives sound and screen message.
PressLeft buttonPressMiddle button
Manual p. 34
6.5 Dive time: set 5–995 minutes. Press SAVE.
PressLeft buttonPressMiddle buttonPressRight button
Manual p. 35
Sound: 2 Dive settings » 2.10 All-silent mode. Leave it OFF (factory setting). ON turns off all audible alarms and needs code 313.
Manual p. 26

Reading the log after a dive

Only dives longer than 2 minutes are stored (p. 73).

On the time-of-day screen, press LOG (middle button).
PressMiddle button
Manual p. 12
You first see dive statistics. Scroll with the ARROW buttons to a dive: number, date, time, max depth and dive time.
PressLeft buttonPressMiddle button
Manual p. 47
Press ENTR to open a dive. Further pages show the profile graphic, more details and any warnings or alarms.
PressRight button
Manual p. 48
Hold ENTR to go back, or hold left and right together to exit.
HoldRight buttonHold togetherLeft buttonHold togetherRight button
Manual p. 18

Battery

Rechargeable Li-ion battery; replacement only at an authorised SCUBAPRO service centre (p. 10).

The battery icon with the charge level is shown above the time of day.
Manual p. 9
'Charge battery!' means the battery is critically low: the G2 will not start a dive. Charge it before diving.
Manual p. 9
To charge, plug the USB cable into the G2 and a USB charger. Charge fully before first use.
Manual p. 8
If deeply discharged, the screen stays blank at first: leave it charging at least 30 minutes without pressing buttons.
Manual p. 8
Battery level is also shown in 8.1 Device information.
Manual p. 39

What the main screen shows

Screen layout can be changed to Light, Classic, Full or Graphical in 9.1 Screen configuration (p. 44).

Light layout (factory default): depth, dive time, tank pressure, no-stop time or remaining bottom time (RBT), O2 mix and a nitrogen bar graph.
Manual p. 74
If deco is needed, the screen switches to Classic and shows the deepest stop, its time and total ascent time.
Manual p. 74
Press MORE (middle) to show more data in one window, such as max depth, temperature, battery level, CNS%.
PressMiddle button
Manual p. 75
Press BOOK (left) to set a bookmark.
PressLeft button
Manual p. 77
Press LIGHT (right) to brighten the display. Hold the right button for the compass.
PressRight buttonHoldRight button
Manual p. 77
After a dive deeper than 10 m / 30 ft, the safety stop timer starts at 5 m / 15 ft.
Manual p. 77

Pre-dive check

Tick each item before you get in the water.

Battery charged; no 'Charge battery!' message.
Dive mode is Scuba (not Gauge or Apnea).
O2% for T1 matches the analysed tank and ppO2max is 1.40 bar or as instructed.
Water type is Salt or Fresh as needed.
MB level is set as your instructor wants.
All-silent mode is OFF so you hear alarms.
If using a transmitter: T1 paired and tank pressure shown (not NO P or ---).
No SOS or NO DIVE symbol on the screen.