28
GEO 4.0 OPERATING MANUAL
© Pelagic, 2019
Doc. No. 12-5670-r01 (2/27/18)
SET F (GAS MIX)
Within this submenu you can change the two available gas mixes from air to any nitrox mix between 21 - 100 FO2 (% O2), PO2 Alarm settings, and
whether to use 1 or 2 gases. Nitrox mixes are displayed with their corresponding MOD (Maximum Operating Depth) and the current PO2 Alarm
setting for the selected gas. Default settings are FO2 Air with no PO2 alarm value for Gas 1, and OFF for Gas 2. Settings revert to the defaults when
24 hours elapse without conducting a dive. If you set a nitrox mix value for any gas the PO2 alarm value will default to 1.60 until changed.
NOTE: Once either gas is set for nitrox, the other gas that is set for AIR will automatically be set to 21%. The AIR option will not
be displayed as an FO2 setting until 24 hours elapse after the last dive.
NOTE: When FO2 is set for AIR, oxygen related data (such as PO2, % O2) will not be displayed at any time during the dive, on
the surface, or in Plan Mode. Though these oxygen values will be tracked internally for use in any subsequent nitrox dives.
NOTE: Gas 1 cannot be set to OFF.
NOTE: The PO2 alarm value is set in the Set Alarms Menu.
SET GAS 1 FO
2
SELECT
ADV
.
LIGHT
MODE
decrease
FO
2
value
increase
FO
2
value
save setting,
to Set Gas 1
PO
2
alarm
SELECT
ADV
.
LIGHT
MODE
to Set Gas 1
SET FO
2
LEAD-IN
MOD, blank if AIR
FO
2
(O
2
%),
(flashing)
PO2 Alarm value,
blank if AIR
SET GAS 2 FO
2
SELECT
ADV
.
LIGHT
MODE
decrease
FO
2
value
increase
FO
2
value
save setting,
to Set Gas 2
PO
2
alarm
MOD, blank if AIR
FO
2
(O
2
%)
(flashing)
PO2 Alarm value,
blank if AIR
SET GAS 1 PO
2
SELECT
ADV
.
LIGHT
MODE
decrease
FO
2
value
increase
PO
2
value
save setting,
to Set Gas 2
FO
2
MOD, blank if AIR
FO
2
(O
2
%)
PO2 Alarm value
(flashing), blank if AIR
SET GAS 2 PO
2
SELECT
ADV
.
LIGHT
MODE
decrease
FO
2
value
increase
PO
2
value
to Set FO
2
Lead-in
MOD, blank if AIR
FO
2
(O
2
%)
PO2 Alarm value
(flashing), blank if
AIR
Summary of Contents for GEO 4.0
Page 6: ...6 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 GETTING STARTED...
Page 12: ...12 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 WATCH MODE...
Page 19: ...19 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 DIVE FEATURES...
Page 24: ...24 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 NORM SURFACE MODE...
Page 36: ...36 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 NORM DIVE MODE...
Page 45: ...45 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 GAUGE MODE...
Page 49: ...49 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 FREE MODE...
Page 55: ...55 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 REFERENCE...
Page 59: ...59 GEO 4 0 OPERATING MANUAL Pelagic 2019 Doc No 12 5670 r01 2 27 18 TECHNICAL DATA...