Oceanic Watch / Dive Computer GEO - Manual (Page 59)

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 Depressing and holding the M button for 2 seconds or if no button is pressed
for a period of 2 minutes operation will revert to the NORM or GAUG SURF
MAIN screen.
NOTE: The Serial Number and Firmware Revision will be
requested in the event that you contact Oceanic regarding the
GEO. Enter them in the Records section provided in the back of
this Manual.
NORM PLAN MODE
Oceanic strongly recommends that you review the PDPS (Pre Dive
Planning Sequence) prior to every NORM dive to help you Plan your
dive as required to avoid exceeding no decompression or oxygen
exposure limits. This is especially important for repetitive dives when the PDPS
indicates adjusted dive times that are available for the next dive, based on
residual nitrogen or oxygen accumulation (whichever is in control) following the
last dive and surface interval.
NOTE: Calculated No Decompression Dive Times in PLAN
MODE are based on the FO2 setting selected.
 Pressing and releasing the A button momentarily (< 2 seconds) 1 time while
the NORM SURF MAIN screen is displayed will access the PLAN MODE
LEAD-IN screen.
NORM SURF > PLAN LEAD-IN