Oceanic ATOM Operating Manual - page 117

117

NOTE:  If a switch to a new Gas Mix would

expose the diver to a prohibitive PO2 level of

1.60 ATA or greater, the Audible Alarm will

sound, the red LED will flash as a warning, and

the message DONT > SWCH will scroll at the top

of the display (Fig. 107) until acknowledged by

pressing and releasing the S button momentarily

(< 2 seconds).

Due to the possibility that sufficient air may not be available in

the Switch From tank to complete the dive, the Switch to the prohibitive Mix can still be

made.  If the Switch is made to the prohibitive Mix while in No Deco Dive Mode, the High

PO2 Alarm will activate.   If the Switch is made to the prohibitive Mix while in Deco Dive

Mode, the message HIGH > PO2 will replace the DECO message.

Switching of Gas Mixes can only to be performed during the time that a Gas Switch Pre-

view Display is being viewed.  These are accessed from the Main Dive Display.

•  Pressing and releasing the M button momentarily (< 2 seconds) while viewing a Main

Display while in Dive modes will access the GAS 1 Switch Preview Display.

•  The ATOM will revert to the Main Display after 10 seconds of no M button action.

NOTE:  When Switching to a Gas (FO2) associated with a Tank that

does not have an active Transmitter, the graphic ANALOG will be

displayed.  The procedures and displays will be the same without the

Transmitter link icon.

Fig. 107 - Don't Switch Alert