Operation Manual

Set Mode Access Timing

While in Surface Mode, press Both buttons simultaneously and

hold -

• after 2 seconds, SET: 1 appears (Fig. 21)

• after 2 more seconds, SET: 2 appears (Fig. 22)

• Access is gained by releasing the buttons during the 2

second window in which SET: 1 or SET: 2 appears, then

pressing the Front (Advance) button.

• If the buttons are held longer, and SET 1 and 2 are both

bypassed, the unit will go to Simulator (Demo) Mode which is

described on page 75.

• While in the Set Mode, if neither button is pressed during a 2

minute period, the unit will revert to Surface Mode.

ENTERING SETTINGS -SET MODE #1

TO SET - FO2 (while in the Surface Mode)

Factory set for AIR, FO2 can also be set to values between 21

and 50% in increments of 1%.

• Press Both buttons simultaneously, release when SET: 1

appears (2 seconds).

• Press and release the Front (Advance) button, FO2 appears

with the set point value flashing (Fig. 23).

Fig. 23 - Set FO2

Fig. 21 - Set 1

ATR

Fig. 22 - Set 2

ATR