Specifications

500AI

BACKLIGHT FEATURE

In addition to using a high contrast LCD for easy readability in low light con-

ditions, the 500AI Backlight feature evenly and easily illuminates the full dis-

play. Upon activation the Backlight will illuminate the display while the unit

performs its diagnostic check.

To activate the Backlight while on the surface or during a dive, press the Se-

lect (Right) button (Fig. 15). On the surface the display will be illuminated for

10 seconds. While in a dive mode, the display will remain illuminated as long

as the button is depressed, plus 10 seconds after being released. Additional

illumination time can be obtained by pressing the button again.

NOTE: Extensive use of the Backlight reduces estimated bat-

tery life. Also, the Backlight will not activate during a Low

Battery condition or while downloading data to a PC.

AUDIBLE ALARM

One Short Beep = Transition

Emitted after activation and a diagnostic check, prior to Surface Mode.

Fig. 15 - Backlight

140

210

280

350

5000

4000

3000

2000

1000

MAX

BEEP!