Operation Manual

ACTIVATION

To Activate the XR1 - press and release the Button.

 Upon manual activation, the unit will enter Diagnostic Mode

(Fig. 10), displaying all segments of the LCD as 8's, followed by

dashes, then a countdown from 9 to 0.

 Diagnostic Mode checks the display and battery voltage to en-

sure that everything is within tolerance and functioning prop-

erly.

 It will also check the ambient barometric pressure, and calibrate

its present Depth as zero. At elevations of 2,000 feet (610

meters) or higher, it will adjust its Depth readings and No De-

compression Limits for that elevation.

WARNING: If it is manually activated at elevations

higher than 14,000 feet (4,270 meters), it will per-

form a diagnostic check followed by immediate

shutdown.

To view a screen that displays the unit's Serial Number and firm-

ware revision level, hold the button depressed as the Diagnostic

countdown reaches 00. The Serial Number screen appears (Fig. 8)

as long as the button is depressed. Upon releasing the button, the

unit shuts Off. Press and release the button to reactivate the unit

and enter Surface Mode.

Fig. 10 - Diagnostic Mode

Fig. 11 - Serial Number