Exploranium GR-135, System Manual, Page: 14 / 80

SAIC Exploranium – GR-135 System Manual page: 14
b) LOADING BATTERIES
To load the batteries, remove the battery back door at the rear of the instrument
by applying a ¼ turn to the door latch. Insert the two rechargeable D-cell
batteries with the "+" to the small brass ring and the “-“ to the spring. The
fabric strip should be placed BEHIND the batteries to aid in their removal (see
fig). Ensure that both batteries are firmly seated, attach the plastic battery
retainer clip properly then re-attach the door. (Be sure that the door is properly
attached)
c) POWER ON
To switch the unit on, CLICK DOWN (towards the user) for at least 2
seconds. The display will come on and show Fig. 1A for a few seconds.
The unit is carrying out internal testing to verify that the units’ components
are functioning correctly during this display.
Fig. 1A
After approx. 3 seconds this display will be replaced by the normal startup
display shown in Fig. 1B and an audio beep will be heard.
If any errors are detected, they are displayed (see Appendix E). If no
errors are found, the display will change to the start up screen (Fig. 4)
shown below after a few seconds
Fig. 1B
MANUAL MODE ACTIVE – shows that the unit is in the MANUAL mode that permits full unit
functionality
d) BACKLITE ON
A BACKLITE option is built into the GR-135 such that the display may be viewed in low light
conditions. BACKLITE can be enabled in the system setup for frequent use or activated manually for
intermittent use. To enable the BACKLITE, be sure that the unit is OFF, then CLICK DOWN
(towards the user) and HOLD the JOYSTICK in this position. After about 3 seconds the display will
be illuminated (BACKLITE switches ON), after which the JOYSTICK may be released. The BACKLITE
will remain active until the unit is powered OFF. The GR-135 has a built-in battery saving feature
such that the BACKLITE will not turn ON if the battery voltage is below 2.2 V. This low voltage
indicates that there is little battery life left so disabling the BACKLITE feature allows the user to use
the remaining battery life optimally.
Note that to turn off the BACKLITE, the unit must be switched OFF then switched ON again with the
normal short click
The BACKLITE feature may be selected to be ON all the time for some applications or for set periods
of time as described in the SETUP section (Section 10) but users should be aware that enabling the
BACKLITE feature reduces battery life by an estimated 50%.
TESTING
EXPLORANIUM
GR-135
The IDENTIFIER
VERSION 109
SER# 2001
MANUAL MODE ACTIVE