Bird Technologies AT-800-Manual - Manual (Page 61)

Maintenance
43
Operational Tests
Power-up
Several tests run at power up. Results are displayed
only if a test fails. The results are displayed to the
right of the test as shown in Figure 13. To display test
screen regardless of results, press any key while press-
ing the ON key at initial power up. If any test fails,
check the troubleshooting section for possible correc-
tion. When displaying the tests as described above, a
stuck key will be indicated.
“Firmware Rev” checks the rev date of the installed
firmware. NVRam, ROM, EEprom, and RAM check
the memory for valid contents. A/D, Tempr, and PLL
check for proper circuit operation. Stuck_keys checks
for any keys that are pressed at power up.
Figure 13 Power-up Test
Battery Test
The battery test checks the output voltage of the bat-
teries. The result is displayed in a simulated analog
meter with the value at the top of the display. The
scale is set from 6-8V. If the voltage is less than 7V,
the batteries should be changed.
Note: The AT-800 will shut off if the bat-
tery is low, but it will maintain full accuracy at
any battery voltage.
Firmware Rev: 10MAR94
NVRam:
Rom:
EEprom:
Ram:
A/D:
Tempr:
PLL:
Stuck Keys: Pass
Pass
Pass
Pass
Pass
Pass
Pass
00000000