User manual

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A sample Diagnostics display is shown below. Typing ‘X’, ‘x’, or [CTRL]-[C] will exit
from Diagnostics and return to the Main Menu. The display can be toggled on and off without
leaving Diagnostics by pressing any other alphanumeric key.
Selection ? 2
Press any key to pause/continue display, <X> to exit.
RTC: 01/28/2002 15:52:54 WDC: 01/28/2002 15:52:53 10.9 Vb 0 mA
RTC: 01/28/2002 15:52:55 WDC: 01/28/2002 15:52:54 10.9 Vb 0 mA
RTC: 01/28/2002 15:52:56 WDC: 01/28/2002 15:52:55 10.9 Vb 0 mA
Figure G-4: Diagnostics
The steady advance of both clocks indicates that they are working. It is not necessary
that the clocks are precisely synchronized, a one second offset is typical. An accurate and
advancing WDC also indicates that the TT8v2 SPI bus, a critical communications link used by
the 68332 CPU to communicate with the watchdog and other devices, is functioning.
The battery voltage provides information about the battery. A reading above 11 V
indicates a new battery. After the initial high readings, the battery voltage will remain near
10.8 V until ~90% of the available energy in the battery has been used.
IMPORTANT
A battery voltage below 10 V indicates that at least 90% of the battery capacity has been used
and should not be used for a deployment. A battery voltage below 7.5 V indicates all available
energy in the battery has been used.
Low battery output voltage triggers operator warning messages. If the output of the
lithium battery is below 10.0 V, a caution message suggesting replacing the battery before
deploying the system will be displayed during the exit from Diagnostics.
Battery voltage is abnormally low. Check/replace
main battery pack before deploying system.
Press any key to continue.
Figure G-5: Low Battery Voltage
G-7