10 MDS SD4 Startup Guide 05-4669A01, Rev. A
Event Codes
When an alarm condition exists, the transceiver creates a code that can
be read on a connected terminal. These codes can be helpful in
resolving many system difficulties. Refer to Table 4 (Page 11) for a
definition of the event codes.
Checking for Alarms—STAT command
To check for alarms, connect a terminal to the radio’s COM1 (diagnos-
tics) connector. See “COM1 CONNECTIONS” on Page 12 for pinout
information.
Enter
STAT on the connected terminal. If no alarms exist, the message
NO ALARMS PRESENT appears on the display.
If an alarm does exist, a two-digit alarm code (00–31) is displayed and
the event is identified as a Major or Minor Alarm. A brief description
of the alarm is also given.
If more than one alarm exists, the word
MORE appears on the screen.
To view additional alarms, press .
Major Alarms vs. Minor Alarms
Major Alarms—report serious conditions that generally indicate a
hardware failure, or other abnormal condition that will prevent (or
seriously hamper) further operation of the transceiver. Major alarms
generally indicate the need for factory repair. Contact your factory
representative for assistance.
Minor Alarms—report conditions that, under most circumstances will
not prevent transceiver operation. This includes out-of-tolerance con-
ditions, baud rate mismatches, etc. The cause of these alarms should
be investigated and corrected to prevent system failure.
ENTER
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