Microwave Data Systems EL805, Руководство по установке и эксплуатации

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40 MDS TransNET 900 I&O Guide MDS 05-2708A01, Rev. B
7.1 LED Indicators
The LED status indicators are an important troubleshooting tool and should
be checked whenever a problem is suspected.
Table 12 describes the function
of each status LED.
7.2 Alarm Codes
When an alarm condition exists, the transceiver creates an alarm code. These
codes can be very helpful in resolving many system difficulties.
Checking for Alarms—STAT command
To check for the presence of alarms, enter
STAT
. If no alarms exist, the
message
NO ALARMS PRESENT
appears at the top of the display.
If an alarm does exist, a two-digit alarm code (00–31) is displayed, and it is
identified as a major or minor alarm. A brief description of the alarm is also
given. Alarm codes and their meanings are listed in
Table 13 .
If more than one alarm exists, the word
MORE
appears at the bottom of the
screen; additional alarms can be viewed by pressing .
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.
With the exception of alarm code 00 (network address not programmed),
major alarms generally indicate the need for factory repair. Contact MDS for
further assistance.
Table 12. LED indicator descriptions
Name Description
PWR
• Continuous—Power is applied to the radio; no problems detected
• Flashing (5 times-per-second)—Fault indication. See Section 7.0,
TROUBLESHOOTING
• Off—Radio is unpowered or in Sleep mode
SYNC Continuous—Radio is receiving/sending synchronization frames
On within 10 seconds of power-up under normal conditions
TXD Transmit data activity on the DB-9 DATA interface connector
RXD Receive data activity on the DB-9 DATA interface connector
PWR SYNC TXD RXD
ENTER