MDS TransNET 2400, Руководство по установке и эксплуатации

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46 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D
• Check for errors in the synchronization qualifiers, XPRI and XMAP ,
on corresponding Remote radios.
• Verify
SAF
is enabled at the Master radio.
7.1 LED Indicators
The LED status indicators are an important troubleshooting tool and should
be checked whenever a problem is suspected.
Table 17 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 18 .
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 versus 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.
Table 17. LED indicator descriptions
Name Description
PWR
• Continuous—Power is applied to the radio; no problems detected
• Flashing (5 times-per-second)—Fault indication. See “TROUBLE-
SHOOTING” on Page 45 .
• 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