MDS 05-3447A01, Rev. F
MDS 1710A/C and MDS 2710A/C/D
31
• The correct interface between the transceiver and the connected
data equipment (correct cable wiring, proper data format, timing,
etc.)
6.1 LED Indicators
The LED status indicators are an important troubleshooting tool and
should be checked whenever a problem is suspected.
Table 5 on page 16
describes the function of each status LED.
6.2 Event Codes
When an alarm condition exists, the transceiver creates a code that can
be read on an HHT connected to the
DIAG.
port. These codes can be very
helpful in resolving many system difficulties. Refer to
Table 8
for a def-
inition of the event codes.
Checking for Alarms—STAT command
To check for alarms, enter
STAT
on the HHT. If no alarms exist, the mes-
sage
NO ALARMS PRESENT
appears at the top of the display (
Figure 11
).
Invisible place holder
Figure 11. HHT Display in Response to STAT Command
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 at the bottom of
the screen. To view additional alarms, press
.
Major Alarms vs. Minor Alarms
Major Alarms—report serious conditions that generally indicate a hard-
ware failure, or other abnormal condition that will prevent (or seriously
degrade) further operation of the transceiver. Major alarms generally
indicate the need for factory repair. Contact MDS for further assistance.
ENTER
