32
MDS 4710B/9710B I/O Guide
MDS 05-3316A01, Rev. E
It is good practice to start by checking the simple things. For proper
operation, all radios in the network must meet these basic requirements:
• Adequate and stable primary power. The radio contains an inter-
nal self-resetting fuse (4A). Remove primary power to reset.
• Secure connections (RF, data & power)
• An efficient and properly aligned antenna system with a good
received signal strength of at least -90 dBm. (It is possible for a
system to operate with weaker signals, but reliability may be
degraded.)
• Proper programming of the transceiver’s operating parameters
(see 4.0 TRANSCEIVER PROGRAMMING).
• The correct interface between the transceiver and the connected
data equipment (correct cable wiring, proper data format, timing,
etc.)
6.1 LED Status Indicators
The LED status indicators are an important troubleshooting tool and
should be checked whenever a problem is suspected. Table 6 on page 13
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
DIAGNOSTICS
port. These codes can
be very helpful in resolving many system difficulties. To check for the
presence of alarms, enter
STAT
on the connected HHT. Refer to Table 11
for a definition 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 13).
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