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MDS 05-4670A01, Rev. E
7.0 TROUBLESHOOTING
Successful troubleshooting of the radio system is not difficult, but it
requires a logical approach. It is best to begin troubleshooting at the
master station, as the rest of the system depends on the master for
polling commands. If the master station has problems, the operation of
the entire network might be compromised.
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 (5 A). Remove primary power to reset.
• Secure cable connections (RF, data and power).
• An efficient and properly aligned antenna system with a received
signal strength of at least –90 dBm (it is possible for a system to
operate with weaker signals, but reliability might be degraded).
• Proper programming of the transceiver's operating parameters
(see Section 6.0, TRANSCEIVER MANAGEMENT on Page
21), especially the TX/RX frequency and MODEM type selec-
tions.
• The correct interface between the transceiver and the connected
data equipment (correct cable wiring, proper data format, timing,
etc.)
7.1 LED Indicators
The LED status indicators are an important troubleshooting tool and
should be checked whenever a problem is suspected. Table 10 on
Page 19 describes the function of each status LED.
7.2 Event Codes
When an alarm condition exists, the transceiver creates a code that can
be read on a connected PC. These codes can be very helpful in resolving
many system difficulties. Refer to Table 14 (Page 41) for a definition of
the event codes.
Checking for Alarms—STAT command
To check for alarms, enter
sage
NO ALARMS PRESENT
If an alarm does exist, a two-digit alarm code (01–31) is shown and the
event is identified as a Major or Minor Alarm. A brief description of the
alarm is also given.
SD Series Reference Manual (x710 Mode)
on the PC. If no alarms exist, the mes-
STAT
appears.
40
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