TXLEVEL [
–
20 to +6, AUTO]
TX Audio Input Level
The
TXLEVEL command
selects or displays the transmit audio input level
expected on Pin 9 of the
DATA INTERFACE
’
s DB-25 connector from an
external modem present on Pin 11 of the
DATA INTERFACE
’
s DB-25
connector. This function is used in
MODEM NONE
mode with analog
audio.
For optimum performance, set this command to match the external
modem level. For example,
TXLEVEL
–
10
.
TXLEVEL AUTO
also available.
This setting directly affects the TX Deviation. (Default:
–
10 dBm).
UNIT [10000...65000]
Unit Address
The unit address is the radio
’
s unique identity for the network
’
s diag-
nostic activities. The default number is programmed by the factory to
the last four digits of the serial number.
5.0
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 can 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 (4A). Remove primary power to reset.
•
Secure connections (RF, data and 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 will be
degraded).
•
Proper programming of the transceiver
’
s operating parameters
(see
Section 4.0, TRANSCEIVER PROGRAMMING
on
Page 15
).
•
The correct interface between the transceiver and the connected
data equipment (correct cable wiring, proper data format, timing,
and so on).
5.1 LED Indicators
The LED status indicators are an important troubleshooting tool and
should be checked whenever a problem is suspected.
Table 7 on Page 14
describes the function of each status LED.
32 05-3305A01, Rev. E
Summary of Contents for 1710 Series
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