User's Manual

18 LCT 450 Installation/Operation Guide 05-4819A01, Rev. 08
Over-Temperature Check
If the transmitter is approaching an out-of-tolerance temperature con-
dition, an error code is issued (see Table 3) and the
PWR lamp will
flash. Further operation may be inhibited. Over-temperature condi-
tions should be investigated and resolved before further use of the
radio.
To read the actual internal temperature of the radio (in degrees Cel-
sius), the
TEMP command may be issued from a PC. Excessive temper-
atures may be caused by inadequate ventilation of the transceiver case,
or operating the unit beyond its rated duty cycle (see “SPECIFICA-
TIONS” on Page 26).
Test Mode Commands
The following commands may be used by a technician to test the radio
or to make advanced setting changes during installation and mainte-
nance activities.
BW [xxxxx]
Channel Bandwidth
This command displays the current bandwidth or sets the modem
bandwidth for channel 0. This command also sets the appropriate devi-
ation for this bandwidth.
CHAN [0-8, ALL]
[RXFREQ xxx.xxxx] (MHz)
[TXFREQ xxx.xxxx] (MHz)
[PWR [5, 20, 25, 30] (Watts)
[BW [12.5, 25] (kHz)
Channel Mods...
If only the first argument is given, then it displays the channel(s)
parameters. If a third (or greater) argument is given, then that channel
with have its parameters changed.