User's Manual

05-4819A01, Rev. 08 LCT 450 Installation/Operation Guide 23
Internal Spectrum Analyzer
The radio contains a built-in spectrum analyzer tool (Figure 8) that can
be displayed on a connected PC. The tool is helpful in diagnosing
interference problems on or near your channel frequency.
Access the spectrum analyzer by entering
spectrum at the command
prompt. A display appears showing detected signals on your current
channel.
Optionally, you can specify a frequency at the command prompt to
view the surrounding spectrum of that frequency. To do this, enter
spectrum xxx.xx, where xxx.xx is the frequency in MHz.
As shown in Figure 8, the display creates a received signal strength
indication (RSSI) vs. frequency plot for the frequency and sur-
rounding signals. By analyzing the display, you can determine the
presence of other signals near the transceiver’s operating frequency.
This information can be helpful in troubleshooting interference prob-
lems.
12 Major Receiver time-out. No data received within the
specified receiver time-out time.
13 Minor A Transmitter timeout was detected. The radio
stayed keyed longer than the duration specified by
the TOT command.
17 Minor A data parity fault has been detected on the
PAYLOAD port. This usually indicates a parity
setting mismatch between the radio and the
customer equipment.
18 Minor A data framing error has been detected on the
PAYLOAD port. This may indicate a baud rate
mismatch between the radio and the customer
equipment.
26 Minor The DC input voltage is out-of-tolerance. If the
voltage is too far out of tolerance, operation may fail.
31 Minor The transceiver’s internal temperature is
approaching an out-of-tolerance condition. If the
temperature drifts outside of the recommended
operating range, system operation may fail.
Table 3. Event Codes (Cont’d)
Event
Code
Event
Class Description