User's Manual

12 MDS SD4 Startup Guide 05-4669A01, Rev. B
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.
18 Minor A data framing error has been detected on the
COM2 INTERFACE connector. This may indicate a
baud rate mismatch between the radio and the RTU.
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 4. Event Codes (Cont’d)
Event
Code
Event
Class Description