GE MDS MDS SD4 Series, Startup Manual

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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