Comtech EF Data DMD1050TS, Installation And Operation Manual

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DMD1050TS Satellite Modem Board
Revision 1
Web Browser 7–47 MN-DMD1050TS
7.7.4 Monitor Menu
The Monitor Menu has the following submenus:
•
VOLTAGES
•
ETH LINK STATUS
•
EVENT
•
CNC
7.7.4.1 Monitor | Voltages Page
Figure 7-27. Monitor | Voltages Page Example
Monitor | Voltages Page
Rx Offset Frequency
(Hz)
Read only, this shows the received carrier frequency offset
as measured by the modem.
Rx Input Level
(dBm)
Read only, this shows the estimated receive signal level as
seen by the Demodulator.
Eb/No (dB) Read only, this shows the estimated Eb/No as seen by the
demodulator.
Raw BER Read only, this shows the estimated channel error rate
(before decoding) measured by the modem.
Corrected BER Read only, this shows an estimated corrected bit error rate
of the modem. Depending on the symbol rate the modem is
running, the high-end performance scale will vary (10 E
-9
,
10
-10
or 10
-11
). At some symbol rates, a better-than-scale
reading shows as 0.0 x 10
-00
. At other symbol rates, it
shows as E**. In both cases, they mean performance is
better than the scale upper limit.
Rx Buffer Level
(Fill %)
•
0 – 100% Read only, this shows the status of the Doppler Buffer.
Rx Bit Errors
Read only, this shows the error count from the Viterbi
Decoder.
AGC Voltage
(Volts)
Monitored AGC Value for use in external equipment, such
as radios.