Comtech EF Data CDM-Qx, Installation And Operation Manual

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CDM-Qx Satellite Modem Revision 6
Front Panel Operation MN/CDMQx.IOM
Selecting
BERT-Mon
displays:
BERT Monitor: Errs=0000253
BER=8.5E-07
If BERT monitor is turned ON, results are being displayed in bit errors and average BER.
If it displays
BER=SyncLoss
that means there was a loss of pattern synchronization. If it
displays
BER=No Sync
, that means pattern synchronization is not achieved. When the
BERT monitor is sync, the BER displays a value (e.g. BER=8.5E-07).
Selecting
BERT-Control
displays:
BERT Control: 10E-3Err=OFF
Restart=NO SyncThres=>256
The
10E-3Err
control resides at the Tx. This generates an average BER=1.0E-03 once
monitored at the Rx side. The
Restart
control is to reset the BERT monitor (Rx side) for
a fresh start of BER measurement. The
SyncThres
control is the synchronization loss
threshold as defined:
a.
>256
= 256 bit errors counted in less than 1000 bits o data
b.
low
= 100 bit errors in less than 1000 bits of data
c.
med
= 250 bit errors in less than 1000 bits of data
d.
high
= 20,000 bit errors in less than 100,000 bits of data
•
Spec-Analyzer Submenu
Selecting
Spec-Analyzer
displays:
Spectrum Analyzer:
Mode Config ( ◄ ► , ENT)
Selecting
Mode
displays:
Spectrum Analyzer Mode:
Off On ( ◄ ► , ENT)
This menu allows the user to turn ON or OFF the engine of the spectrum analyzer. If
spectrum analyzer mode is ON, the user can use Comtech’s application software
(Windows) to view the spectrum, or use the Web browser.
Selecting
Config
displays:
Config Spectrum Analyzer:
CenterFreq Span ( ◄ ► , ENT)
Selecting
Center Freq
displays:
Spectrum Analyzer: ( ◄ ► , ▲▼ , ENT)
Center Freq = 0070.0000 MHz
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