Comtech EF Data CIM-550 Installation And Operation Manual page 74

Ip-enabled satellite modem
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CiM-550 IP Enabled Satellite Modem
Front Panel Menus
4.1.7.1.2 SELECT\MONIT\ALARMS\RECEIVE
RX TRAFFIC:
REDUCE COMPOSITE I/P LVL
4.1.7.1.3 SELECT\MONIT\ALARMS\TRANSMIT
TX TRAFFIC:
DETECTED FROM INTERFACE
4.1.7.2 SELECT\MONIT\RX-PARAMS
DEMODULATOR
UNLOCKED
RX:Eb/No=05.7dB dF=+11.7k
BER=3.4E-9 BUF=50 AGC=24
Eb/No
This shows the value of Eb/No calculated by the demodulator. The value referred to here is the
energy per information bit (Ebi), divided by the noise spectral density (No).
dF
The frequency offset of the received carrier, in kHz, with a displayed resolution of 100 Hz.
BER
This is an estimate of the corrected BER.
BUF
(Buffer fill state) This shows the fill state (in percent), of the receive Buffer. After a reset, it will read
50. A value <50 indicates that the buffer is emptying, and >50 indicates that it is filling.
AGC
A number between 0 and 99 indicating the gain setting of the coarse AGC loop in the demod. It has
a limited dynamic range, and should not be taken as an accurate measurement of signal level.
DISPLAY
AGC ALARM
DISPLAY
NO CLOCK
DISPLAY
(ENTER)
SELECTIONS/DESCRIPTION
The screen will indicate if there are any Receive
Traffic Faults. If not, it will display 'NONE'.
SELECTIONS/DESCRIPTION
The screen will indicate if there are any Transmit
Traffic Faults. If not, it will display 'NONE'.
SELECTIONS/DESCRIPTION
This screen dispalys if the demodulator is unlocked.
If the demodulator is locked, this screen shows the
following:
48
Rev. 2
CD/CIM550.IOM

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