Mocomtech CIM-550 - Manual (Page 74)

CiM-550 IP Enabled Satellite Modem Rev. 2
Front Panel Menus CD/CIM550.IOM
48
4.1.7.1.2 SELECT\MONIT\ALARMS\RECEIVE
DISPLAY SELECTIONS/DESCRIPTION
RX TRAFFIC: AGC ALARM
REDUCE COMPOSITE I/P LVL
The screen will indicate if there are any Receive
Traffic Faults. If not, it will display ‘NONE’.
4.1.7.1.3 SELECT\MONIT\ALARMS\TRANSMIT
DISPLAY SELECTIONS/DESCRIPTION
TX TRAFFIC: NO CLOCK
DETECTED FROM INTERFACE
The screen will indicate if there are any Transmit
Traffic Faults. If not, it will display ‘NONE’.
4.1.7.2 SELECT\MONIT\RX-PARAMS
DISPLAY SELECTIONS/DESCRIPTION
DEMODULATOR
UNLOCKED (ENTER)
This screen dispalys if the demodulator is unlocked.
RX:Eb/No=05.7dB dF=+11.7k
BER=3.4E-9 BUF=50 AGC=24
If the demodulator is locked, this screen shows the
following:
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.