Comtech EF Data SLM-5650A - Manual (Page 120)

SLM-5650A Satellite Modem Revision 8
Front Panel Operation MN-SLM5650A
5–38
5.2.4.3 Monitor: Rx-Params
Fc=+05917 RSL<-60.0 dBm BERT=N/A
Buf=000% Eb/No=Loss BER <1.0E-12 (E)
This read-only screen displays the following Rx operating parameters:
Item Description
Fc
Displays the received carrier frequency offset in Hz. The range is the same as the acquisition range
of the modem – 60 kHz.
RSL Displays the signal level of the received carrier in dBm. The range supported is (+)15–(-60) dBm.
BERT
Displays the measured BER. This requires that the modem be set to Test mode for Rx. If a
Fireberd is supplying a data pattern, only the Test mode for the Rx needs to be turned on. The
Fireberd data pattern and the modems data pattern must match to work properly.
Buf Displays the buffer fill status in a percentage format.
Eb/No Displays the estimated Eb/No of the received carrier. The range is threshold to 20 dB Eb/No.
BER Displays the estimated BER based on the demodulator’s measurement of the carrier to noise.
The difference between BER and BERT is that BER is estimated in the
demodulator, while BERT is measured when the Test mode is turned ON.
Press [ENT] or [CLR] to return to the previous menu.
5.2.4.4 MONITOR: CnC (DoubleTalk ® Carrier-in-Carrier ® )
CnC: Delay=000,005uS FreqOff=008.7kHz
Eb/No=Loss Ratio<-10dB (E)
If enabled and locked, the display will show the CnC performance data. This read-only screen
updates once every second.
Item Description
Delay Displays the current search delay value.
FreqOff Displays the current frequency offset between the outbound interferer and the desired inbound.
Eb/No Displays the estimated Eb/No of the received carrier. The range is threshold to 20 dB Eb/No.
Ratio Displays the ratio of outbound interferer power to desired inbound power. The range is ±10 dB.
Press [ENT] or [CLR] to return to the previous menu.