Comtech EF Data SLM-5650A Installation And Operation Manual page 120

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