Comtech EF Data CDM-600/600L - Manual (Page 117)

CDM-600/600L Open Network Satellite Modem Revision 3
Front Panel Operation MN/CDM600L.IOM
5–41
5.7.4 MONITOR: RX-PARAMS
RX=PARAMETERS: EbNo=11.4dB
ΔF=+11.7kHz
BER=0.0E-9 BUFFER=51% RX-LEVEL=-43dBm
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).
ΔF
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.
Buffer
(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.
Rx-Level
A dBm reading indicating the signal level of the desired receive carrier.
Resolution: 0.5dB
5.7.5 MONITOR: AUPC-PARAM
AUPC-PARAMS: REMOTE EbNo=6.8 dB
TRANSMIT POWER INCREASE=1.2 dB
The top line displays the value of Remote Eb/No of the demodulator at the distant end of the
satellite link. The REMOTE Eb/No will display UNLOCK if the remote Demod is unlocked.
The bottom line shows how much the AUPC system has increased the output power. If AUPC is
not enabled, the value of TRANSMIT POWER INCREASE will show as 0.0 dB.
5.7.6 MONITOR: LNB (CDM-600L ONLY)
LNB: CURRENT = xxx mA Voltage = xx V
This submenu item permits the user to monitor configure a LNB (Low-Noise Block
Downconverter), if connected. The monitor display shows the measured LNB current load and
LNB voltage at the receive IF connector. Refer to Appendix F. ODU (BUC, LNB)
OPERATION VIA THE CDM-600L for complete details about the ODU operations
associated with this modem-specific submenu item.
5.7.7 MONITOR: BUC (CDM-600L ONLY)
BUC: CURRENT= 0000mA VOLT= 47.9V CLASS=N/A
PWR=N/A Amb=N/A PLL=N/A VER=NA
This submenu item permits the user to monitor configure a BUC (Block Upconverter), if
connected. Refer to Appendix F. ODU (BUC, LNB) OPERATION VIA THE CDM-600L for
complete details about this modem-specific submenu item.