Comtech EF Data CDM-600/600L - Manual (Page 111)

CDM-600/600L Open Network Satellite Modem Revision 3
Front Panel Operation MN/CDM600L.IOM
5–35
5.6.5 INFO: RX
CDM-600L:
RX:1200.0000MHz 00.1dB +-10 RSI=N
VIT+RS:126/112 00604.000 QPSK 1/2 SCRM
CDM-600:
RX:070.00000MHz Z=50 02.0dB +-30 RSI=N
VIT+RS:126/112 00604.000 QPSK 1/2 SCRM
An example of the RX Information screen is shown above for the CDM-600L and CDM-600.
The information displayed is as follows:
TOP LINE
RX FREQUENCY xxxxx.xxx MHz
IMPEDANCE
(CDM-600 ONLY)
50 or 75 Ω
EbNo 12 dB (Alarm Point)
SWEEP RANGE up to ± 32 kHz
RSI RSI = RX Spectral Inversion, I=Inverted (on), N=Not inverted (off)
BOTTOM
LINE
ENCODER
FEC type: VITERBI, SEQ, TCM, VIT+RS, SEQ+RS, TCM+RS,
TPC, LDPC
NONE: x (x = Differential Encoder setting, shown as DE-OFF or
DE-ON)
DATA RATE
xxxxx.xxx kbps (an asterix * indicates that the data sense is
inverted)
DEMODULATION BPSK, QPSK, OQPSK, 8-PSK, 8-QAM, 16-QAM
FEC RATE 1/2, 2/3, 3/4, 7/8, 0.95, 5/16, 21/44 or 1/1
SCRAMBLER SCRM, NONE, or IESS (Turbo Only)
5.6.6 INFO: CLOCKS
CDM-600L:
CLOCKS:TX=INT(SCT)RX=EXT-CLK REF=INT10
BUFFER-SIZE=00016 CLK=02048U
CDM-600:
CLOCKS:TX=INT(SCT)RX=EXT-CLK
BUFFER-SIZE=00016 CLK=02048U
For the CDM-600L: The TX Clock, RX Clock, Reference, and Buffer information is displayed.
For the CDM-600: The TX Clock, RX Clock, and Buffer information is displayed.
Note: The Clock (CLK) information is shown only if Rx Clock is set to EXT-CLK.