CDM-625 Advanced Satellite Modem
Revision 1
Front Panel Operation
MN-0000036 (Ref MN/CDM625.IOM)
5.7.4
Info: Tx
Tx:On 0070.0000MHz PWR=-20.0 TSI=N
Vit+RS:220/200 00064.000 QPSK 7/8 Scrm
A sample display of
Tx
Info is shown. The information displayed here is as follows:
Top Line:
Tx Carrier
Tx Frequency
Power
TSI
On, Off, or RTI
xxxx.xxxx MHz
Power Level (dBm)
TSI = Tx Spectral Inversion, I=Inverted (on), N=Not inverted (off)
Bottom line:
Encoder
Data Rate
Modulation
FEC Rate
Scrambler
FEC type: Viterbi, TCM, Vit+RS, TCM+RS, TPC, LDPC, None: DE-xxx
(DE is the Differential Encoder setting, shown as DE-Off or DE-On)
xxxxx.xxx kbps (an asterix * indicates that the data sense is inverted)
BPSK, QPSK, OQPSK, 8-PSK, 8-QAM, 16-QAM
1/2, 2/3, 3/4, 7/8, 0.95, 5/16, 21/44 or 1/1
Scrm, None, or IESS (Turbo Only)
5.7.5
Info: Rx
Rx:0070.0000MHz 02.0dB +-30 RSI=N
Vit+RS:126/112 01544.000 QPSK 1/2 Scrm
A sample display of Rx Info is shown. The information displayed here is as follows:
TOP LINE:
Rx Frequency
Eb/No
Sweep Range
RSI
xxxx.xxxx MHz
12.3 dB (Alarm Point)
up to
±
32 kHz
RSI = Rx Spectral Inversion, I=Inverted (on), N=Not inverted (off)
BOTTOM LINE:
Decoder
Data Rate
Demodulation
FEC Rate
Descrambler
FEC type: Viterbi, TCM, Vit+RS, TCM+RS, TPC, LDPC, None: DE-xxx
(DE is the Differential Encoder setting, shown as DE-Off or DE-On)
xxxxx.xxx kbps (an asterix * indicates that the data sense is inverted)
BPSK, QPSK, OQPSK, 8-PSK, 8-QAM, 16-QAM
1/2, 2/3, 3/4, 7/8, 0.95, 5/16, 21/44 or 1/1
Scrm, None, or IESS (Turbo Only)
5.7.6
Info: Clocks
Clocks:Tx=Int(SCT) CEX=RxEnable E1-unbal
Rx=Int(SCT) Buffer=00016bytes REF=Int10
The Tx Clock, G.703 Clock Extension, Rx Clock, Reference, and Buffer information is
displayed.
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