Comtech EF Data CDM-Qx Installation And Operation Manual page 64

CDM-Qx Satellite Modem
Front Panel Operation
FEC Type
Viterbi
Viterbi + R-S
TCM + R-S
TPC
Important Note: Where noted in the table above, if EDMAC framing is employed, the upper data rate will be reduced
by 5% for data rates up to 2.048 Mbps, and by 1.6% for data rates above 2.048 Mbps, where EDMAC2 framing is used,
or for Rate 21/44 BPSK/QPSK Turbo, or Rate 5/16 BPSK Turbo.
(Config%Tx%Freq) – TX IF FREQUENCY
Tx IF Freq: 1156.3456 MHz
The range of frequencies depends upon the plug-in module – the preceeding example
shows the L-Band version of modem. Edit the Transmit IF Frequency by selecting the
digit to be edited, using the ! " arrow keys. The value of the digit is then changed using
the #$ arrow keys, then pressing
If (using the ODU, BUC menus) the user has selected a BUC LO frequency (other than
zero) and defined whether the mix is high side or low side, the display will be modified
as shown below, to include the calculated Transmit RF frequency of the modem/BUC
combination:
Tx IF Freq: 1156.3456 MHz
RF=14156.3456
As the Tx IF frequency is edited, the RF frequency will automatically be updated.
Modulation Code Rate
BPSK Rate 1/2
Rate 1/2
QPSK Rate 3/4
Rate 7/8
BPSK Rate 1/2
Rate 1/2
QPSK Rate 3/4
Rate 7/8
Rate 3/4
16-QAM
Rate 7/8
8-PSK Rate 2/3
Rate 5/16
BPSK
Rate 21/44
Rate 21/44
Rate 3/4
QPSK
Rate 7/8
Rate 17/18
Rate 3/4
8-PSK
Rate 7/8
Rate 17/18
Rate 3/4
16-QAM
Rate 7/8
(◄ ►,▲ ▼, ENT)
ENTER
(◄ ►▲ ▼ ENT)
5–16
Data Rate Range
32 kbps to 5 Mbps
32 kbps to 10 Mbps
32 kbps to 15 Mbps
32 kbps to 17.5 Mbps
32 kbps to 4.5 Mbps
32 kbps to 9.1 Mbps
32 kbps to 13.7 Mbps
32 kbps to 16 Mbps
349.1 kbps to 20 Mbps
407.3 kbps to 20 Mbps
232.7 kbps to 18.3 Mbps
32 kbps to 3.1 Mbps
32 kbps to 4.7 Mbps
32 kbps to 9.5 Mbps
32 kbps to 15 Mbps
32 kbps to 17.5 Mbps
32 kbps to 18.888 Mbps
288 kbps to 20 Mbps
336 kbps to 20 Mbps
362.7 kbps to 20 Mbps
384 kbps to 20 Mbps
448 kbps to 20 Mbps
.
Revision 6
MN/CDMQx.IOM
EDMAC limited?
Yes – see note below
Yes – see note below
Yes – see note below
Yes – see note below
No