Comtech EF Data CDM-740, Installation And Operation Manual

Page: 62 / 150

CDM-740 Advanced Satellite Modem Revision 0
Front Panel Operation MN-CDM740
5–10
5.4.2.4 (CONFIG:) Rx
Æ
Demod (Demodulation)
MODCOD: Auto (Auto,DVB-S)
Framing Mode=Normal (Normal,Short)(
◄►
v
E)
On the top line, select the Demodulation type and FEC rate using the
▲ ▼
arrow keys. Selections
are as follows:
•
Auto
•
DVB-S2 8-PSK 3/5
•
DVB-S2 32-APSK 3/5
•
DVB-S QPSK 1/2
•
DVB-S2 8-PSK 2/3
•
DVB-S2 32-APSK 2/3
•
DVB-S QPSK 2/3
•
DVB-S2 8-PSK 3/4
•
DVB-S2 32-APSK 3/4
•
DVB-S QPSK 3/4
•
DVB-S2 8-PSK 5/6
•
DVB-S2 32-APSK 5/6
•
DVB-S QPSK 5/6
•
DVB-S2 8-PSK 8/9
•
DVB-S2 32-APSK 8/9
•
DVB-S QPSK 7/8
•
DVB-S2 8-PSK 9/10
•
DVB-S2 32-APSK 9/10
•
DVB-S2 QPSK 1/4
•
DVB-S2 16-APSK 3/5
(Reserved1)
•
DVB-S2 QPSK 1/3
•
DVB-S2 16-APSK 2/3
(Reserved2)
•
DVB-S2 QPSK 1/2
•
DVB-S2 16-APSK 3/4 (Reserved3)
•
DVB-S2 QPSK 3/5
•
DVB-S2 16-APSK 5/6
•
DVB-S2 QPSK 2/3
•
DVB-S2 16-APSK 8/9
•
DVB-S2 QPSK 3/4
•
DVB-S2 16-APSK 9/10
•
DVB-S2 QPSK 5/6
•
DVB-S2 QPSK 8/9
•
DVB-S2 QPSK 9/10
To set the FEC Framing Mode, use the the
◄ ►
arrow keys to move to the
Framing Mode
operation on the bottom line, then set the mode as
Normal
or
Short
using the
▲ ▼
arrow keys.
The default value is
Normal
and, when selected, enables the standard FECFRAME = 64,800 bits.
If
Short
is selected, it enables the 16,200 bit frame.
Note: Only DVB-S2 allows a FECRAME choice.
Once the Rx Demodulation type and FEC Framing Mode are selected, press
ENTER.
5.4.2.5 (CONFIG:) Rx Æ Data
Rx Data Rate: 00009980.000 kbps (Read)
Rx Symbol Rate: 2000.000 ksps
(
◄►
E)
To configure the
Rx Data Rate
(in kbps), on the top line select the digit of Data Rate to be edited
using the
◄ ►
arrow keys, then change the value of that digit using the
▲ ▼
arrow keys. Press
ENTER
when done.
The maximum limits for the Data Rate are
16 kbps
to
9.98 Mbps
. The resolution is
1 bps
.