Comtech EF Data CDM-740 - Manual (Page 62)

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)( ◄►
vE)
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.