Comtech EF Data CDM-740, Инструкция по установке и эксплуатации

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CDM-740 Advanced Satellite Modem Revision 0
Front Panel Operation MN-CDM740
5–11
The actual minimum and maximum data rates are dependent on Framing mode, Interface type,
Demodulation type and FEC Code Rate. If the user changes any of the higher-priority parameters
– causing the data rate to become invalid – the
Data Rate
is adjusted automatically. The upper
range of data rate will also be dictated by the
FAST option(s)
installed.
To configure the
Rx Symbol Rate
(in ksps), on the bottom line select the digit of Symbol Rate to
be edited using the
◄ ►
arrow keys. Change the value of that digit using the
▲ ▼
arrow keys,
then press
ENTER
.
On the pages that follow, refer to
Table 5-2
through
Table 5-4
for Rx Symbol Rate and Data
Rate ranges (DVB-S, DVB-S2 Normal Frame, and DVB-S2 Short Frame).
5.4.2.6 (CONFIG:) Rx Æ Descram(bler) (DVB-S2 only)
Rx Descrambling Index:
Gold-n= [000000] (
◄►
E)
When in DVB-S2 Mode only:
The Gold-n Index indicates the Physical Layer spreading
sequence number, and can be set from
0
to
262,141
. The default setting is all
0
s.
Edit the Gold-n Index Code by using the
◄ ►
arrow keys to select the desired digit, then change
the value of that digit using the ▲ ▼ arrow keys. Press
ENTER
when done.
5.4.2.7 (CONFIG:) Rx Æ Pilot (DVB-S2 only)
Rx Demod Pilot: Off On
(
◄►
E)
When in DVB-S2 Mode only:
Select the Rx Demodulator Pilot as
Off
or
On
using the
◄ ►
arrow keys, then press
ENTER
.