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CDM-625 Advanced Satellite Modem
Front Panel Operation
5.4.4.2
Config: Rx
Rx-IF Frequency:
Select each digit of the frequency to be edited using the
digit using the
frequency ranges are:
The resolution is 100Hz.
If an LNB LO-frequency has been configured using the ODU menus, then this menu will show a
second line of information (the example shown here uses low-sided mix):
Rx-IF Frequency:
(LO:12500 MHz
As the IF frequency is edited, the Satellite frequency is updated accordingly.
Satellite Frequency = LO +/- IF frequency, where the sign is determined by the LO mix parameter:
5.4.4.3
CONFIG: Rx
Decoder=Vit
Reed-Solomon=Off (Off,On)
Select the parameter to edit – Decoder or Reed-Solomon – using the
press ENTER.
The Decoder options are shown in the parentheses. Scroll through the options using the
arrow keys, then press ENTER. The choices are:
•
None (uncoded)
•
Viterbi
•
TCM (Trellis Coded Modulation) – 8-PSK Rate 2/3 only (FAST option)
•
TPC (Turbo) (Hardware option)
•
LDPC (Hardware option)
Note: The options of TPC or LDPC decoding are displayed only if a TPC/LDPC Codec is installed.
Freq (Frequency)
arrow keys. When editing is complete, press ENTER. The available
▲ ▼
•
50 - 180 MHz, and
•
950-1950 MHz (L-band) – FAST option
Sat:13700.0000 MHz) (34v)
•
High-sided mix [-] (includes a spectral inversion)
•
Low-sided mix [+].
FEC
(None,Vit,TCM,TPC,LDPC)
0050.0000 MHz
◄ ►
arrow keys. Edit the value of the
1200.0000 MHz
5–17
MN-0000036 (Ref MN/CDM625.IOM)
(34v)
(34v)
◄ ►
arrow keys, then
Revision 1
▲ ▼
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