(Config: Tx) Mod Pilot (Dvb-S2 Mode Only); (Config: Tx) Mod Pilot Off/On (Dvb-S2 Mode Only); (Config: Tx) Mod Pilot Avg/Peak (Dvb-S2 Mode Only); Pilot (Dvb-S2 Mode Only) - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710 Broadcast Satellite Modem
Front Panel Operation
(CONFIG: Tx) Mod
Tx (α) Rolloff %:
35
The default Rolloff (α) setting is 20%. Whenever the Mode is changed, (α) reverts to 20%,
but (α) can be modified to 25% or 35% from this menu. Select the value using the
arrow keys, then press
(CONFIG: Tx) Mod
Tx Modulation Pilot:
Off/On
Select Off/On or Avg/Peak using the
(CONFIG: Tx) Mod
Tx Modulation Pilot:
Off/On
The default value is Off. Select Off to disable insertion of pilot symbols into the physical
layer frame. Select On to enable insertion of pilot symbols into the physical layer frame.
Use the
(CONFIG: Tx) Mod
Tx Modulation Pilot:
Average
The solid cursor indicates the current configuration choice. The CDM-710 automatically
adjusts, but the default value is Average. Select Average or Peak using the
keys, then press
•
Select Average to set the pilots and header to the average power band of the
transmitted constellation (QPSK, 8PSK, 16APSK or 32APSK) per DVB-S2.
•
Select Peak to set the pilots and header to the outer ring of the transmitted
constellation (QPSK, 8PSK, 16APSK or 32ASK).
IMPORTANT
α
20 25
(
.
ENTER

Pilot (DVB-S2 mode only)

Avg/Peak (
Pilot
Avg/Peak (
arrow keys to make the selection, then press
Pilot
Peak (
. Note the following:
ENTER
Not all commercially available demodulators will function well with
the Peak pilot level.
5–13
E)
E)
arrow keys, then press
Off/On (DVB-S2 mode only)
E)
ENTER
Avg/Peak (DVB-S2 mode only)
E)
Revision 11
MN/CDM710.IOM
.
ENTER
.
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