Product specifications

CDM-710 Broadcast Satellite Modem Revision 11
Front Panel Operation MN/CDM710.IOM
5–13
(CONFIG: Tx) Mod Æ α
Tx (α) Rolloff %: 20 25
35 (E)
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
W X
arrow keys, then press
ENTER.
(CONFIG: Tx) Mod Æ Pilot (DVB-S2 mode only)
Tx Modulation Pilot:
Off/On Avg/Peak (E)
Select Off/On or Avg/Peak using the W X arrow keys, then press ENTER.
(CONFIG: Tx) Mod Æ Pilot Æ Off/On (DVB-S2 mode only)
Tx Modulation Pilot:
Off/On Avg/Peak (E)
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
W X arrow keys to make the selection, then press ENTER.
(CONFIG: Tx) Mod Æ Pilot Æ Avg/Peak (DVB-S2 mode only)
Tx Modulation Pilot:
Average Peak (E)
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
W X arrow
keys, then press
ENTER. Note the following:
• 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
Not all commercially available demodulators will function well with
the Peak pilot level.