Product specifications

CDM-710 Broadcast Satellite Modem Revision 10
Front Panel Operation MN/CDM710.IOM
If Rx Demod: Æ Eq is selected:
Rx Adaptive Equalizer:
Off On (E)
Select Off or On using the ◄ ► arrow keys. The User should then press
ENTER.
The adaptive equalizer helps correct for linear distortion in the rest of the link. Linear distortion
includes amplitude and phase that would occur due to imperfect filtering effects, but it does not
include distortion due to non linear amplifiers.
If Rx Demod: Æ IQ-TP is selected:
Rx IQ TPs (J2-11,J2-3):
Pre-EQ Post-EQ (E)
Select Pre-Eq or Post-Eq using the ◄ ► arrow keys. The User should then press
ENTER.
This selection determines whether the IQ test point located on the Alarm Connector samples the
IQ signal before or after the Adaptive Equalizer. J2-11 and J2-3 refer to the pins on the Alarm
Connector that an oscilloscope is connected to monitor I and Q.
If Rx Demod: Æ Pilot is selected (this menu is only available when the Mode selection is
DVB-S2):
Rx Demodulation Pilot:
Off On (E)
This ‘status only’ menu is active only in the DVB-S2 mode. The demodulator automatically
determines if the pilots are On or Off. Press
ENTER or CLEAR to return to the previous menu.
If Rx Demod: Æ Scr (Descrambler) is selected (this menu is only available when the Mode
selection is DVB-S2):
Rx Descrambling Index:
Gold-n = 000000 (cbE)
The Descrambling menu is active only for DVB-S2 Mode. 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 0s.
Use the ◄ ► arrow keys to select the desired digit. The value of the digit is then changed using
the ▲ ▼ arrow keys. The User should then press
ENTER.
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