Mocomtech CDM-QX - Manual (Page 107)

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Front Panel Operation MN/CDMQX.IOM
5–41
CONFIG: ODU Æ BUC Æ Mix
BUC Frequency Mix:
High-Side Low-Side (◄ ►,ENT)
To define the sense of the frequency translation, select High-Side or Low-Side using the
◄ ► arrow keys, then press ENTER.
5.4.9.2 CONFIG: ODU
Æ LNB
LNB: DC-Voltage 10MHz Alarm
LO Mix (◄ ►,ENT)
Select M&C-FSK, DC-Pwr, 10MHz, Alarm, Delay, LO or Mix using the ◄ ► arrow keys,
then press
ENTER
. Note the following:
DC-Voltage
Selects the LNB power supply output voltage as 13 or 18 Volts, and turns the
LNB power OFF.
10MHz Permits user to turn the 10MHz frequency reference for the LNB ON or OFF.
Alarm
Permits user to define the upper and lower limits for a current ‘window’. If the
measured LNB current falls outside this window, an alarm is generated.
LO
Permits user to define the LO frequency used in the LNB. This is then used in the
display of RF frequency in the CONFIG: Rx Æ Freq menu.
Mix
Permits user to define the sense of the frequency translation – either high-side
mix or low-side mix.
CONFIG: ODU
Æ LNB Æ DC-Voltage
LNB DC Supply Voltage:
13V
(▲ ▼,ENT)
Use the ST arrow keys to set the desired LNB DC Supply Voltage, then press
ENTER
. The
choices are 13V, 18V, or Power Off.
CONFIG: ODU
Æ LNB Æ 10MHz
LNB 10MHz Reference:
On Off (◄ ►,ENT)
Select the LNB 10MHz frequency reference as either On or Off using the ◄ ► arrow keys,
then press
ENTER
.
CONFIG: ODU Æ LNB Æ Alarm
LNB Current Alarm:
Upper Lower (◄ ►,ENT)
Select Upper or Lower using the ◄ ► arrow keys, then press
ENTER
.