Config, Rx) Frequency; Config, Rx) Acq - Comtech EF Data CDM-570L Installation And Operation Manual

CDM-570/570L Satellite Modem with Optional IP Module
Front Panel Operation
6.8.5

(CONFIG, RX) FREQUENCY

Rx IF Freq:1156.3456 MHz
Edit the receive frequency. This is accomplished by selecting the digit to be edited, using
the
◄ ►
The user should then press ENTER. The range of frequencies is from 950 to 1950 MHz,
with a resolution of 100 Hz.
For the CDM-570L, the range of frequencies is from 950 to 1950 MHz, with a resolution
of 100 Hz. Furthermore, if, using the ODU, LNB menus, the user has selected an LNB
LO frequency other than zero and defined whether the mix is high-side or low-side, the
display will be modified as shown below, to include the calculated Transmit RF
frequency of the modem/LNB combination:
Rx IF Freq:1156.3456 MHz
RF=12156.3456(◄ ►,▲ ▼,ENT)
As the Rx IF frequency is edited the RF frequency will automatically be updated.
However, for the CDM-570, the range of frequencies permitted is from 50 to 90 MHz,
and from 100 to 180MHz, with a resolution of 100 Hz , as shown below:
Rx IF Freq:0075.9876 MHz
Note the leading zeros, which are included to maintain compatibility with the CDM-570L
software.
6.8.6

(CONFIG, RX) ACQ

Demod Acquisition Range:
+/- 010 kHz
Edit the acquisition search range of the demodulator (the value entered here determines
the amount of frequency uncertainty the demodulator will search over in order to find and
lock to an incoming carrier). Editing the value is accomplished by selecting the digit to be
edited, using the
arrow keys. The user should then press ENTER.
(◄ ►,▲ ▼,ENT)
arrow keys. The value of the digit is then changed using the
(◄ ►,▲ ▼,ENT)
(▲ ▼,ENTER)
arrow keys. The value of the digit is then changed using the
◄ ►
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Revision 4
MN/CDM570L.IOM
arrow keys.
▲ ▼
▲ ▼