Config: Tx) Inv (Inversion Functions); Config: Rx (Receive) - Comtech EF Data CDM-570 Installation And Operation Manual

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

5.2.2.1.3.10 (CONFIG: Tx) Inv (Inversion Functions)

Tx Inversion functions:
Spectrum
◄ ►
Use the arrow keys to select Spectrum or Data, and then press ENTER.
(CONFIG: Tx) Tx Inversion functions: Spectrum
Tx Spectrum:
Inverted
Use the ◄ ►
(CONFIG: Tx) Tx Inversion functions: Data
Tx Data Sense:
Inverted
Use the ◄ ►
5.2.2.1.4

CONFIG: Rx (Receive)

Rx:FEC Dem Code Data Frq
Acq Descram Buf Inv EbNo
◄ ►
Use the
EbNo, and then press ENTER.
The submenu selections are summarized as follows:
Selection Sect.
FEC 5.2.2.1.4.1
Dem 5.2.2.1.4.2
Code 5.2.2.1.4.3
Data 5.2.2.1.4.4
Frq 5.2.2.1.4.5
Acq 5.2.2.1.4.6
Data (◄ ►,ENT)
Normal
(◄ ►,ENTER)
arrow keys to select Normal or Inverted, and then press ENTER.
Normal
(◄ ►,ENTER)
arrow keys to select Normal or Inverted, and then press ENTER.
arrow keys to select FEC, Dem, Code, Data, Frq, Acq, Descram, Buf, Inv, or
Description
(Forward Error Correction) Used to select the method of FEC used for
reception (Viterbi, TPC, etc.). FEC type takes the highest configuration priority.
(Demodulation) Used to select the modulation type used for reception (BPSK,
QPSK, 8-PSK, etc.). The choice of demodulation will depend on the FEC type
chosen.
(FEC Code Rate) Used to select the FEC Code Rate used for reception (Rate
1/2, Rate 3/4, etc.). The choice of Code Rate will depend on both the FEC type
and Demodulation selected.
(Data Rate) Used to select the receive data rate, in steps of 1 bps. The choice of
data rate will depend on the FEC type, Demodulation, and Code Rate selected.
(Frequency) Used to select the transmit frequency, in steps of 100Hz.
•
CDM-570L range: 950 MHz to 2000 MHz
•
CDM-570 range: 50 to 90 MHz and 100 to 180 MHz
(Acquisition) Used to determine the amount of frequency uncertainty the
demodulator will search over in order to find and lock to an incoming carrier.
5–20
Revision 12
MN/CDM570L.IOM