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Comtech EF Data SNM-1000 User Manual

Page 75

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SNM-1000 Node Control Modem

Revision 3

Operation

MN/SNM1000.IOM

3–33

3.4.5.2 UTILITY:DEMODULATOR

UTILITY

DEMODULATOR

3.4.5.2.1 DEMODULATOR:ASSIGN TRANSMIT FILTERS

ASSIGN

TRANSMIT FILTERS

Receive code rate/type as follows:

RX-A QPSK 1/2 19.200 kbps

RX-B QPSK 1/2 19.200 kbps

RX-C QPSK 1/2 19.200 kbps

RX-D QPSK 1/2 19.200 kbps

RX-V QPSK 1/2 19.200 kbps


Upon entry, the current transmitter rate is displayed.

3.4.5.2.2 DEMODULATOR:

DEMODULATOR

TYPE

DEMODULATOR TYPE

INTELSAT OPEN

Transmit filter type select. Select one of the following for network filtering:

Note:
Change in EFD, ASYNC, or Custom modem types only.

INTELSAT OPEN FDC

CLOSED

EFD CLOSED

SDM-51 COMPATIBLE

CSC CLOSED

Notes:

1. TX filter type is selectable only when CUSTOM is selected for the modem type in

the Utility Modem Type menu.

2. Code Rate 3/4 is not compatible with a combination of a CSC CLOSED

Modulator Type and Sequential Encoder.