CiM-550 IP Enabled Satellite Modem

Rev. 2

Front Panel Menus

CD/CIM550.IOM

SELECT\CONFIG\TX\TSI

 

DISPLAY

 

SELECTIONS/DESCRIPTION

 

 

 

 

 

 

 

TSI - Transmit Spectral Interval

 

SELECT TRANSMIT SPECTRAL

 

 

ON

 

INVERSION: OFF ON(ENTER)

 

OFF

 

 

 

When in the ON position, and QPSK is

 

 

 

selected, the transmit spectrum is

 

 

 

inverted (which is the same as reversing

 

 

 

the direction of phase rotation in the

 

 

 

modulator). In BPSK, the time-order of

 

 

 

bits out of the FEC encoder is reversed,

 

 

 

to make the modem compatible with

 

 

 

certain other manufacturer’s modems.

4.1.5.2.2 SELECT\CONFIG\RX

 

DISPLAY

 

SELECTIONS/DESCRIPTION

 

 

 

 

 

 

 

 

 

RX: MOD FRQ DATA FEC ACQ

 

 

 

DESCRAM CLK BUF RSI Eb/No

 

 

 

 

 

 

 

 

 

 

SELECT\CONFIG\RX\MOD

 

DISPLAY

 

SELECTIONS/DESCRIPTION

 

 

 

 

 

 

 

BPSK

 

SELECT RX MODULATION:

 

 

QPSK

 

BPSK QPSK OQPSK (ENTER)

 

OQPSK

 

 

 

Note: If a TURBO FEC option is selected, the

 

 

 

demodulation type will be automatically

 

 

 

fixed, and the user will be presented with a

 

 

 

warning screen.

SELECT\CONFIG\RX\FRQ

 

DISPLAY

 

SELECTIONS/DESCRIPTION

 

 

 

 

 

 

 

The range is 52 - 88 MHz (70 MHz factory option) or

 

EDIT RX FREQUENCY:

 

 

104 - 176 MHz (140 MHz factory option).

 

72.2345 MHz (PRESS ENT)

 

 

 

 

 

 

 

 

 

 

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