Table of Contents
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SLM-3650 Satellite Modem
Installation
Notes:
1. IDR configuration connector pinouts:
2. D&I/ASYNC interface connector pinouts:
3. The 50-pin connector requires a breakout panel for the external connections
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a.
Backward alarm relay contacts are named for normal no fault conditions
(BWOx-C connected to BWOx-NC if no fault).
b.
Backward alarm inputs should be grounded or pulled logic low to clear
the alarm.
c.
Signals MF, DF, and DMA are open-collector, high-impedance (if
faulted). MF and DF are used by a backup protection switch if the
modem is used in a redundant system.
d.
Relay contacts DF-C and DF-NO are named for faulted condition (DF-
C connected to DF-NO, unless demodulator [Demod] fault).
a.
With regard to alarm relay contacts, COMM is connected to NO when
there is no fault. COMM is connected to NC in a faulted condition.
b.
Signals MF, DF, and DMA are open-collector, high-impedance (if
faulted). MF and DF are used by a backup protection switch if the
modem is used in a redundant system.
between the modem and terrestrial equipment.
2-11
Revision 3
MN/SLM3650.IOM
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