Comtech EF Data SMS-301 - Manual (Page 67)

Rev. 3 4-1 4-1
4
Chapter 4.
THEORY OF OPERATION
This chapter provides the basic theory of operation for the following:
•
M&C 75
Ω
•
M&C 50
Ω
•
IBS, IDR, ASYNC, D&I, 50-pin (PL/5951)
•
EIA-422/-449, V.35, G.703, 37-pin (PL/5952)
•
LVDS/DVB-TX, 37-pin (PL/6201-1)
•
EIA-422/DVB-TX, 37-pin (PL/6201-2)
•
EIA-232/-422/-530, V.35, G.703 25-pin (PL/6026)
•
Remote Switch Option (RS-301), 100-pin (PL6592/6627)
4.1 Monitor and Control (M&C)
The M&C monitors the switch configuration, as well as 1:1 switch and modem faults and
status. 1:1 switch configuration parameters are stored in battery-backed RAM to provide
total recovery after a power-down. The 1:1 switch gathers status and provides extensive
fault monitoring. A local front panel interface and a remote communications interface
provide user access to all 1:1 switch functions.