6100 MPS-B Programming Manual

6100 MPS-B LINK MANAGEMENT
Modem Signals
MODEM SIGNALS
The following modem signals are used by 6100 MPS-B:
Signal Function Pin
AA Protective Ground 1
AB Signal reference (signal ground) 7
BA TXD (Transmit Data) 2
BB RXD (Receive Data) 3
CA RTS (Request to Send) 4
CB CTS (Clear to Send) 5
CC DSR (Data Set Ready) 6
CD DTR (Data Terminal Ready) 20
CF DCD (Data Carrier Detect--Receive Line 8
Signal Detect)
In addition to the modem signals listed and described above, the
EIA RS-232-C line interface module (LIM) makes connection to
modem signals whose status is ignored by 6100 MPS-B. These
signals are:
Signal Function Value Pin
DA External Transmitter Clock Ignored 24
DB Transmitter Clock Ignored 15
DD Receiver Clock Ignored 17
CE Ring Indicator Ignored 22
CH/CI Data Rate Select/Indicator Always ON 23
SB Standby Indicator Ignored
SS Select Standby Always OFF
SBA Secondary Data Transmit Always 0 14
SCA Secondary Request to Send Always OFF 19
SCF Secondary Carrier Detect Ignored 12
The rest of this section describes how 6100 MPS-B uses the modem
signals.
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