3-12
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Interconnect Signals
3
C7
PRD04
DATA (bit 4) (Printer)
C8
PRD06
DATA (bit 6) (Printer)
C9,C10
GND
GROUND
C11
PRPE
PAPER EMPTY (Printer) - out of paper.
C12
INPRIME*
INPUT PRIME (Printer) - an output signal that clears
the printer buffer and initializes the logic.
C13-C15
GND
GROUND
C16
CTS3
CLEAR TO SEND (Serial Port 3) - CTS is a function
supplied to the terminal by the modem, and indicates
that it is permissible to begin transmission of a
message. When using a modem, CTS follows the off-
to-on transition of RTS after a time delay.
C17
DCD3
DATA CARRIER DETECT (Serial Port 3) - sent by
the modem to the terminal to indicate that a valid
carrier is being received.
C18
TXD1
TRANSMIT DATA (Serial Port 1) - data to be
transmitted is furnished on this line to the modem from
the terminal.
C19
RXD1
RECEIVE DATA (Serial Port 1) - data that is
demodulated from the receive line is presented to the
terminal by the modem.
C20
RTS1
REQUEST TO SEND (Serial Port 1) - RTS is supplied
by the terminal to the modem when it is required to
transmit a message. With RTS off, the modem carrier
remains off. When RTS is turned on, the modem
immediately turns on the carrier.
C21-C25
GND
GROUND
PIN
SIGNAL
NUMBER
Table 3-4. Connector J2 interconnect signals (Continued)
Pin
Number
Signal
Mnemonic
Signal Name and Description
