Table B-5: Pin Assignments For The Pc Serial Data Cable - PictureTel Concorde 4500 Servicing Manual

Signal Description
RX Receive data
TX Transmit
data
DCD Data carrier
detect
DSR Data set
ready
DTR Data
terminal
ready
RTS Request to
send
CTS Clear to send
GND Ground
The PC Serial Data cable has a 9-pin D Female connector which
plugs into the back of the PC and a 25-pin D Male connector which
plugs into Control Port B on the CP board or any of the RS-232 ports
on the DI board.
The following table lists the pin assignments for the PC Serial Data
cable.

Table B-5: Pin Assignments for the PC Serial Data Cable

Pin
Direction of Flow
(9-pin
PC
to PC)
2 < ÐÐÐÐÐÐÐÐÐÐÐÐÐÐ
3 ÐÐÐÐÐÐÐÐÐÐÐÐÐÐÐ>
1 <ÐÐÐÐÐÐÐÐÐÐÐÐÐÐÐ
6 <ÐÐÐÐÐÐÐÐÐÐÐÐÐÐÐ
4 ÐÐÐÐÐÐÐÐÐÐÐÐÐÐÐ>
7 ÐÐÐÐÐÐÐÐÐÐÐÐÐÐÐ>
8 <ÐÐÐÐÐÐÐÐÐÐÐÐÐÐ
5 ÐÐÐÐÐÐÐÐÐÐÐÐÐÐÐ
Pin
(25-pin to
VCS Concorde•
4500)
3
2
8
6
4
20
5
7
PC Serial Data Cable
Maximum
Signal Cable
Length
RX 7.5 m
(24.6 feet)
TX
DCD
DSR
DTR
RTS
CTS
GND
B-7