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A. Pinouts
A-4 July 2003 8620-A2-GN20-40
DB25 Adapter Pinouts
The DB25 (RS-232 male) cable adapter (Paradyne Part No. 002-0087-0031) is
used to convert the 8-pin modular serial interface to a standard RS-232 DB25
interface, which can then be connected to a terminal, computer, or any Data
Termination Equipment (DTE). Connection to a modem requires a null modem
adapter. The following table lists the pin assignments.
DB9 Adapter Pinouts
The female DB9 cable adapter (Paradyne Part No. 002-0091-0031) is used to
convert the 8-pin modular serial interface to a standard DB9 interface, which can
then be connected to a laptop computer. The following table lists the pin
assignments.
8-Pin Modular
Serial Interface
Pin Number Use
DB25
Interface Pin
Number
1
2
Pins 1 and 2 are
shorted together
—
3 Data Terminal Ready 20
4 Signal Ground 7
5 Receive Data 3
6 Transmit Data 2
7 Clear to Send 5
8 Request to Send 4
99-15388a
8-Pin Modular
Serial Interface
Pin Number Use
DB9
Interface Pin
Number
1
2
Pins 1 and 2 are
shorted together
—
3 Data Terminal Ready 4
4 Signal Ground 5
5 Receive Data 2
6 Transmit Data 3
7 Clear to Send 8
8 Request to Send 7
99-16049a