User`s guide

Cabling Requirements
C-2
6700-A2-GY31-70July 1999
SDU Cable
A 6-conductor cable, Part Number 835-1224-2511, with a 6-pin modular plug on
each end, wired one-to-one, is required to connect the adapter (Part Number
002-0025-0031) to the Shared Diagnostic Unit (SDU). The cable should not be
longer than 25 feet and must conform to all local and national codes and
regulations. If necessary, consult with the applicable regulatory agencies and
inspection authorities to ensure compliance.
98-16185
25 Feet
Maximum
Optional Adapter
Some computers need an extra adapter to connect the adapter (Part
Number 002-0025-0031) to their computer. The most common required adapter
is the DB9-S to DB25-P type. Table C-2 lists the required wiring for such an
adapter. Verify the type of connector and wiring requirements of your specific
serial port before proceeding.
Table C-2. DB9 to DB25 Adapter Wiring
Signal Name
DB9-S Pin Number DB25-P Pin Number
Transmit Data (TD) 3 2
Receive Data (RD) 2 3
Request To Send (RTS) 7 4
Clear To Send (CTS) 8 5
Signal Ground (SG) 5 7
Any adapters used must conform to all local and national codes and regulations.
If necessary, consult with the applicable regulatory agencies and inspection
authorities to ensure compliance.