Table of Contents
Advertisement
Wiring 1394 GMC and GMC Turbo Systems
Figure 4.11
RS-232/422 Cable Signals
RS-232C
Serial Device
Com
RxD
TxD
Shield
Recommended Cable -
Belden #9533 or Equivalent
1
1394 connector is 9 pin, AMP #205204-1 or equivalent.
Data Highway Connection
The 1394 provides two optically-isolated ports (J1 and J2) for Data
Highway 485 (DH-485) communication. Both connectors are wired
identically (you can use either one). A telephone-type connector
provides the interface with the following signal designations.
Pin: Signal:
Description:
1
Data A
Data A Transmit
2
Data B
Data B Transmit
3
NC
No Connection
4
NC
No Connection
5
Tx Enab
Transmitted Data Enable
6
Shield
Signal Shield
7
Com
Signal Common
8
NC
No Connection
1
J3/CHAN A
J4/CHAN B
Serial Device
5
RxD+
2
RxD-
3
TxD+
TxD-
Com
4-13
RS-422
1
J3/CHAN A
J4/CHAN B
4
2
7
3
5
Recommended Cable -
Belden #9503 or Equivalent
Publication 1394-5.0 — May 2000
Advertisement
Table of Contents
Troubleshooting
