HP PCI Multiplexer Family Cabling, Diagnostics, and Troubleshooting Manual

Port to Device Cabling
Modular Cables
Chapter 4 53
Figure 4-12 shows cabling examples for RS-422 connections between the
HP J2501A and common HP terminals. In all cases, the transmit pair of
wires and the receive pair of wires should be twisted pairs to minimize
crosstalk. Cable lengths of up to 1200 meters are supported for all data
rates.
Figure 4-12 RS-422 Modular Cable to HP239xA and HP700/xx Terminals
The cabling scheme in Figure 4-12 may be used for connecting the
following classes of devices with HP RS-422 interfaces:
HP Terminals:HP2392A/93A/94A/97A and HP700/60, 70, 96, 98 and
similar terminals
HP Printers: HPC2001A, C2021A LaserJet 4 and 4M printers
HPC2401A/2A and other HP serial line printers which have configurable
RS-422 interfaces HPC2401A/2A and other related Centronics line
printers
Please refer to the pinout diagram in the user’s manual for your specific
device to verify its compatibility with the cabling scheme shown above.