3.0 INSTALLATION
Patton's Model 503P and 503PC units are simple to install, and
require no user configuration. Follow these installation steps.
1. Turn off your PC/printer’s power and disconnect the power
cord(s) from the wall outlet(s).
2. Unplug (disconnect) the existing connection between the
parallel cable and your PC/printer’s parallel port(s).
3. Install the Model 503P between the parallel cable and the DB-
25 parallel port. Install the Model 503PC between the parallel
cable and the Centronics®-36 connector of your parallel
printer. For best results, both protectors should be used–one
at each end of the cable.
3
APPENDIX A
PATTON MODEL 503P AND 503C SPECIFICATIONS
LInes Protected:
Model 503P protects 24 lines on the DB-25
parallel interface; Model 503PC protects 34
lines on the 36-pin Centronics® interface.
Peak Power
Dissipation:
1500 Watts for up to 1 msec
Clamp Voltage:
503P 6.8 V; 503PC +8, -3V
Grounding:
Surge energy diverted to chassis ground
through metal D-shell (or 36-pin
Centronics®) connectors. Alternate ground
connection for Model 503P provided by
external grounding wire.
4
