How to test The DX8100 RS422 Card

Issue

The RS422 card on the DX8100 doesn't seem to function.

Product Line

Pelco Video Management

Environment

  • DX8100 all Models

Cause

Hardware failure causes PTZ outputs and keyboard input communications to fail.

Resolution

Connect a CAT5 cable to the communication ports 1-4 on the back of the DX8100 that is non functional.  using the 568B standard place the VOM test leads to the trasmit pair.  There should be a constant 3-6 Volts DC.