We have a Video Insight VJ240 system with 3 cameras running.

Earlier this week our PTZ function stopped working. This happened once before and we found that the Point Of Sale feature had gotten turned on. We checked that and it is not turned on.

We operate the cams directly from the PC, the web function has never been enabled.

Any suggestions about what to check next will be appreciated.

Thanks, Larry

Call there Tech Support...... They are very good.

How are you connecting to the PTZs? Onboard serial ports, USB-to-serial adapters, or other type of serial interface? Are you using RS-232, RS-422 or RS-485?

I've seen a problem when using RS-232, where you have to connect the camera using proper polarity with the power down, power the camera up, then reverse the polarity on the serial wires, after which it works fine. Sometimes it just works, but sometimes this trick is required.

If you're using an RS-232 to 422 converter, it shouldn't be a problem.