Orphee 0 Posted April 23, 2010 Hi everybody I have two PTZ cameras and I can't control them anymore My geovision cards are GV-1120 and GV-NET I/O I looked inside RS232 connector and saw one wire default. I don't know if the problem was here or if it's a new problem when I opened the connector. They was pin 2 and 3 connected so I supposed the third one was on pin 5 (ground) but it's always the same: no PTZ command. I put an oscilloscope on RS485 but doesn't see anything too. To verify if it was a PC configuration problem, I restored with "true image" my PC with a one year backup but it doesn't change. Have you an idear so I can find where is the problem ? Perhaps I can add this information: before, when RS232 connected and geovision shut down, PTZ cameras were going to anywhere (no signal-> random mode). I avoid this, I had to disconnect RS232 cable. But now cameras doesn't move (exept when powered on but with or without PC), even I keep the cable and shut down geovision. Thanks for help and sorry for bad english. Share this post Link to post Share on other sites
Orphee 0 Posted April 23, 2010 found : 5V1 zener diodes on GV-net are dead Share this post Link to post Share on other sites
