mrtae

hi rory & all, I swaping the card to other PC, the result is still the same. Furthermore i did try to connect the camera direct to TV AV, the result is good. but to GV card really poor quality. i will send for repair. Thanks for everyone input & advice. Appreciate that very very much.

The pigtails here mean the wire with VGA connector to BNC which come along with the Geo card right? correct me if i am wrong. Yes, the correct format been us (PAL).

I will try different computer this weekend. Initially using separate adaptor for each of the cameras. Even try to use 16channels cctv power distributor. Same result. Last night i did try, i connect the camera into the TV AV input, the camera seem to be good quality. No ground loop. Seem like the GV-1480 card itself got problem? how to further confirm the card got problem or not? if different computer also same problem, can this conclude card itself got problem?

Soundy, Thanks for your input & it's really valuable to someone who facing the problem like me. i will check out & adding more grounding. what is the suitable measurement tool that i can use to measure this so call Gounding Loop? if i use multimeter, i think i can only measure the connectivity & resistance? Any good Gounding-Loop Isolator to recommend?

ok...so this mean the grounding loop cannot be resolve & no way to overcome this from end user at all?

Thank for reply. Yes, you’re right. The more camera connect into it, the fastest the poor quality will be. But the camera eventually is a good quality camera, the picture quality is sharp. I don’t know, maybe I am not that expert in this area. The site is *www.inox.com.my (it’s down for construction at this moment) But last time I don’t have this problem. But some of those weatherproof IR camera come with the stand metal bracket & recently I also getting a number of new IR Dome which the body is metal too. So what should I do? Kind of frustrated been keeping changing this & that but problem can't be solve.

Dear 501 & All, My problem almost the same symptom as mention by ‘Bunny’. Not sure how your problem been solved? I saw you message on 'Try a ground loop isolator', how should I doing that? Is that just pull a grounding wire connect to backplane on GV1480 PCI metal plate? Or should I only grounding all together on the BNC connector that connect to the port? I try to use separate (individual adaptor) & 16 channels power distributor for each of the camera, no help. Same symptom. BTW, my system detail as below: -GV-1480 -Windows 7 - 32bit (Geovision V8.4) -Motherboard Gigabyte (Model need to check again) -Pentium i3 -Onboard Graphic -4G RAM The picture as attach is the example what I am facing right now. It’s showing 2 camera with same horrible symptom. The more camera you connect into the card, the fastest the poor quality will be. Let me know any further info i need to provide. Pls help! Rgds, Tae