joelee148

Hi Dustmop, Here are several steps to identify where the issue is: 1. Connect the faulty camera with control kit, if you still get good image and could well control the camera, then the issue must be on the fiber cable or fiber converter. 2. exchange fiber Tx and Rx to another site where the camera control is working well. If it still works good after exchanged, then issue on fiber cable. 3. you can get good image but have issue on control, because control data is on 1550nm and video on 1310nm, should try to use OTDR on different fiber cables, compare the loss. If confirmed the loss of fiber cable is out of nominal value, feedback to the seller, they can change a better one to you. According to my experiences, you need to change a set of fiber converter to fit the fiber. Hope it helps.

I don't think the Gem IPC-0801 can run Ethernet and power up to 1km, if only Ethernet over coax, it makes sense. With POE, 200-300Meters should be the max. distance. Just my personal opinion, better double check with Gem's sales.

I am very curious and wondering how do the video/video+ptz transmit to control room when I went through from Heathrow airport to downtown Birmingham. There are cameras alongside and distance between each is about 200m. So I guess they use fibre?

I'm not too sure about the cams in question joelee. I have worked with motorway maintenance cams which had miles and miles of cabling, every so often there would be inline amps and the telemetry was transmitted down the coax(BBV). They have started using fibre optic cables now, you're quite limitless when it comes to distances - pricey though. Heathrow to Birmingham? Birmingham Midlands?? Broadband over that distance. Thanks ptzguy. Now we are useing fibre optics for all new/upgrading highways in China, just 1 core fiber can add and drop cams and run through distances. Just simple and reliable, doesn't it? Ground fibre, fusion and coax cams in, no bandwidth limitation, no delay and degradation, no adjustment, it is interesting especially a project with thousands of cams. Otherside you are right, useing fibre means a higher budget somehow. As you said, they started using fibre now, I am interesting in their fibre topological. What we are using for highway fibre transmission is called cascade video fibre optics, each node with AGC. Hope to learn more from here.

Glad to be here, it is a great forum to know before participate IFSEC again.

We have to wait until their airport reoperate.I'm living in China, very close to them, and we have many organizations that can deliver stuffs we donated. But prior to that, flights for people transfer is the most important at this moment.