DVR to LCD monitor wireless transmittion

[advanet123 0]

Dear All,

 

Interesting just out of curiousity, if all the six cable are damage ( I run the cables) if it is really damage, who is going to bear the extra cost of re-running the cable, cutting the pave road etc etc

 

KK

[Soundy 1]

I suppose that would depend on where the damage happened, and who caused it. If someone with a backhoe crushed the conduit and squashed the wires inside of it, then the backhoe operator would be liable... for example.

[tomcctv 190]

Dear All,

 

Interesting just out of curiousity, if all the six cable are damage ( I run the cables) if it is really damage, who is going to bear the extra cost of re-running the cable, cutting the pave road etc etc

 

KK

 

 

the best test you can do on your existing coax is to use one of these. this will tell you if your cable is damaged.

[advanet123 0]

Dear Tom,

 

What are those thing call?

How do I test them with it?

Can I buy from you if I need to?

 

Regards

 

Kelvin

[rory 0]

How about a computer and view the cameras over the network?

Middle of page 1, Rory:

 

5)Another method I did was running a network switch connected from the 2 DVR and join to the Guardhouse forming a local LAN network without internet access. I run 2 PC at the guardhse to run the DVR Central management Software. But customer (fussy) insisted that it is too laggy.

my bad, thanks

 

Maybe he could look at upgrading the network if he needs to then, if its that slow, may end up being cheaper. I have clients just watching their 16-channel DVRs locally over the network and it is fine, real time just about. Though maybe its the DVR he is using and I guess that will cost too much to replace.

[Soundy 1]

I'm thinking that even if all four coax runs are damaged, the Cat5e must be in at least pretty fair shape for ethernet to function over it, so it should work fine with two pair of baluns.

 

The latency he saw on the network may be the DVR, or it may be the client, or even the PCs themselves that he's using to drive the monitors.

[advanet123 0]

Hi,

 

I took Some pictures already but not sure how to upload it. Anyway, change to balun through cat 5e and through converter, though the double image is still there it is no longer as visible unless you really strain your eye to see. Anyway thanks for all the help, I am still no so sure if client can accept, will wait for news.

 

But for those still interested to see how the picture look like, let me know how to post it, as I can t tell where the problem is, I am still not satisfied.

[Soundy 1]

Are you using baluns on both ends of the run? They do need to operate in pairs. What brand are they? We had an instance here on the forum recently, where someone had a "pair" of baluns that didn't work as well as they should... found out that one of them had the necessary transformer, but the other was just wired straight-through.

 

You can use the "attachment" function at the bottom of the message to add pictures, you just need to make sure they're within the stated size constraints 150k per file).

[advanet123 0]

Dear All,

 

This is 2 different picture that I took for references

[Soundy 1]

That phenomenon is known as "ghosting". It's a good indication of either cheap cable, or damaged cable, or possibly poor/incorrect termination.

 

Baluns over the Cat5e wire should avoid that.

[advanet123 0]

Dear Soundy.

 

Thanks again, now my picky customer complains that there is running horizontal line running up the LCD montiors(Both). I read through the web, they are saying ground loop problem? Can I solve it by adding ground loop isolator?

 

regards

 

KK

[scorpion 0]

I agree with the ground loop issue between the DVR location and the guard shack.

 

Using the VDR will break the loop and this is why it will work.

[rise 0]

Dear advanet,

 

in case if you install there monitors with BNC inputs:

i would like to recommend you to try this stuff - http://www.kramerelectronics.com/products/model.asp?pid=35&sf=82

 

It converts composite video (BNC input) in UTP and then back in composite (BNC output). Indeed it has 2 inputs and 2 outputs as you need.

 

We have some projects with this equipment and it works stable without failures and images degradation.

 

If you will use VGA outputs from recorders:

 

With help of TP100AXR (http://www.kramerelectronics.com/products/model.asp?pid=1417&sf=85#t) you can connect one VGA from your recorder to the first VGA input of TP200AXR, looping VGA output on TP200AXR you can connect to local monitor (if you use it). TP200AXR will transmit the signals via UTP (limit is 200 m, further distances depend on the resolution and cable quality). At remote site you connect it to the your remote monitor. The same for second local and second remote monitor.

 

As a second variant you can consider the following: 1 Highwire QUAD (http://www.veracityglobal.com/products/ethernet-over-coax/highwire-quad.aspx) in the DVR location. You can connect Ethernet outputs from DVR to Highwire, than Highwire converts network signal for transmission through coaxial cable (on RG-59 you can have up to 270 m) and at monitors location you set up the second QUAD or you can use Highwire with signle Ethernet port (http://www.veracityglobal.com/products/ethernet-over-coax/highwire.aspx) if it's ok for you to display images at one PC

 

We use Veracity in one of our projects where Highwires transmit images from 16-megapixel cameras. Coaxial distance between two Highwires in this project is 300 m. It works stable as well. We even tried to transmit images from one 16 megapixel camera at maximum parameters - 70 Mbit/s goes through coaxial without failures.

 

I hope it helps