PTZ connection

[tallboy 0]

Can someone explain in simple English how to connect the Rs485 bus of a QSTD2408 DVR to the PCB board on a COP CD55NVT PTZ? I will be using cat6 cable and the distance between the DVR and PTZ is about 150 feet. Page 33 of the CD55NVT manual does not show exactly where to connect the A+ and B- wires and if I need to use the 120ohm resistor? thanks very much

[Numb-nuts 1]

Just a guess, under the circumstances. The manual appears to be missing diagram 9.6.2 as referred to therefore by process of elimination

I am guessing that there is an RS485 in A+ B- and an RS485 out for the purposes of daisy chaining. Get the Multimeter out, with no power applied to the camera, see if two of the connections in the terminal indicated in red are common and then if they are see if the remaining two are common and if they are, you now have to discover which pair are the ground pair. Try it and let us know if you get any success, if not don't risk it, wait until Monday and contact COP.

 

PS There are two things that make me think this is the RS485 terminal, it's proximity to the termination junpers, there are four terminals, 2 in 2 out same as on many control keyboards, and three That's all that's left. Good Luck

[tallboy 0]

Thanks for reply Numb-nuts. This is my first PTZ so please bear with me. I am re-looking at pg 33 of the manual and I see picture 9.6.2 on the bottom of page. It shows A+ connected to #2 and B- connected to #3. What I am not understanding is what does daisy chaining mean in this context? Does it mean using more than on PTZ in system? My system will have only one PTZ so does that mean that I plug the 120ohm resistor into jumper position #2 and #3 for factory default setting? Or do I use the jumper cap at all? It looks like picture 9.6.3 is saying to insert jumper cap for the daisy chaining option.

[Numb-nuts 1]

Thanks for reply Numb-nuts. This is my first PTZ so please bear with me. I am re-looking at pg 33 of the manual and I see picture 9.6.2 on the bottom of page. It shows A+ connected to #2 and B- connected to #3. What I am not understanding is what does daisy chaining mean in this context? Does it mean using more than on PTZ in system? My system will have only one PTZ so does that mean that I plug the 120 Ohm resistor into jumper position #2 and #3 for factory default setting? Or do I use the jumper cap at all? It looks like picture 9.6.3 is saying to insert jumper cap for the daisy chaining option.

 

Try without jumpers first, jumpers are usually only necessary when you have more than a single camera and even then not always.

I can see the manual's coverage of RS485 is more confusing than helpful.

 

 

If this is your first PTZ and you are not 100% sure, wait a day and phone COP, they will be only to happy to assist you.

It will be nice to know when you are in business, let us know your impressions of this camera and how you like the

image quality, zoom etc. It will be interesting to know.

[tallboy 0]

Ok thanks again. The actual installation is still one month away. Right now I am just studying the manuals and getting prepared. I will let you know how it comes out.

[Numb-nuts 1]

Once you've confirmed your settings with COP, I am sure it will all go very quickly and smoothly.

 

If you are still planning your install may I pass on some suggestions for wiring. I always use sleeve end ferrules

for wires connected into a screw down terminal like a Balun or those on your PTZ. They improve the connection

when using solid core Cat5 or Cat 6. They go on with a crimping tool and some need trimming so they fit all the way in.

 

You can get a crimp tool from ebay for about $15.00

For Cat5 you need 0.25 mm ferrules (orange or white)

and for other operations like screwing power cables into a distribution box you would need

0.5 mm (red or black) or 0.75 mm (Turquoise). Also useful when twisting three cat5 conductors together.

They are so helpful I always also use them on my car wiring when fitting alarms, or two way radio etc.

 

 

See this article I found on bootlace ferrules, you'll never use any other method.You'll also see what I mean about needing trimming shorter.

For outdoor cameras, I always coat the ferrules in 'Contralube' after they are crimped.

This prevents moisture and improves conductivity.