Spectra III , kbd300a controlling from both

[tomeb 0]

Hello –

 

 

 

I have a customer who has 2 Spectra III’s, part # SD5318-PG-E0. He wants to hook them up to a KBD300A and an existing DVR (model # Capture XDR1600).

 

 

 

We have the DVR set for Pelco-D, and the DVR has a RS485 output. When he has the two spectra’s connected directly to the DVR, he can control both camera’s. When he has the two spectra’s attached only to the KBD300A using the KBD-KIT, he can control both camera’s.

 

 

 

The problem seems to be when he has them both hooked up. When he power cycles after connecting up this way, initially he does have control with the KBD300A. As soon as he tried to control the camera through the DVR, however, all controls lock up on both the DVR and the KBD300A. When he has them both hooked up, he has the RS485 TX+ and TX- on the dvr going out to the KBD-KIT attached to Terminals 1 and 2 (Tx+ and Tx-).

 

 

 

Can anyone advise on what we might be doing wrong here?

 

 

Thanks All

 

-tomeb

[jisaac 0]

this may be wright may also be wrong. Just a thought. But doing it that way does not have your communication terminated correctly. You can daisy chain several controllers through 1 of the kbd kits without any problems but when you try to combine the dvr's communication output and the controllers you have issues. I believe that they have a box that you have to go to in order to control with both dvr and controllers.

You will problem need a something like one of their video servers or one of their video multiplexers

[shropna 0]

You can use that data manager from Pelco:

http://www.pelco.com/products/default.aspx?id=266

Or that from Sennetech:

http://www.sennetech.net/manuals_pdf/SCM/scm-pelco-22.pdf

[trainerDave 0]

CM9760-DMR

Problem solved.

[Bob 0]

We have used the 9760 in may cases. It allows up the coax control to pass by the loop thru and also 485 inputs to work at the same time.