pelco keyboard & software telementry

[ronbo 0]

this may also be moved into geovision forum but lets start hear first,

 

we will be getting the Geovision 1240 card with the nessissary PTZ card

 

we have a pelco 300A keyboard which i will be connecting in direct mode now will be controling 3 pelco domes in total.

 

my question is, will using both the pelco keyboard and the 8.3 geovision software to control the domes cause any kind of problem?

 

any thoughts welco

[DaveM 0]

If you are going to be connecting the controller outputs together, then check out this posting:

 

http://www.cctvforum.com/viewtopic.php?t=15613&highlight=

 

Dave

[hardwired 0]

The heavy-duty solution would be to use the Pelco CM9760-DMR data merger, it will also allow merging D and P protocol streams, but it is awfully expensive. Definitely try the diode way first, but I used this to distribute out to 12+ Spectra's with no problems.

[ronbo 0]

ya they are very expensive for what they are, would it be fine if i just use one or the other i imagen it is as there is no data flowing from different transtitters?

[survtech 0]

I'm pretty certain the GE/Kalatel KTD-312 will do the same thing as the Pelco CM9760-DMR and it is a bit cheaper: approximately $230-240 vs. Pelco's $400+.

 

And no, you can not connect two controllers simultaneously to the same line. That could short out one or both since they may put a continuous DC voltage on the line, even if there is no control signal being sent.

[ronbo 0]

i can never understand why matrx are so expensive, i suppose appart from the diode method a double poll switch for the operator to press would alow him to switch between the two if one failed.

 

come to think of it i cant understand why pelco is so expensive, i mean 350 quid for a keyboard which looks like it came with an Atari or Commador 64?