Re: multiple PTZ on dvr?

["Hakma" <hakma@xxxxxxxxx>]

One cable daisy chain to all the cameras.


"Chuck" <cteller@xxxxxxxxxxxx> wrote in message
news:ioihv2$9ku$1@xxxxxxxxxxxxxxxxxxxx
> Bob La Londe wrote:
>
>>
>> I think you just assign an address to each camera.  Look over your docs.
>>   I do Pelco PTZ over RS422 on Dedicated Micros DVRs that way regularly.
>>   Each one has a unique address.  Alternatively, if they support control
>> over coax (coaxitron) then whatever camera is selected receives the
>> control signals.
>>
>> Contact Pelco if you are stuck on their equipment and ask them.
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> The manual shows a single connection to a single PTZ camera.  The
> protocols
> do talk about addressing as you mentioned so I can understand the
> communication scheme.
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> Unfortunately, there is only the single set of pins D+ and D- to address
> all
> cameras.  In all fairness, Speco included a DA-15, D-sub solder-type
> connector to mate with the rear connector on the DVR.  Unfortunately, they
> did not include a breakout box or cable.  It's a bit primitive.  I'll call
> them to clarify later.
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> Overall, I think I would be better served to find a ptz controller that
> was
> a little more refined and just use the dvr for display and record.  If you
> could recommend any gear, I'd sure appreciate it.  I sure wish I could
> have
> seen this coming -- it's a real good argument for using a pro......
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