Re: PTZ info

["Bob La Londe" <none@xxxxxxxxxx>]

"Jim" <alarminex@xxxxxxx> wrote in message
news:a55424ef-6552-453b-a871-769625636a12@xxxxxxxxxxxxxxxxxxx
> On Tuesday, March 26, 2013 6:35:50 PM UTC-4, Bob La Londe wrote:
>> "Jim" <alarminex> wrote in message
>> news:89be7162-ade1-4660-abad-117dccb1b1b5@xxxxxxxxxxxxxxxxxxx > On
>> another CCTV job coming up, client is asking for PTZ camera. Last time >
>> I installed a PTZ camera ( many years ago) I needed multiple conductor >
>> cable and a controller to operate the PTZ. From what I can see now it's >
>> done through RS232 connection. I'd appreciate any information anyone has
>>  > on how PTZ works nowdays. > Two or four wire connection? > > What is
>> the power source ..... same as the camera I presume.Do you need > larger
>> conductors for power because of the additional power requirements > of
>> the PTZ? > > What about control from the DVR locally and remotely via
>> IPhone through > the DVR? Are there different signal/format protocols?
>> For instance, will > one manufacturers PTZ camera work with any other
>> manufacturers DVR or are > is there no standard and you have to match
>> DVR's and PTZ's ?? > > If using baluns can a single Cat5 handle video,
>> power and PTZ? I'm sure > there are distance limitation also but nothing
>> over 150 feet in this job. > > Anyone have any experience with "newer"
>> PTZ? > > Thanks. I pretty much use the Pelco Spectra Domes, but many are
>> similar. They use either RS-RS 422 over a single twisted pair for
>> control, or in some cases (like Spectra Dome) they can have control over
>> the same coax as the video. Also, it depends on what you are integrating
>> it with. I use mostly Dedicated Micros DVRs and they integrate nicely
>> with Spectra Dome cameras and have full control capability over twisted
>> pair locally and by remote, and 95% control over coaxitron. Client
>> software and web interface both give access to PTZ controls, but PTZ
>> control for this pair does not seem to be fully integrated in most of the
>> smart phone aps except one that is server subscription based. I have not
>> fully tested the newest ap from DM as Robert Chou's Ip Cam Viewer Lite
>> will access DM and other brands of DVR, NVR, and IP camera making it more
>> flexible for many of my customers. -- Bob La Londe The Security
>> Consultant
>
>
> I use Speco DVR's but pick and choose my cameras depending upon the
> application. I've found Speco DVR's to be quite hardy. Some out there for
> over 5years without even a hard drive change. I have yet to ask Speco
> about their PTZ protocol but thought I'd pass it through here first to
> gain a little insight about the subject before I talk to them.

Just about everybody supports Pelco-P protocol with their DVRs.  The biggest
problem is actual Pelco PTZs are pretty expensive.