Re: PTZ info

[Jim <alarminex@xxxxxxx>]

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-117dccb1b=
1b5@xxxxxxxxxxxxxxxxxxx > On another CCTV job coming up, client is asking f=
or PTZ camera. Last time > I installed a PTZ camera ( many years ago) I nee=
ded multiple conductor > cable and a controller to operate the PTZ. From wh=
at I can see now it's > done through RS232 connection. I'd appreciate any i=
nformation anyone has > on how PTZ works nowdays. > Two or four wire connec=
tion? > > What is the power source ..... same as the camera I presume.Do yo=
u need > larger conductors for power because of the additional power requir=
ements > of the PTZ? > > What about control from the DVR locally and remote=
ly via IPhone through > the DVR? Are there different signal/format protocol=
s? For instance, will > one manufacturers PTZ camera work with any other ma=
nufacturers DVR or are > is there no standard and you have to match DVR's a=
nd PTZ's ?? > > If using baluns can a single Cat5 handle video, power and P=
TZ? 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 e=
ither RS-RS 422 over a single twisted pair for control, or in some cases (l=
ike Spectra Dome) they can have control over the same coax as the video. Al=
so, 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 fu=
ll control capability over twisted pair locally and by remote, and 95% cont=
rol over coaxitron. Client software and web interface both give access to P=
TZ controls, but PTZ control for this pair does not seem to be fully integr=
ated 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 Ca=
m Viewer Lite will access DM and other brands of DVR, NVR, and IP camera ma=
king it more flexible for many of my customers. -- Bob La Londe The Securit=
y Consultant=20


I use Speco DVR's but pick and choose my cameras depending upon the applica=
tion. I've found Speco DVR's to be quite hardy. Some out there for over 5ye=
ars without even a hard drive change. I have yet to ask Speco about their P=
TZ protocol but thought I'd pass it through here first to gain a little ins=
ight about the subject before I talk to them.