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twister

Help! Pan & Tilt don't.

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I'm new to cctv, having just bought a PTZ camera. I've got the camera working and can control its zoom/focus,etc, but I can't get control of the PTZ housing.

 

I'm using a slightly complicated setup as I have to use an IR remote control.

 

I've got hold of a PT-YPZ-485 RS485 to IR converter, which works on Pelco D and, as I said, controls the camera functions OK. Just once, for a minute or so, it controlled the pan and tilt, but no longer.

 

The housing circuit board has a test button, which sends the camera through a full pan and tilt range, so there doesn't appear to be a physical blockage.

 

I've checked for loose wires. I've tried altering the baud rate (2400,4800,9600)

The camera is definitely on ID#1 and so is the controller.

 

Has anyone got any ideas?

 

Thanks

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I believe Pelco D only works on 2400 Baud, so you'd be right to keep it there. What model of camera is this, and what are you using to try to do the Pan/Tilt?

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Thanks for the replies.

 

Typically, both the camera and dome have no indentifiable model numbers.

I think they are both generic chinese models.

 

I have specifications for both, which are as follows:

 

Specifications of PTZ Camera

 

Image pick-up Device 1/4" SONY COLOR CCD

Signal System PAL

Effective Pixes PAL:752(H)x582(V)

Horizontal Resolution 480TV lines(color)

600TVlines(black/white)

S/N Ratio More than 48db(AGC Off)

Lens Dimension 3.25-88mm

Focusing System Auto focus

Minimum Illumination 0.1Lux(General) 0Lux(IR Sensitve ON)

Zoom 27x Optical Zoom 10 x Digital Zoom

Video Out BNC

Shutter Speed 1/50(PAL) -1/100,000sec

Video Output 1.0Vp-p75O

Scanning System 2:1 Interlace

power Requirement DC 12V/350mA/4.2W(Max)

Sensing Area 3.6mmx2.7mm

 

 

Specifications of PTZ Dome

 

Dimension 7"

Horizontal rotation range 0-355 degrees

Horizontal speed 20d/s

Vertical rotation range 0-90 degrees

Vertical speed 10d/s

Used Environment Indoor/Outdoor

Environment Temperature -30oC-50oc

The upper cover material ALLoy

The Color of the upper cover Smoky gray/Transparent

Control Interface RS485(Selectable)

Control Built-in digital decoder for multi-protocol control

Power Requirement AC 24V/10W(AC24V/20W for heater)

Weight 5kg

 

I doubt this helps much. If there is any more information I can provide which may be of use, please tell me.

 

The thing I really can't understand, is why the pan and tilt worked for a short while, then stopped working. The camera slipped very slightly on its screws, so we powered off, tightened the fixing screws and powered on again.

 

From that moment, only the camera functions worked. This suggested a loose wire, but having looked really hard, I can't find any.

 

The camera ID and protocol seem to be Ok.

 

The pan and tilt motors work during the 'test' procedure.

 

The batteries in the IR remote control are Ok.

 

What could I be missing? Any ideas?

 

Thanks

 

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