twister

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

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