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Posts posted by uaichina

  1. If protocol, baud rate and address all right between DVR and PTZ. There are two kinds of problems may lead to PTZ out of control.


    1. The RS485 chip on PTZ can't work with the RS485 chip on DVR.

    2. The distance is a little far from DVR to PTZ. The RS485 signal from DVR can't touch PTZ. At this time, you should add one RS485 repeater.

  2. Hi


    Not voltage,you need to test the Max. current the PSU supply. As far as I know, some supplier print DC12V 2A, but the ture current is only about 0.6A at most. This kind of PSU is very easy out of work.


    You'd better find one DC12V 3A PSU to test your camera again.




  3. If the camera can support both DC12V and AC24V, there must one bridge chip inside which can transform 24V to be DC12V.


    If the distance from PSU to camera is closed, you'd better use DC12V that can make the camera working more reliable.


    If the distance from PSU to camera more than 2 meters, you should select AC24V for the transmission distance of AC24V is much longer than DC12V.




  4. Possible problem 1: Camera module video output problem. There is one output capacitance on the video output circuit. If this capacitance is weak, camera module will lost image after minutes working.


    Possible problem2 : The votlage to camera module less than 9V. Sometime, the problem is from PSU, but if the pan/tilt still can be controlled, the PSU must be good.


    Normally, the working voltage of camera module is 9-12V. (Only SONY can suffer up to 15V). If the working voltage less than 9V, camera module will lost picture, but still can zoom in and out, just the main chip out of work.


    There are one 9 pin cable which be used to connect camera module and main PCB.

    1 RXD; 2 TXD; 3 GND for (RXD and TXD); 4 DC IN; 5 GND for DC IN; 6 VBS OUPUT; 7 GND for VBS; 8 V LOCK PULSE; 9 GND for V LOCK PULSE


    You'd better take a check with the output voltage between PIN 4 and PIN 5. If the voltage less than 9V or more than 12V, you'd better stop wasting time on this PTZ. Already out of your ability to repair it.




  5. Seems the problem is from the power board of IR led. The power board in charge of power supply to all LED light.


    I suggest you take a check with the PSU of camera kit also. If the power supply unit can't supply enough voltage to camera, the Led power board can't supply enough current to IR LED also. Maybe the distance from PSU to camera is far a bit. Check the output voltage at camera side.


    Swann always focused on cheapest CCTV products. No surprise with the problems.





  6. Which kind of CCTV product you are looking for?


    Tiandy is good with PTZ and matrix, but high price. Dahua, HIKVISION are good with recording equipment, box cameras are just so so. Dali is IR and DVR.



    Maybe you should come to CPSE





  7. You'd better send it back to your supplier.


    I met the same problem in before. The built-in system can't begin to work. The only way to make it work is re-write program. That's like we install WINDOWS operation system. If the operation system installation with problem, the system can't work.




  8. There several setup must be the same between DVR and PTZ as followed:


    1. Protocol: For you is Pelco-D

    2. Baud rate: For you is 2400bps;

    3. Address: For you is address 1;

    4. Series port bit : Normally is 8;



    Please check your DVR. Is it totally the same as PTZ setup? If still out of control, please check the RS485 A and RS485 B cable. Make sure the A and B is connected on the right port.




  9. Which PTZ outdoor cameras on the market generally have the fastest speed and greatest capability of focusing on a subject quickly and clearly?


    Ive seen a few that take a few seconds to focus clear;y on the subject your tracking. Id like to concentrate on the one that snap into focus near instantly.


    any recommendations?





    This Larry Yang

    As your question, you need think about two points; 1. The fast turning speed of high speed pan/tilt dome. 2. one good camera module which support quickly auto focus.


    Normally, we only need PTZ to trace human or car on application. So the moving speed of PT dome depand on where you want to install it, and the distance from PTZ camera and be traced objection.

    Our high speed dome camera can turning up to 220 degree per second at 1X zoom. That's fast enough.


    About the well auto focus, I suggest you take a check with our 27X camera module. This module support WDR functions, can focus well within 0.2 second.




    Larry Yang