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Frequently Asked Questions on PTZ Control

2011-10-26

1. Why can't the PTZ control the rotation manually (manual control will burn the fuse), but can control the rotation automatically?

Possible causes: First, check the PTZ controller, second, check the wiring between the PTZ and PTZ controller, and third, check the PTZ itself. Then, replace a working PTZ controller, control the PTZ controller, observe the condition of the controller, and check the wiring problems. If the connection between the PTZ controller and the PTZ is wrong, you can also make the PTZ controller Burn out, detect the PTZ, do not transmit through the cable in the middle, directly connect the PTZ to the PTZ controller, and observe the working condition of the PTZ controller; the inspection in the above three aspects should solve the problem.

Detection object: PTZ controller, PTZ control line, PTZ

2. When using a keyboard to control an externally decoded PTZ, why can't I use the small keyboard to control the automatic?

Through the small keyboard BL-KB102 to control the PTZ with external decoding, it is found that although the PTZ can be controlled to rotate, but when the control is automatic, the PTZ stops in one direction after reaching the end point. You can't use the keyboard to realize the auto function with an externally decoded dome camera. The auto function can only be implemented on a PC -type host, but if you use a dome camera or a gimbal with built-in decoding, then the This function can be realized on the keyboard.

Conclusion: The keyboard can control the built-in decoding dome camera to realize the automatic function, but the external decoding can not use the keyboard to control the automatic function. The external decoding dome camera or PTZ can only realize the automatic function on the PC -type host.

3. The system can work normally before, but why aren't nine gimbals controlled at the same time (embedded video recorder)?

Possible causes of failure: 1 , 485 control voltage output, 2 , 485 control voltage transmission cable, 3 , baud rate, protocol and address code of the PTZ and host. The output voltage of the host 485 is abnormal, which can cause all PTZs to fail to control. Check whether the output of the host 485 control voltage is normal. Check the 485 control transmission cable. The gimbal cannot be controlled. Check whether the baud rate, protocol, and address code of the gimbal are consistent with the host. It may be that the gimbal cannot be controlled by artificially modifying the host parameters.

Detection object: host 485 control voltage output, 485 control line, baud rate, protocol and address code between PTZ and host

4. Why can't I control the externally decoded gimbal with PC DVR ?

Possible causes of failure: 1. Host 485 control voltage output. 2. Whether the baud rate, protocol and address of the host software are consistent with the decoder. 3. The working voltage of the PTZ. 4. The connection between the decoder and the PTZ . First, check the 485 control voltage output. The abnormal or unstable output voltage can make the gimbal uncontrollable. Check whether the baud rate, protocol and address code of the host software are consistent with the gimbal. There is a difference between 220V and 24V ), there is voltage output, the gimbal will not turn, it is a problem of the gimbal, no voltage output is a problem of the decoder, check the connection between the decoder and the gimbal, there are more If the wrong terminal is connected, the gimbal will be uncontrolled.

Detection object: 485 control voltage, the connecting line between the PTZ and the decoder, the working voltage of the decoder, the protocol, address and baud rate of the decoder, the PTZ, the decoder

5. Why does the black bar appear on the screen when the gimbal rotates, and sometimes the screen is dim?

Possible causes of failure: 1. The connector is not in good contact. 2. The line is in poor contact. 3. The product is damaged. When the gimbal rotates, the line will rotate. During the movement, if the connector or the line is not in good contact, the screen will flash with a black horizontal bar, and sometimes there will be no video signal, because the horizontal direction will produce It may also be a problem with the gimbal. If the gimbal is severely aged, a magnetic field may be generated, and the picture will naturally be affected by the magnetic field to cause the above failure.

Detection object: PTZ, line, connector

6. The PTZ control must first ensure that the settings are correct. This requires reference to the product manual. Here I briefly highlight a few points. First, enter the PTZ control settings , as shown in the following example:

First you need to import the correct protocol, we recommend more commonly used ones, such as PELCO-D .

Then you need to set the corresponding address and baud rate

Then set the same on the PTZ decoder as the host.

There are several reasons why PTZ cannot be controlled in general:

Protocol settings are incorrect

Bad line contact or reverse connection

RS-485 conversion port failure

PTZ decoder settings are incorrect or faulty

Generally, the pan / tilt control responds, but the reasons for the insensitive control are as follows:

PTZ control protocol is not a standard protocol, it is recommended to try other common protocols

The baud rate of the RS-485 conversion port is not standard , and RS-485 is not compatible .

PTZ decoder failure, such as a short circuit or a component problem.

I. PTZ control issues

After consulting the operating instructions , the user must correctly set the parameters such as the address , protocol , and baud rate of the PTZ decoder , and the parameters set by the software are the same as those set by the decoder jumper . Although the PTZ protocol is in the industry There is no specific unified standard , but most of the current digital hard disk video recorders and PTZ decoders support protocols of important brands in the market , such as PELECO-D, PELECO-P, etc. If a PTZ cannot be controlled , generally first Check whether the control line is normal , and then check whether the PTZ decoder is normal . It is best to place the PTZ next to the digital hard disk video recorder for debugging , so that you can judge the problems such as the line , and then carefully check whether the settings are correct . Replacement test of a PTZ decoder . Sometimes the decoder is short-circuited or has poor contact, which may cause intermittent control or delay in control.

Second, the video signal is abnormal

The abnormal video signal is also a common problem in the monitoring system . When the signal of the channel is abnormal , the other channel needs to be swapped with the channel . If the channel is normal after the swap , and the previous channel is abnormal, it indicates that the camera and signal cable Problems such as factors , the idea is ruled out there . If it is not the cause of the camera and signal cable , then it is the cause of the video capture card on the digital hard disk recorder . At this time , you need to check whether the settings in the software are correct . If so , you can contact the manufacturer .