What is a PTZ? How to Choose a PTZ?

After a period of use, Pan Tilt Zoom  devices may experience some malfunctions. How can you quickly identify the cause once a failure occurs? Here, Shandong Yunzhuan Electromechanical Technology explains how to pinpoint where the issue lies.

1. Code Converter Indicator Not Blinking

   Software Settings (If the indicator does not blink, it usually means the code converter is not functioning. Start by checking the software settings.)

   1. Decoder settings in the software (decoder protocol, COM port, baud rate, parity bit, data bit, stop bit).

   2. Try switching to another COM port (to check if the COM port is damaged).

   3. Hardware: If the issue persists after the above settings, open the 9-pin to 25-pin converter interface. Check if the wiring is correct (2-2, 3-3, 5-7). If correct, check whether the code converter’s power supply is normal (use a multimeter to test voltage and current (9V, 500mA)). If no issues are found, the code converter may be damaged.

2. Unable to Control the Decoder

   No relay sound in the decoder.

   1. Check if the decoder is powered.

   2. Check if the code converter is set to output a 485 signal.

   3. Check if the decoder protocol is set correctly.

   4. Check if the baud rate setting matches the decoder (also verify if the address code setting matches the selected camera. For a detailed address code table, refer to the decoder manual).

   5. Check if the wiring between the decoder and the code converter is incorrect (1-485A, 2-B; some decoders use 1-485B, 2-A).

   6. Check if the decoder is functioning properly (for older decoders, disconnect power for one minute and then reconnect to see if there is a self-test sound; when controlling the PTZ via software, there should be voltage changes between the decoder's UP, DOWN, AUTO, etc., ports and the PTCOM port, varying by decoder—24V or 220V. Some decoders may show switching signal changes on these ports). If so, the decoder is working; otherwise, it is faulty.

   7. Check if the decoder’s fuse is blown.

3. Unable to Control the Pan Tilt Zoom 

   1. Check if item 6 above is normal.

   2. Check if the voltage output from the decoder’s 24V or 220V power supply port is normal.

   3. Directly supply power to the PTZ’s UP, DOWN, and PTCOM lines to check if the PTZ functions properly.

   4. Check if the power supply interface is connected incorrectly.

   5. Check if the circuit is wired incorrectly (for older decoders, the UP, DOWN, etc., lines and PTCOM directly power the Pan Tilt . Connect the lines directly to the camera and PTZ; some decoders have independent power supply interfaces).

4. Unable to Use

   1. Unable to operate on the interface (no response when clicking or clicking does nothing).

      a) Check the code converter as described above.

      b) Install the corresponding Pan Tilt  control patch.

      c) Contact the supplier.

   2. When clicking, the code converter indicator lights up or there is a relay sound in the decoder, but some functions cannot be controlled.

      a) Check if the wiring for the uncontrollable functions is correct.

      b) Check if the PTZ, lens, and other devices are intact.

      c) Check if the voltage and switching output of the decoder’s function ports are normal.

   3. Abnormal PTZ movement during control.

      For example, if the rotation does not stop, first test the port individually (directly supply power to the port for control). If it works normally, check if the corresponding port on the decoder is functioning properly.

5. Video Recording Shows Mosaic Patterns

   This is a software issue; please consult the supplier.

Apart from the above issues, Pan Tilt  failures may also include other common problems. For example, the PTZ may work intermittently, which is often due to incorrect installation (e.g., mounting a ceiling Pan Tilt on a wall), leading to improper operation and potential long-term damage. Another common issue is interference, which often manifests as the PTZ continuously rotating left or right, or rotating on its own without control. This is usually caused by signal attenuation and interference during transmission.

By following the troubleshooting steps above, you can generally identify the problem. If the issue remains unresolved, consult the supplier or seek professional assistance. If your Pan Tilt Zoom has an unresolved failure, feel free to contact us. KONWER Technology has decades of experience in Pan Tilt research, development, and production and can provide you with a suitable solution.