PTZ malfunction may exist in the following aspects of
1. Beyond the control of PTZ
2. Beyond the control of decoder
3. Some of the functional can not be achieved
4. Code converter signal lights do not work

Analysis:
Yards turn lights do not flash
Software settings (lights do not flash, mainly code converter does not work, start with the software set up to address this problem)
1. Software decoder settings (decoder protocols, com port, baud rate, parity, data bits, stop bits)
2. Replacement of a com port (check the com port is damaged),
3. Hardware, such as the above-mentioned settings, still can not normal use, open 9 pin to 25 pin converter interface. Check whether the connection 2-2, 3-3, 5-7, if correct, check the code converter power supply is normal (can be used multimeter for voltage and and current testing (9v, 500ma)), there is no problem to determine the code-switching devices have been The damage
Out of control for decoder

 
Free relay sound decoder.
1. Check decoder is powered on.
2. Check the code converter is drawing to a signal output 485.
3. Check whether the agreement is set up correctly decoder
4. Check baud rate settings are consistent with the decoder (check the address code settings are consistent with the selected camera (detailed drawing of Address Code decoder code table, see instructions)
5. Check decoder and code-switching device is connected the wrong cable (1-485a ,2-b; some decoder is 1-485b ,2-a)
6. Check decoder is working properly (the old decoder power one minute electricity, whether there is self-checking sound; software control PTZ, the decoder up, down, auto and other port and there may be a voltage change ptcom mouth, change case determined in accordance decoder 24vor220v, some of the decoder switches to these ports will be the amount of signal change), if the decoder is working correctly, otherwise the decoder fault
7. Check whether the decoder fuse has been burnt.

Beyond the control of PTZ
1. Check whether it is normal above the sixth
2. Decoder 24v or 220v power supply port output voltage is normal
3. PTZ directly to the up, down, with the ptcom power lines, check whether PTZ work properly.
4. Check whether the connected the wrong power supply interface
5. Check the circuit is connected the wrong (old decoder is up, down and other lines and ptcom PTZ power directly to each line and each line of PTZ cameras and can be a direct connection; some decoder as an independent power supply interface

PTZ control part of the function can not be used
1). The interface can not operate (can not click or click on without any response)
1. According to the above steps to check code transfer
2. Install the appropriate patch for PTZ control
3. Notify the supplier
2). Click to switch lights or a time code decoder ring inside a relay, but can not control some of the functional
1. Attorney can not control the function part of the wiring is correct, PTZ, lens and other equipment is intact, whether the decoder function of the port voltage, switch output is normal
3). PTZ control of abnormal movements
In case of rotation can not stop, the first thing a separate test of the port (the port directly to the electricity, control), such as normal, then check the decoder, the corresponding port is working properly.