透過RS232修改無線視訊發射器頻率

COFDM wireless video transmitters and receivers need to have a center frequency as the wireless transmission frequency.

有時, because the frequency is subject to severe interference, it is necessary to remotely synchronize the transmitter frequency to modify another operating frequency from the receiver’s location.

The receiver is very easy to modify because it is right next to the operator. But how to modify the frequency of the wireless transmitter if it is several kilometers to tens of kilometers away?

If the transmitter is also nearby, such as when it is installed on a drone, you can modify its frequency through the parameter adjustment board or computer before takeoff. If you still need to modify the frequency after takeoff, you can only send a command to modify the frequency through another wireless data transmission system and the host computer chip, through the transmitter’s RS232 serial port. 所以, it is very important to choose a transmitter that can send commands and modify the working frequency through the serial port.

We have two different models of modules that meet such requirements.

Have you ever encountered the requirement to modify the frequency of the transmitter when deploying a project?