如何将无线视频数据链路调制解调器的RS232改为TTL

修改TX900的内置转换板将RS232更改为TTL (UART)

The wireless video data link modem default is TTL. Which is the core module of TX900, which is a long-range wireless video transmitter and receiver.

If the client does not have a specific requirement, the default data port of TX900 is RS232.

The flight control, 皮克斯霍克, and the data port need TTL.

So how do we change the RS232 to TTL of the long-range wireless video data transmitter and receiver?

Please open the metal of the TX900, you will find the board like the one below.
The left side is TTL, there are more 6pcs zero resistors and no two chipsets.
The right side is RS232, there are more two chipsets and no 6pca zero resistors.

TX900 总线输入 连接到地面上的遥控器.
TX900 sbus 连接到空中飞行控制器.

New RS232 to TTL data interface adapter board

If your order was shipped recently and the TX900 is equipped with our updated and optimized adapter board, please follow this method.

Please check the screenshot below. If you want to change the D3 serial port to TTL level, remove R1, R2, R20, and R22, and solder 22 ohm resistors (要么 0 欧姆) to R13 and R15.

Modify RS232 to TTL (UART) by adding an external adapter board

Change RS232 to RS485

Because of the small size of the tx900, it is difficult to directly convert the RS232 to the RS485 module internally. If you need the RS485 data interface, we can add a converter box outside the box as shown in the picture below:

TX900 Data Port Define Suggestion

使用SBU界面的客户基本上连接到无人机; 除了使用SBU界面, 这种需求还需要连接到飞行控制的遥测接口TTL. 现在, 客户更喜欢通过网络连接连接到遥测界面. D1不能用于sbus或串行到网络连接, 因此，只有D3串行端口才能连接到飞行控制的遥测端口. 因此, 对于需要SBU界面的客户, 建议将D2用于SBU, D3使用TTL级别, D1取决于客户.