2. Module parameters
1. Power supply voltage: +5V (TYPE-C power supply)
2. Input and output impedance: 50 ohms
3. Output interface: SMA female
4. Minimum attenuation step: 0.25DB, maximum input power: 30dBm (1W)
5. Size: L*W=6.8*4.8CM (excluding prominent SMA) Height: 2.5CM
6. Delivery: attenuation module + TYPE-C line
7. Provide communication protocol: support USB and TTL serial communication at the same time
8. Input loss and standing wave parameters (refer to the measured value of vector network)
6. Module communication protocol (all commands are terminated with carriage return + line feed)
5.1. Send the attenuation coefficient command: change the attenuation coefficient (the end symbol is "carriage return/n/r")
The format is: att-xxx.xx
5.2. Response value signal:
The format is: attOK
5.3. When using TTL serial port communication, the baud rate is 9600.
5.4, read data format: READ (carriage return /n/r)
5.5. USB communication is STM32F4 virtual serial port, no need to set baud rate.
四、提供上位机通信软件
五、模块实测（采用矢量网络分析仪实测）
衰减0DB
衰减10DB
衰减20DB
衰减30DB
衰减40DB
衰减50DB
衰减60DB
衰减60DB
package ：
1pcx
6G Digital Programmable Attenuator 90DB Step 0.25DB OLED Display CNC ATT-6000V3.0
If you have any questions, please contact us in time, we will help you deal with the problem for the first time.