Efficiently Measure RS232 Baud Rate with an Oscilloscope
|
|
|
This issue will share a practical technique: directly measuring the baud rate of RS232 serial communication using an oscilloscope. This method allows for quick verification of communication parameter accuracy with just a standard oscilloscope, making it suitable for hardware debugging, fault diagnosis, and other scenarios. |
|
|
Connect the signal: Attach the oscilloscope probe to the RS232 pin and connect the ground wire to GND. Capture the signal waveform using the Auto function. |
|
|
Set trigger: Configure trigger conditions (e.g., data bits, baud rate) to display complete data frames stably. |
|
|
Measure bit width: Use the cursor function to accurately measure the time width of a bit (e.g., measured as 104μs). |
|
|
Calculate the baud rate: The baud rate is determined by the formula Baud rate = 1 second / bit time (e.g., 104μs corresponds to approximately 9600 baud). |
|
|
Protocol Decoding Verification: If the oscilloscope supports protocol decoding functionality, data accuracy can be further verified. |
|
|
Company:Qingdao Hantek Electronic Co.,Ltd
Website:www.hantek.com
Tel:+86-532-55678770/72/73
Email:support@hantek.com
Address:Building 35, No. 780 Baoyuan Road, Qingdao, Shandong, China |
|
|
|
