In the fast-developing society of modern economy, the electronic products we use are getting more and more refined, and various parameter indicators are becoming more and more strict. When performing small batch equipment or industrial automation tests (for example, certain performance tests are required before the product leaves the factory), it often means testing a large number of repeatability indicators. Most of the desktop digital oscilloscopes on the market have the Pass/Fail function, which can easily do this. It can automatically capture abnormal signals that do not meet the set requirements, freeing engineers from observing a large number of signals. Engineers complete the test work more efficiently. So how do you implement an Pass/Fail test with an oscilloscope? Below we will give detailed test steps for reference. This example uses the Dingyang Technology SDG2000X signal generator and the SDS1000X-E/SDS2000X digital oscilloscope to simulate the practical application of the Pass/Fail function. (Connection method as shown) First, we use the signal source to simulate the actual regular output (here the analog product is a good indicator), output a 2V, 1KHz square wave, input to the oscilloscope, and then enter the Pass/Fail function on the oscilloscope operation interface. The detailed operation steps of the oscilloscope are: 1. In the configuration settings "UTIlity" select "pass test" - "allow test"; 2. Select “Rules Settingâ€, select the horizontal adjustment and vertical adjustment range of the X and Y axes (the adjustment range is the coefficient of the current gear position), and set the conditions that meet the standard by 'rule setting'. The settings used in this example: The time base gear position is 500μs and the amplitude gear position is 500mV; The X-axis coefficient is 0.12 div, which allows the pass range of 0.12 current time base gear positions (500us*0.12=6μs); The Y-axis coefficient is 0.20 div, which allows a pass range of 0.20 current amplitude gears (500 mV*0.2=100 mV); 3. Select whether to enable the display information (the display information will be displayed in the upper right corner of the screen, the number of frames passed and failed, and the total number of frames), the failure will stop (the acquisition will stop after detecting the failure signal) and whether the failure signal is detected. a beep sound alarm prompt; 4. Select the channel merging function in the signal source, and add a 10Hz, 200mV pulse signal as the abnormal signal (the analog product is the indicator of defective product). Whenever this pulse appears, the signal will exceed the previously set capacity. The template is limited, the system will capture the abnormal waveform, and notify the tester by stopping the acquisition and beeping. Click the Back and Open Operation softkeys to start the test function. Next we can see the output of the following figure in the oscilloscope:
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