All of Digilent Portable Test and Measurement Devices including Analog Discovery 2Analog Discovery 2, Analog Discovery StudioAnalog Discovery Studio and Digital DiscoveryDigital Discovery have external trigger. With triggers enabled, a dynamic waveform can be displayed as a static image. You can also capture data around or locate an infrequent event. For example, digital pulses are missing, irregular in width, or do not reach valid logic high or low levels. An external trigger uses an external signal to generate a trigger.
You can use Digilent Test and Measurement Device tutorial "Using External Triggers" to understand what trigger is and how trigger works in Digilent test and measurement device. In addition, you can learn how to use external trigger in oscilloscope and logic analyzer of Digilent test and measurement devices.
Trigger the measurement in oscilloscope with a push button
This is an example of using an analog signal to trigger the oscilloscope. When you press the push button, it will generate a trigger. The trigger point should change each time the button is pressed since no condition is set to be displayed at t=0.0 seconds
Record Digital Signals in Logic Analyzer with Automated Trigger
This is an example of using a digital signal to automatically trigger the logic analyzer. Digital input/output pins (DIO0 and DIO1) will be used to stimulate the external trigger and to provide some data to be read. A clock signal from DIO0 is used as the trigger. A random logic signal at a rate of 10kHz is generated on DIO1 which is being observed in the Logic instrument on the respective DIO1 signal line. DIO1 should update every two seconds in the Logic Analyzer with every rising edge of the clock signal from DIO0
