With the instrument already triggering properly on the signal press “Measure” and then press “Counter” on the right hand side of the display. This will bring you to the frequency counter and totalizer menu and will allow you to change the channel that the tool is monitoring and the measurement that you wish to use at that time.
In the image below, I set the digital voltmeter to monitor channel 1 of my square wave.
Additionally, with the instrument already triggering properly on the signal press “Measure” and then press “Totalizer” on the right hand side of the display. This will bring you to the totalizer menu and will allow you to change the channel that the tool is monitoring and the measurement that you wish to use at that time.
In the image below, I set the totalizer to monitor channel 1 of my square wave.