I am a student and I am facing a problem with an oscilloscope configuration.
I have two digital outputs coming from two different switches. I want to find the time delay between the operation of these switches. When one switch operates, time starts and then time stops when the 2nd switch operates. For this I am using two channels of a Tektronix oscilloscope.
After studying on net, I came to know that this can be performed by pre-triggering of oscilloscope saying "The oscilloscope is acquiring pretrigger data. All triggers are ignored in this state" what this mean? I don't know how to set the pretrigger for two channels. The time between these two switches is hardly 200 usec.
Can anyone please explain to me, how to do this with an oscilloscope, or any other method, or explain to me the setting of the quoted sentence?