This is the QC test I been doing at work
To measure Digital Pulses using an digital oscilloscope
To Measure Pulse Width:
1.) You take the cursors and line up the leading edge and falling edge of the pulse to measure the pulse width
2.) The Problem with the boards are that the Starting pulse, its pulse width is not the same pulse width as the other channels on the oscilloscope, cause I'm measuring the same boards just on different channels, But what's weird is that the starting pulse/trigger has a different pulse width compared to the other PCB's
3.) Not sure what causes this problem?
To Measure Time Interval
1.) You take the cursors and line up the falling edge of pulse#1 and line up the other cursor with the leading edge of pulse#2
2.) The Problem with the boards at work is that each pulse is suppost to have a constant 15us time interval between the next pulse, but what I am getting is 13us, 16us, 18us, 12us etc so each pulse interval is different in the pulse train
To Measure Pulse Lag? or offset time?
1.) Pulse train#2 is lagging Pulse Train#1
2.) I measure the Lag time or offset time or time interval between Pulse Train#2 and pulse train#1
3.) The boards at my work have 4 pulse waveforms, they are suppost to start all at the same time in sync, but they don't. Either One or Two waveforms have a Lag time so I have to measure that.
What other Tests Can I do please?