Chapter 3: Testing Performance
Time Base Accuracy Test
3–25
3
Set up the scope to measure frequency as follows:
a Click the Frequency measurement icon on the left side of the screen, or
b Pull down the Measure menu, select Time and then select Frequency.
c If the time base is calibrated, the displayed waveform will be un-aliased at this time base
setting and will appear like the one on the screen image shown below.
The question marks in the frequency measurement area at the bottom of the screen
indicate that the frequency is not measurable at this time scale.
d If the time base is NOT calibrated, an aliased waveform with a frequency in the range of
about 30 Hz to 140 Hz will be displayed.
Frequency
measurement
icon
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