Display of the saved reference waveforms can be set
on or off in the REF menu. The waveforms are saved
in the non volatile memory of the oscilloscope or an
external USB device and are identified with the
following names : RefA, RefB. To display (Load) or
hide (off) the reference waveforms, take the
2. Press [ ] for Load and select the signal
source by turning the control
knob You can choose from 1 to 10 After
selecting a numeral for saved waveform e g
1 press the control knob to
confirm and the waveform originally stored in that
position can be recalled. For instructio
storing or recalling reference waveforms on the
USB device, read Storage and Recall
3. Press [F1] for RefB to select the second
signal source for the math function by repeating
4. To close the reference waveform, press [ ].
In actual application, when using your UTD4000
to measure and observe such
waveforms, you can compare the current
waveform with the reference waveform for
analysis. Press to display the
reference waveform menu For setup please
: When [ ] is pressed after a waveform
is recalled or imported, that waveform will
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