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UTD4000 Four-channel User Manual
2. If no waveform is displayed after you have
acquired a signal, follow the steps below to find
the cause :
Check whether the probe is properly connected
to the signal lead.
Check whether the signal lead is properly
connected to the BNC (channel adaptor).
Check whether the probe is connected properly
to the object to be measured.
Check whether the object for measurement is
generating signals (connect the channel with
signals to the questionable channel to find the
cause).
Restart the acquisition process.
3.
The measurement voltage amplitude value is 10
times larger or smaller than the actual value :
C h e c k i f
t h e c h a n n e l a t t e n u a t i o n
f a c t o r
corresponds with the probe attenuation you have
chosen.
4.
There is waveform display but it is not stable :
Check the trigger source setup in the trigger
menu
See whether it is the same as the actual
signal input channel
Check the trigger type : Use edge trigger for
ordinary
signals
Stable waveform display is
achieved only when the correct trigger mode is
selected.
Try changing the coupling display to high
f r e q u e n c y
s u p p r e s s i o n
o r
l o w
f r e q u e n c y
suppression to filter any high or low frequency
noise that is interfering with triggering
5. No display after pressing [
] :
Check if the trigger mode is set to normal or
single
in
the
menu
and
whether
the level
exceeds the waveform range
If so
move the
level to the centre or set trigger mode to AUTO
Press [
] to complete the setup.
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①
②
③
④
⑤
①
②
③
①
②
RUN/STOP
AUTO