14
/
14
d. Check whether the signal in the signal source has a DC offset.
e. Remove the incoming signal and check whether the baseline is in screen range (if not, self-
calibration is required).
f. If you still cannot use this product normally, please contact UNI-T.
(3) The measured voltage amplitude value is 10 times larger or smaller than the actual value: Check
that the channel probe attenuation coefficient settings are consistent with the used probe attenuation
rate.
(4) There is a waveform displays but not stable:
a. Check the trigger source in the trigger menu and confirm that it matches the input channel of
the actual signal.
b. Check the trigger type: general signals should use
“Edge” trigger. Only when the proper trigger
type is used, the waveform can displayed stably.
c.
Change the trigger coupling to high-frequency or low-frequency to filter out the high-frequency
or low-frequency noise that interferes with the trigger.
(5) No display after pressing RUN/STOP:
a. Check whether the mode at the trigger panel (TRIGGER) is on
“Normal” or “Single” and whether
the trigger level exceeds the waveform range.
b. If it exceeds
，
set the trigger level to the middle or set the mode to AUTO.
c.
Press AUTO button could automatically finish the above setting.
(6) Waveform refresh is very slow:
a. Check whether the acquisition method is average and the average times are large.
b. Check whether the storage depth is the maximum.
c.
Check whether the trigger release time is large.
d. Check whether the trigger is normal and the current time base is slow.
e. All the preceding causes slow refreshing of waveforms. Users can restore the factory settings
so that the waveforms can be refreshed normally.
10. Appendix Contact Us
If the use of this product has caused any inconvenience, please contact your local UNI-T dealer or sales
center.
You can send emails to
to contact us. Our office hours are from 8 a.m. to 5:30
p.m. (Chinese standard time), Monday to Friday.
For product support outside mainland China, please contact your local UNI-T distributor or sales center.
Service support: Many UNI-T products have the option of extending the warranty and calibration period,
please contact your local UNI-T dealer or sales center.
To obtain the address list of our service centers, please visit our website at URL:
