Troubleshooting - UNI-T UTD2025C Operating Manual

Loading: The prompt will display on the screen with
schedule bar below it when calling out waveform.

Troubleshooting

1. Please operate according to following steps for
black panel without display for digital storage
oscillograph after pressing power switch.
To check if power plugs are connected with
normal power supply or not.
To check if power switch is connected or not.
To start up the instrument again after above
inspection.
Please contact UNI-T for service if the product
still can not be used normally
2. Please operate according to following steps if
there is no signal waveform in the image after signal
acquisition.
To check if probe is connected to signal
connection wire or not normally.
To check if signal connection wire is connected
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Operating Manual for UTD2000/3000
to BNC (namely, channel connector) or not.
To check if probe is connected to articles to
measure or not normally.
To check if signals are produced or not for
articles to measure. (Channels with signal and
those with any problem can be connected to find
out reasons
To acquire signals once again.
3. Measured voltage amplitude is 10 times larger or
smaller than actual value. It has to check if channel
attenuation coefficient is consistent with
attenuation multiple of used probe or not.
4. With instable waveform display:
To inspect setup of trigger source shown in
trigger menu to check if it is consistent with input
channel of actual signal or not.
Inspection of trigger type: General signals shall
be inspected by edge trigger mode while video
trigger