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DSO Series User Ma nual
Chapter 4 System Prompts and
Trouble-shooting
Definitions of System Prompts
Adjustment at Ultimate Limit : This informs you that the multifunction
control knob has reached its adjustment limit in the current status. No
further adjust is possible. When the vertical deflection factor switch,
time base switch, X shift, vertical shift and trigger level adjustments
have reached their ultimate limits, this prompt will appear.
USB Device Installed : After a USB device is plugged into the
oscilloscope, this prompt appears when the connection is valid.
USB Device Unplugged : After a USB key is unplugged from the
oscilloscope, this prompt appears.
Saving : When the oscilloscope is saving a waveform, this prompt is
shown on the screen. A progress bar appears at the bottom.
Loading : During waveform recall, this prompt is shown on the screen.
A progress bar appears at the bottom.
Troubleshooting
1. If the screen of your oscilloscope remains black without any display
after powering on, follow the steps below to find the cause :
① Check the power cable connection and check if there is normal
power supply.
②
Check if the power switch is properly pressed.
③ Restart the unit after performing the above checks.
④ If the unit still fails to work, contact Tenma to request service.
2.
If no waveform is displayed after you have acquired a signal, follow
the steps below to find the cause :
① Check whether the probe is properly connected to the signal
lead.
②
Check whether the signal lead is properly connected to the
BNC (channel adaptor).
③ Check whether the probe is connected properly to the object to
be measured.
④ Check whether the object for measurement is generating
signals (connect the channel with signals to the questionable
channel to find the cause).
⑤
Restart the acquisition process.
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