Instructions

Digital Storage Oscilloscope 76
Chapter 4 Troubleshooting
4.1 Problem Settlement
1. If the oscilloscope does not start up at power on, follow these steps:
1） Check the power cord to verify it has been connected properly;
2） Check the power on/off button to ensure it has been pushed;
3） Then restart the oscilloscope.
Contact your local VOLTCRAFT distributor or directly keep touch with VOLTCRAFT
Technical Support department if the oscilloscope still can not be turned on normally.
2. If there is no display of waveforms on the screen when the oscilloscope is
turned on, follow these steps:
1） Check the probe to assure its proper connection to the input BNC;
2） Check the channel switch ( CH1~CH4 menu buttons) to make sure it has been
turned on;
3） Check the input signal to verify it has been connected to the probe correctly;
4） Affirm that all measured circuits have signals to output;
5） Turn up the magnitude for DC signals with large magnitude;
6） In addition, you may press the Auto Measure button to perform an automatic
detection of signals at first.
Contact VOLTCRAFT Technical Support department in time if there is still no display of
waveforms.
3. If the waveform of the input signal is distorted seriously, follow these steps:
1） Check the probe to assure its proper connection to the channel BNC;
2） Check the probe to assure its good connection to the measured object;
3） Check the probe to verify it has been well calibrated. Otherwise, refer to the
content about calibration described in this manual.