Velleman ADVANCED PERSONAL SCOPE APS230 Manuel D'utilisation page 68

Troubleshooting
68
A ps 2 3 0 A D VA N CE D Per s o n al S c o pe
• The programmed trigger level is not
ched (choose "run" mode)
• Y position is wrong or need calibration.
• The input signal is too high, change the volt/
div. setting or choose auto-setup.
Incorrect frequency readout:
• An incorrect time/div. setting has been cho-
sen. (start at 50ns/div)
Voltage readout does not correspond with
the actual value :
• The measuring probe is in the X10 position
• The batteries are discharged.
• The zero refrence is not set correctly for DC
measurements.
TM
rea-