![Velleman APS230 Manual Download Page 68](http://html1.mh-extra.com/html/velleman/aps230/aps230_manual_4036588068.webp)
68
A ps 2 3 0 A D VA N CE D Per s o n al S c o pe
TM
Troubleshooting
•
The programmed trigger level is not rea-
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.