IBP HDM99, Руководство пользователя

Страница: 39 / 68

Measurement 39
Voltage Display
In the beam display the R.M.S. value of the voltage is shown. The voltage
measurement in the oscilloscope mode serves mainly for the measurement
of voltages subject to higher frequency, therefore also AC voltages.
Measuring range
By activating the function key
y-range it is possible to select a measuring
range for the vertical axis of the graph via the arrow-keys which allows a
maximum resolution of the voltage graph. The chosen measuring range is
shown inverted. With the
ok -key you transfer it to the voltage
measurement.
Trigger
With this function key you will get to a menu where you can adjust the
mode of the measurement triggering. Press the keys beside the arrows until
the desired triggering is presented inverted. In detail the options mean:
No trig.
The applied voltage is shown without triggering.
+ AC The rising edge of the average value of the applied
voltage is triggered.
- AC The falling edge of the average value of the applied
voltage is triggered.
+DC The rising edge at the zero passage of the voltage
is triggered.
-DC The falling edge at the zero passage of the voltage
is triggered.
Take over the chosen triggering with the ok -key, and return to the voltage
measurement. Please note that a successful triggering can only take place if
a suitable voltage signal is applied. Otherwise >no trigger< appears in the
graphic display.