Fluke 190 Series II User Manual page 33

4 Exit the menu
F4
See also Table 2 in Chapter 8.
Selecting AC-Coupling
After a reset, the test tool is dc-coupled so that ac and dc
voltages appear on the screen.
Use ac-coupling when you wish to observe a small ac
signal that rides on a dc signal. To select ac-coupling, do
the following:
1 Display the
A
2 Highlight
F2
Observe that the bottom left of the screen displays the
ac-coupling icon: .
You can define how Auto Set affects this setting, see
Chapter 6 'Changing the Auto Set Options'.
key labels.
INPUT A
.
AC
Using the Scope and Meter
Reversing the Polarity of the Displayed
Waveform
To invert, for example the input A waveform, do the
following:
1 Display the
A
2 Open the
F4
3 Select Inverted and accept
inverted waveform display.
ENTER
4 Exit the menu.
F4
For example, a negative-going waveform is displayed as
positive-going waveform which may provide a more
meaningful view. An inverted display is identified by an
inversed trace identifier (
and in the status line below the waveform.
Acquiring Waveforms
key labels.
INPUT A
menu.
INPUT A
) at the right of the waveform,
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