Fluke Biomedical 190M - Manual (Page 36)

190M Series Medical ScopeMeter
Users Manual
26
Reversing the Polarity of the Displayed
Waveform
To invert, for example the input A waveform, do the
following:
1 A Display the INPUT A key labels.
2 F4 Open the INPUT A menu.
3
ENTER
Select Inverted and accept
inverted waveform display.
4 F4 Exit the menu.
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 (
) at the right of the waveform,
and in the status line below the waveform.
Variable Input Sensitivity
The variable input sensitivity allows you to adjust any input
sensitivity continuously, for example to set the amplitude
of a reference signal to exactly 6 divisions.
The input sensitivity of a range can be increased up to 2.5
times, for example between 10 mV/div and 4 mV/div in the
10 mV/div range.
To use the variable input sensitivity on for example
input A, do the following:
1 Apply the input signal
2
MANUAL
AUTO
Perform an Auto Set (AUTO must
appear at the top of the screen)
An Auto Set will turn off the variable input sensitivity. You
can now select the required input range. Keep in mind that
the sensitivity will increase when you start adjusting the
variable sensitivity (the displayed trace amplitude will
increase).
3 A Display the INPUT A key labels.