A&D RA3100 Omniace, Instruction Manual

Page: 40 / 176

4.Configuring Measurement - 4.2.Setup the Input Channel
40 1WMPD4004444
Description of Step 3 (setting the filter) (procedure on page 39)
Set the filter of the selected channel.
This cuts out unnecessary frequency components and noise. As the filter differs according to the input
module type, set the filter according to the characteristics of the input signal and measurement.
Low-pass filter (L.P.F.)
A gently sloping attenuation filter. Set the cutoff frequency in consideration of the frequency of the input signal.
Anti-aliasing filter (A.A.F.)
A steeply sloping attenuation low-pass filter. Enable this filter to automatically set the filter so that
aliasing of the A/D data does not occur due to the sampling speed.
Description of step 4 (setting the display range and display position
(waveform display area)) (procedure on page 39)
When displaying multiple channels, it may be difficult to recognize them because the waveforms
overlap. Reducing the input sensitivity in the measurement range decreases the amplitude and changes
the display position, which can stop the waveforms from overlapping and make them easier to
recognize, but this also reduces the resolution of the data. The display range and display position
settings can be used to change the display scale and display position of the waveform amplitude
direction without reducing the resolution of the data of the channel being displayed.
Disp. range:
The display width in the amplitude direction of the waveform display area on the waveform monitor
Specified as the percentage of the display width when the full range of the monitor in the vertical
direction is 100%.
Example) When 40% is set, the waveform display is reduced to 8 div of the total width of 20 div.
Disp. pos.:
Specify the position of the waveform monitor to display the specified range of the waveform display
area. Specified as a percentage indicating the center position of the display range from the bottom of
the monitor when the full range of the monitor in the vertical direction is 100%.
When the Disp. range key or Disp. pos. key is tapped, the rotary knob is enabled and the setting
value can be changed by turning the knob. The key can also be pressed and held to display numeric
keys for directly entering values.
Relationship between the display range and display position of the input channel
100% Waveform monitor
(Waveform display area)
(Center position of
display range)
Display range N% of total
Total of 100%
X% from bottom of display position
0%