A&D RA3100 Omniace, Instruction Manual

Page: 41 / 176

4.Configuring Measurement - 4.2.Setup the Input Channel
1WMPD4004444 41
Description of step 5 (setting the display maximum and display minimum
(waveform display scale)) (procedure on page 39)
If the amplitude of the input signal is smaller than the set range, the signal change may be hard to
recognize.
In this case, you can change the scale of the upper limit value and lower limit value for the display range
to enlarge the amplitude of the displayed signal.
Disp. max: Set the display upper limit value of the top of the display range.
Disp. min: Set the display lower limit value of the bottom of the display range.
When the Disp. max or Disp. min 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 maximum and display minimum of the input channel
Waveform monitor
Display maximum
Display range
Display minimum
Display position
NOTE
If the sensitivity of the measurement range is increased to enlarge the amplitude, the amplitude of the
input signal will only become a little bigger and the range may be exceeded or the input maximum value
may not be able to be read, etc.
If the display is enlarged by changing the scale, the recorded data is recorded until the value set in the
measurement range, and the display can only be enlarged.
Description of Step 6 (zero adjust) (procedure on page 39)
After turning on the power, the internal temperature of the product will rise as time elapses, and cause
temperature drift inside the input module, which leads to errors in the measurement data.
Execute zero adjust to cancel these errors.
In order to perform measurement with few errors, let the product warm up for 60 minutes after turning
on the power, then tap the Zero adjust key in the channel setup sub menu to cancel the input drift.
This function may not be available, depending on the type of input module.
NOTE
This function is for canceling internal offset and drift, and does not cancel the offset of the input signal.