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Engineering Unit Setup
The Engineering Unit Setup is used to determine the sensor type, sensitivity and
method of detection for each channel selected.
Sensor Type
: Choose Acceleration, Velocity,
Displacement, Force, Sound or Off. If Off is
selected, then Volts will be the defined sensor
unit.
Sensor Unit (SU):
Choose the unit that is
associated with each sensor type. Sensor
Units will only show what is available for the
sensor type shown below in the table.
Sensitivity mV/SU:
This is a user
selectable input value. Enter the
sensitivity of the device you are
connecting to in the input box. Use the [
Navigation Keypad
] and enter the value
via the keypad and press [
OK
] when complete.
Display Unit (DU):
If you select Acceleration, and want to display velocity for
example, you can select this here. Choose from Gs, Gal, m/s2, mm/s, in/s, cm/s,
mil, um.
dB Ref (DU):
Note- This only changes the dB scale on the display.
Input a
number (DU) to define the reference value of the dB scale. dB value = 20 log
(A/A0)
where A is the linear value, and A0 is the dB reference value.
When A =
A0, dB value is equal to 0dB, so the dB reference
value also defines the position
of 0 dB.
For an acoustic signal, the dB reference is set at 2e-05 PA.
Int./Diff
: To show the mathematical relationship between the SU (Sensor Unit)
and the DU (Display Unit), this could be integration once, twice or differentiation
Acceleration
Gs, Gal, m/s2
Velocity:
mm/s, in/s, cm/s
Displacement
mil, um
Force
Lb, Nt
Sound
Pa
Off
Volts
Summary of Contents for Fieldpaq
Page 5: ...Page 4 ...
Page 54: ...Page 53 Orbit x y ...
Page 61: ...Page 60 ...
Page 104: ...Page 103 Power Spectrum Time Waveform Bearing Spectrum ...
Page 199: ...Page 198 ...
Page 200: ...Page 199 DVF specifications Maximum frequency band Maximum resolution Maximum file size ...
Page 204: ...Page 203 Done ...
Page 206: ...Page 205 5 Start the Data Explorer Program 6 Select File Import ...
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Page 222: ...6 ...