9.3.2 Set up a sensor in ODS/Modal
You can set sensor parameters for inputs A, B, C, and D. When you use the CSI A0643TX
triaxial accelerometer, input A receives measurements from the z-axis, input B receives
measurements from the x-axis, and input C receives measurements from the y-axis. For
Modal jobs, the hammer is on your reference channel.
Procedure
1.
From the ODS/Modal main menu, press F8 Job Manager > F4 Edit This Job > F12 Input Setup
> F7 Sensor Setup.
If you collected data for the job, the F12 key on the Edit Job Setup menu becomes
the Sensor Setup option. You cannot change the number of inputs after you collect
data, but you can change the sensor type. You can also set up a sensor from the
ODS/Modal ALT2 main menu.
2. Set the following options as necessary for each input.
Option Description
Change Sensor Type Select the type of sensor to use for the input.
Change Sensitivity Enter the sensitivity in volts per engineering unit, such as g's for an
accelerometer.
Change Sensor
Power
Select ON to use the accelerometer input where the analyzer powers
the sensor. Select OFF to use the volts input, and the analyzer will not
provide power to the sensor.
Change Signal
Coupling
The coupling mode for sensor power ON is always AC coupled. When
sensor power is OFF, the mode can be changed to AC or DC.
Change Accel Config Set the accelerometer sensors as single axis (one signal), biaxial (two
signals), or triaxial (three signals).
3. Press ALT to set the parameters for input C and input D.
4.
Press Enter.
9.3.3 Set the waveform and spectrum data units in ODS/
Modal
Set the data units for the spectra and waveform for each selected input.
Procedure
1. From the ODS/Modal main menu, press F8 Job Manager.
2. Use the up and down arrow keys to select a job.
3. Press F4 Edit This Job > F12 Input Setup.
4. For each input, select the units for the waveform and spectra data. Waveforms are
always saved in sensor units.
ODS/Modal
MHM-97432 Rev 7 283
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