PRÜFTECHNIK VIBXPERT II - C. ODS Results

5-28
VIBXPERT II 05.2012
Measurement tasks
Left:
Result of an ODS meaurement for
one measurement location
Right:
Selecting a result from a file
Transfer function*
Coherence function
* Select the calculation procedure for
the transfer function in the measure-
ment setup.
(Parameter:
FRF calculation, p. 3-22)
always connect the sensor for the system response to channel A. After
the last individual measurement is completed, save the data set in a
file.
WiththeODSmeasurement,themeasurementstartswithoutatrig-
ger, which means that spectra are recorded until the number of mea-
surementsisreached(standard=4).
B. Saving
WiththeODSmeasurement,youcanassignapointnumberandadi-
rection to each impact result to document the position of the measure-
ment location and the measurement direction. Multiple impact results
can be contained in a single file.
C. ODS results
During measurement, the system response appears in the upper win-
dow and the excitation in the lower window - either as a spectrum or
timewaveform(seealsop.4-20).
After the individual measurements are completed, the final result ap-
pears. The upper window shows the transfer function while the lower
window displays the coherence function.
• PresstheMENUkeyandclickon...
... 'Choose dataset' to call up the individual results.
 ...'Chooseresult'toopentheresultselectiondialogwindow.Here
you can open the result of another measurement or start a new
measurement. This dialog window appears automatically when
saving when the corresponding option is activated in the display
setup(seep.4-20).