101
SVANTEK 977W User Manual
There are two averaging options:
Linear
and
Exponential
. In case of
Exponential
averaging an additional position appears in
this
window:
Time Constant
.
The
Time Constant
parameter can be selected
from the values:
100ms
,
125ms
,
200ms
,
500ms
,
1.0s
,
2.0s
,
5.0s
and
10.0s
.
►
The user can easily get into the
FFT
screen
from the spectrum view. It is necessary to
enter the function field (
FFT
) with the use of
▲ or ▼ push-buttons and press
<ENTER>
.
<ENT>
12.3. Saving the FFT spectra as a time history - Logger Results
The
FFT
analysis results can be saved in the logger file together with the
logger results and with the step defined by the
Logger Step
parameter (
path:
<Menu> / Measurement / Logging / Logger Setup
). The spectrum saving in
the logger file is defined by activation the
FFT
position in the
Logger Results
window by means of the
◄ or ► push-buttons.
Note: The spectra are always saved together with the summary results with integration period step.
12.4. Setting the FFT spectra view
The
Display
list is used for setting the various
parameters, which are mainly dedicated for the
control of the spectrum view.
The following positions are used for setting the
presentation of the
FFT
results:
Display Modes
enables the user to select the
Spectrum
view;
Display Scale
enables the user to change the scale of the vertical and horizontal axis of the spectrum
plot, switch on or off the grid and auto scale;
Spectrum View
enables the user to choose the spectrum (
Average
,
Instantaneous
,
Min
,
Max
) to be
viewed;
Spectrum Type
enables the user to change the viewed spectrum:
Acceleration
,
Velocity
or
Displacement
.
