MTS Series 793 - Manual (Page 403)

Frequency Mode Tab
Description Item
Specifies how frequently the scope acquires data. Sampling Rate
This value is set to the system rate and cannot be changed.
Specifies the number of points acquired per update. The frequency
resolution is equal to Sampling Rate/Buffer Size. Buffer Size
Determines the calculation and display methods applied to data. Calculations
Sets the averaging method applied after the calculation of ASD (Auto
Spectral Density) values: Averaging
None—No averaging is applied to the ASD values.
Peak Hold—Selects the largest value between the current and new
buffer of data for each of the ASD values.
Linear—Takes previous data into account.
Averages—The number of averages use by Exponential.
Unwrap Phase—Unwraps FRF Phase.
Exponential—Takes previous data into account. The factor used in
calculating exponential averaging is specified by the Averages value.
Specifies the way data displays. The selections are None or Hanning. Windowing
The Hanning selection can reduce aliasing associated with
calculations.
Defines the display of data on the vertical axis. Y-Axis
Select this if your waveform has an offset or some other bias. Show DC Value
Specifies vertical scaling: Scaling
Logarithmic—Plots the log of ASD, Amplitude, FRF, and Coherence
values.
Linear—Plots ASD, Amplitude, FRF, and Coherence values on a linear
scale.
Sets the vertical divisions when Scaling is set to Logarithmic. The
range is 1 to 20. Decades
How to Set Up a Time Plot
1. In the Station Manager window’s toolbar, click the scope icon to display a scope window.
2. In the scope window:
a) For Channel, select the channels whose signals you wish to monitor. For Signal, select the signals you
wish to monitor.
MTS Series 793 Control Software 403
Scopes and Meters