Options Tab Right Panel

The right hand side panel of the Options tab allows you to turn the 6 main plot types on and off, and to change the settings for each group.

Spectra and Time Waveform Plots

The figure below shows the first few rows of the right hand panel of the options tab. The first row of check boxes allows you to turn on or off the 6 main plot types, which are:

• Time waveform of raw data (eg acceleration or noise)
• FFT of raw data
• Time waveform of integrated data (eg velocity data from acceleration)
• FFT of integrated data
• Time waveform of twice integrated data (eg displacement data from acceleration)
• FFT of twice integrated data

Frequency Resolution and Window Length

The next three rows show the frequency (bin) resolution for ffts, the time waveform duration used in analysis mode, and a button to link these. If they are linked, the frequency resolution will be the inverse of the time waveform duration, and the data shown in the time waveform plot will be the data that is used to calculate the FFT (see FFT Setup for a detailed explanation). In analysis mode, all of the time waveform data is shown, however you can still show the time window for the current FFT by disabling the peak hold and average spectra and turning on Plot Zoomed Time.

Option Grouping

The six columns below this contain (in a rough sense) the options for each of these six plot types. By default, if you turn one of these plot types on, it will be enabled for all acceleration channels (with units of g), or all channels in the case of raw data. You can turn off individual channels on the setup tab. Any options that are not currently available (for example because you are in analysis or acquisition mode) will be greyed out and inactive.

The figure below shows 3 copies of the entire right panel, showing how the options are grouped:

• Red: Raw data.
• Green: integrated data
• Blue: twice integrated data
• Yellow: time waveform plot options
• Purple: FFT plot options.

Detailed information on each option is provided below.

Common Options

On/Off: Turns the six plot types on or off for all channels.

Freq. Resolution (Hz): Bin resolution. The frequency offset between neighbouring data points on the FFT.

Window = 1/Resolution: Link the frequency resolution to the time waveform plot duration in acquisition mode, or to the zoomed time plot duration in analysis mode (if peak hold and average is turned off).

Time Plot Window (s): Time waveform plot duration in acquisition mode.

Y Min/Y Max: Y scale for each plot type. This can be over-ridden (increased) by auto scale.

Auto Scale: Automatically increase Y axis scaling.

Shared Scale: All plots of same type have same Y axis scale.

Smooth Adjust: Auto scale in very small steps

Ratchet: Do not reduce scale automatically, only increase it.

Reset Ratchets: Return to nominal Y scale specified above.

Get Current Scaling: Update the specified scale with the current scale.

Shared Zoom: To be included in next release. This is for zooming with the mouse.

Display RMS: Display text in the top left corner of each plot showing the overall RMS level.

Box Around Plots: Draw a box around the plots.

Show Y Units: Shows Ch 1 (mm/s RMS) instead of just Ch 1. Only the spectra include RMS (or 0-P/P-P).

Time Waveform Options

Floating Y:

Display/Link Cursors:

Index:

Plot Zoomed Time:

Filter Type:

Filter Order/Cutoff (Hz):

Filter Transient (s):

FFT Options

DC Cutoff:

X Min/Max:

Linear X/Y:

RMS / 0-P / P-P:

Show on Y Label:

Current:

Peak Hold/Average:

Reset Peak Hold/Avg:

RMS/Exp Average:

Overlap (%):

Number of FFTs/Half N:

RMS From Band:

Frequency Band:

Time Domain Integration:

Next

User Interface

Setup Tab

Options Tab Left Panel

Plot Tabs