SBench 6 - FFT Display | Spectrum


General Information

Short information about SBench 6. Overview about the covered application areas

Hardware Support

Cards and Features


Supported operating systems and hardware requirements


Available Versions: Base, Professional and Demo Versions


Frequently asked questions for license, installation and features


Project Organization

All settings, data files, calculations and report templates are organized in project folders


Ranges, Termination, Filters, AC/DC, Custom Units, Sensors


Singleshot, Segmented, Streaming Mode, Sample or Time based


Trigger Sources, OR/AND conjunction, Analog and Digital Trigger


Clock Modes and Sample Scaling


Timestamps and connection with GPS or IRIG-B receivers

Streaming Mode

High Speed Streaming with different file formats and split function


Analog Display

Powerful scope like view of analog signals with multiple axis and versatile functions

Segmented View

Views segmented data with timestamps, ABA data and special jump functions

Digital Data Display

Logic analyzer view for single signals and bus signals with search functions

Streaming Display

Data online view and fast hard disk streaming

X/Y Display

Lissajous style plots, one x-axis and multiple y-axis for analog signals

FFT Display

Frequency domain view with harmonics cursors and analysis functions SNR, THD, ...

Spread Display

Stacked display of multiple signals with easy scaling

History Mode

Signal history, Eye diagram



Two independant cursors for easy measurings with signal locking


Data analysis or simple measurements


Powerful FIR filters with automatic and manual coefficients

Function Generator

Formula interpreter with several operators and source signals



Different export formats supported: ASCII, Binary, MATLAB, WAVE, VCD


Comments directly inside the displays locked to display or signal


Comfortable report editor with support of all display, setup and calculation components from SBench 6


Printouts or screenshots for further documentation, different information can be added

FFT Display

SBench 6 FFT DisplayThe FFT display shows frequency based signals as generated from the FFT functions. The x-axis shows the frequency while the y-axis shows the amplitude of the different spectral components. The FFT display can show signals with logarithmic y-axis as well as linear y-axis.

The frequency plot of a signal gives you all frequency related information of the signal. Using the FFT display SBench 6 is turned into a Spectrum Analyzer like instrument. Based on the FFT plot there are several additional calculation routines available to specify the signal.

Harmonics Cursor

SBench 6 FFT Display Harmonics CursorA special cursor mode is available for the FFT display: the harmonics cursor. Inhere the cursor is multiplied by additional cursor lines each located at one of the harmonics frequencies of the current cursor position. Using this cursor one can easily see which of the frequency lines is just a harmonics line of a carrier and which one is a spurious part having another source.

The harmonics cursor shows the normal cursor line as full line with a arrow marker at the bottom of the line. The number of harmonics is shown as dotted lines in the correct x axis position related to the current position of the main cursor. The main cursor is moved by the mouse as before. The harmonics cursor will automatically locate the position of potential harmonic frequencies related to the current cursor position.

In our example we see that the main cursor is placed directly next to full scale sine signal and two spurious parts of the frequency signal can be determined as harmonics 2 and harmonics 3 of this full scale sine signal.

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