SBench 6 supports a huge variety of different calculation functions. A calculation function can either generate one or multiple single result values that are shown in the info dialog window or it can generate a new signal that can then be shown in either the analog display window or in a dedicated display windows like the FFT display for FFT signals or the Histogram display for histogram signals. Resulting functions can again be used for further calculations like the max function showing the carrier frequency of a FFT signal.
All calculations can either be invoked from the channel dialog by right clicking on a channel or a group of channels or using the New tab from the menu.
Simple Measurements | Base License | The simple calculation functions are already available in base license and can be used for any type of signal |
Cycle Based Measurements | Professional License | The cycle based functions do a more precise signal analysis to detect the signal cycles and calculate a lot of different figures out of cycle based signals |
Enhanced Measurements | Professional License | The enhanced functions do a specific calculation to get single values out of one or more signals |
Signal Calculations | Professional License | Mathematical functions generate new signals out of one or more given signals. |
Signal Conversion | Professional License | This group contains functions to convert data from one type to another. |
Signal Averaging | Professional License | This group contains functions that calculate different types of averaged signals. |
Dynamic Parameters | Professional License | The special group of dynamic parameters calculation are based on FFT signals only |
Signal Info | Contains a group of signal figures as described below: Maximum, Minimum, Average, Peak-Peak and Effective |
Absolute Maximum | The maximum value over all averagings runs in the selected area. If number of averages is one it is identical to Maximum. |
Absolute Minimum | The minimum value over all averagings runs in the selected area. If number of averages is one it is identical to Minimum. |
Maximum | The maximum value of the signal in the selected area. Shows value and sample position where it was found |
Minimum | The minimum value of the signal. |
Average | The average value of the signal |
Peak-Peak | The peak to peak difference (maximum - minimum) |
Effective | The effective value (RMS) |
Slope | The slope of the signal |
Cycle Signal Info | A selection of the below listed cycle based figures that are grouped for easier access. The Cycle Signal Info contains: Cycles, Period, Frequency, Duty Cycle, Pos and Neg Width, Average, Minimum, Maximum, Rise and Fall time |
Num Cycles | The number of complete cycles that have been found in the signal |
Frequency | The signal frequency and frequency variation on the signal given in Hz (Hertz) |
Period | The cylce period time given in s (seconds) |
Duty Cycle | The duty cycle = ratio between high pulse and low pulse. |
Pos Width | The positive signal width in s (seconds) above zero cross level. |
Neg Width | The negative signal width in s (seconds) below zero cross level. |
Cycle Min | The signal minimum value within one cycle |
Cycle Max | The signal maximum value within one cycle |
Cycle Average | The signal average within one cycle |
Cycle Peak-Peak | The peak to peak value (maximum - minimum) of one cycle |
Cycle Effective | The resulting effective value of one cycle |
Cycle Rise Time | The rise time from defined low cross level to high cross level |
Cycle Fall Time | The fall time from defined high cross level to low cross level |
RMS Noise | Calculates the RMS (root mean square) value of the selected source signal. The result is the deviation from the zero level. When using the calculation function on an open A/D input one gets the zero noise level of the input. |
Analog Calculation | This function can combine two analog signals using standard calculation functions like add, substract, multiply or divide. Signals can be handled like standard analog input signals and can be shown in the analog display. The setup is done in an extra setup dialog. |
Digital Calculation | This function can combine two digital signals using standard calculation functions like AND, OR and XOR. Signals can be handled like standard digital input signals and can be shown in the digital display. The setup is done in an extra setup dialog. |
FFT | This function makes a Fast Fourier Transformation (FFT) of an analog signal. The setup is done using a special FFT setup dialog. Resulting signals are shown in an extra FFT display window. The resulting FFT signal can be used for further calculations like dynamic parameters measurement. |
FIR Filter | This function filters an analog signal using a Finite Impulse Response filter. The setup is done using a special FIR setup dialog. |
Histogram | This function calculates a histogram of the analog input signal. For each value that the source signal can theoretically reach it is counted how often this value appears in the source signal. The resulting signal spans over the available resolution of the source signal. The histogram function has an extra setup dialog. Histogram signals are shown in a dedicated histogram display. |
Copy | This function creates a copy of the selected signal to be used as a reference. The generated signal will not change at further acquisitions. Since no additional setup is required there is no setup dialog. |
Function Generator | This function calculates a signal from a user-defined function. The setup is done using a special setup dialog. |
Concatenate analog signals | This function concatenates the selected analog channels. The setup is done using a special setup dialog. |
Concatenate digital signals | This function concatenates the selected digital channels. The setup is done using a special setup dialog. |
Convert to digital | This function converts an analog signal to a digital bus where each digital channel represents one bit in the original analog channel. The convert function has an extra setup dialog. |
Convert to analog | This function converts one or more digital signals to an analog channel where each bit represents one digital channel. The convert function has an extra setup dialog. |
Average Signal | This function averages the results of a specified number of acquisitions. The average signal function has an extra setup dialog. |
Average Multi | This function averages the segments of a MULTI acquisition. The average multi function has an extra setup dialog. |
Moving Average | This function uses the samples left and right of each sample to calculate a smoothed version of the input signal. The moving average function has an extra setup dialog. |
All dynamic Parameters | Calculates all of the below listed dynamic parameters |
Harmonics | Shows the level of the harmonics found. Depending on the setup the number of harmonics that are calculated may differ |
SNR | Signal to Noise ratio |
THD | Total Harmonic Distortion |
SFDR (incl.) | Spurious Free Dynamic Range including Harmonic Distortion |
SFDR (excl.) | Spurious Free Dynamic Range excluding Harmonic Distortion |
SINAD | (THD + N) Signal to Noise ratio and Distortion |
ENOB (SNR) | Effective Number of Bits based on SNR value |
ENOB (SINAD) | Effective Number of Bits based on SINAD value |
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SBench 6 Documentation
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