Tektronix TDS5054, User Manual

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Creating and Using Math Waveforms
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TDS5000 Series User Manual
Basic dual waveform math is performed from the Math Setup control window by
simply selecting the first waveform, the operand, and the second waveform.
Click Apply to display the math waveform in the graticule.
The syntax that follows describes valid math expressions for advanced math
using the Equation Editor:
<MathWaveform> := <Expression>
<Expression> := <UnaryExpression> | <BinaryExpression>
<UnaryExpression> := <UnaryOperator> ( <Term> )
| <UnaryOperator> ( <Expression> )
<BinaryExpression> := <Term> <BinaryOperator> <Term> | <Scalar>
<BinaryOperator> <Term> | <Term> <BinaryOperator> <Scalar>
<Term> := <Waveform> | ( <Expression> )
<Scalar> := <Integer> | <Float> | <Meas--Result>
<Waveform> := <ChannelWaveform> | <ReferenceWaveform> | <MathWaveform>
<ChannelWaveform> := Ch1 | Ch2 | Ch3 | Ch4
<ReferenceWaveform> := Ref1 | Ref2 | Ref3 | Ref4
<MathWaveform> := Math1 | Math2 | Math3 | Math4
<UnaryOperator> := Invert | Derivative | Integral | Average | Max | Min
| Filter | Vmag | Exp | log 10 | log e | sqrt | Spectral Magnitude
| Spectral Phase | Spectral Real | Spectral Imag
<BinaryOperator> := + | -- | / | *
<Meas--Result> := meas1 | meas2 | meas3 | meas4 | meas5 | meas6 | meas7 | meas8
Waveform Differentiation.
The advanced math capabilities of the oscilloscope
include waveform differentiation . This allows you to display a derivative math
waveform that indicates the instantaneous rate of change of the waveform
acquired.
Derivative waveforms are used in the measurement of slew rate of amplifiers and
in educational applications. You can create a derivative math waveform and then
use it as a source for another derivative waveform. The result is the second
derivative of the waveform that was first differentiated.