Waveform analysis
R&S
®
RTA4000
108
User Manual 1335.7898.02 ─ 08
Addition
S Source2
Adds the values of 2 sources (channel or math waveform, or con-
stant).
Subtraction
Source1 - Source2
Subtracts the second source from the first source.
Multiplication
Source1 * Source2
Multiplies the two sources.
Division
Source1 / Source2
Divides the first source by the second source.
For small amplitudes of the second source, the result increases
quickly. If the second source crosses zero, the result would be a
range of +
∞
to -
∞
. In this case, instead of 0
V, the calculation func-
tion uses the value that the Least Significant Bit (LSB) of the sec-
ond source represents. (For an 8-bit value, for example, 1/256).
Square
Source1 * Source1
Squares the source. If the source contains negative values that
have been clipped, then the result contains positive clipping.
Square Root
Square Root (Source)
Calculates the square root of the source. Note that the square root
of a negative number is undefined and the result is clipped.
Abs. Value
|Source|
Calculates the absolute value of the source. All negative values
are inverted to positive values. The positive values remain unmodi-
fied. If the source has negative values that have been clipped, the
result contains positive clipping.
Reciprocal
1V / Source
Divides 1V by the source values.
For small source amplitudes the result increases quickly. If the
source crosses zero, the result would be a range of +
∞
to -
∞
. In this
case, instead of 0
V, the calculation function uses the value that
the Least Significant Bit (LSB) of the operand represents. (For an
8-bit value, for example, 1/256).
Inverse
Inverts all voltage values of the source, i.e. all values are mirrored
at the ground level. Thus, a positive voltage offset becomes nega-
tive. If the amplitude of the source is clipped, the result is the inver-
ted limitation.
Mathematics
