Subtract; Figure 2-69 Subtract - Keysight Technologies 8990B User Manual

2 Using the 8990B

Subtract

The subtract math operation subtracts source 1 and source 2 trace values, point
by point.
– If the source(s) input is in the log scale, it will be converted to the linear scale
NOTE
– If the trace length between the channels is not equal, the waveform math
– If the number of trace points is not equal, the waveform math operation will
Figure 2-69
102
to perform the subtract math operation. The resultant trace is then converted
back to dBm.
operation will find the shortest trace between the sources and shrink other
traces to an equal length.
add trace points by using the PCHIP method.
Subtract
Keysight 8990B User's Guide