76 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
4 Math Waveforms
Units for Math Waveforms
Units for each input channel can be set to Volts or Amps using the Units
softkey in the channel's Probe Menu. Units for math function waveforms
are:
A scale unit of U (undefined) will be displayed for math functions when
two source channels are used and they are set to dissimilar units and the
combination of units cannot be resolved.
Math Operators
Math operators perform arithmetic operations (like add, subtract, or
multiply) on analog input channels.
• "Add or Subtract" on page 77
• "Multiply or Divide" on page 77
Math function Units
add or subtract V or A
multiply
V
2
, A
2
, or W (Volt-Amp)
d/dt V/s or A/s (V/second or A/second)
dt
Vs or As (V-seconds or A-seconds)
FFT dB* (decibels). See also "FFT Units" on
page 88.
√(square root)
V
1/2
, A
1/2
, or W
1/2
(Volt-Amp)
* When the FFT source is channel 1, 2, 3 or 4, FFT units will be displayed in dBV when channel
units is set to Volts and channel impedance is set to 1 M
Ω. FFT units will be displayed in dBm
when channel units is set to Volts and channel impedance is set to 50
Ω. FFT units will be
displayed as dB for all other FFT sources or when a source channel's units has been set to Amps.
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