Math Scale And Offset - Agilent Technologies MSO6012A User Manual

5 Making Measurements

Math scale and offset

206
Any math function may be manually scaled by pressing the Scale
or Offset softkeys and then adjusting the value.
Math Scale and Offset are Set Automatically
Any time the currently displayed math function definition is changed, the function
is automatically scaled for optimum vertical scale and offset. If you manually set
scale and offset for a function, select a new function, then select the original
function, the original function will be automatically rescaled.
1 In the Waveform Math Menu for the selected math function,
press the Scale or Offset sofkeys to set your own scale factors
(units/division) or offset (units) for the selected math
function.
Units for each input channel can be set to Volts or Amps
using the channel Probe Units softkey. Scale and offset units
are:
Math function
FFT
1*2
1-2
d/dt
∫
dt
√ (square root)
* 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
Ω
1 M . FFT units will be displayed in dBm when channel units is set to Volts
and channel impedance is set to 50
all other FFT sources or when a source channel's units has been set to
Amps.
A scale unit of U (undefined) will be displayed for math
functions 1-2, d/dt, and √ (square root), and for ∫ dt when 1-2
or 1+2 is the selected source if channel 1 and channel 2 are
set to dissimilar units in the channel Probe Units softkey.
2 Press the Scale or Offset softkey, then turn the Entry knob
to rescale or change the offset value for your math
function.
Units
*
dB (decibels)
2 2
V , A , or W (Volt-Amp)
V or A
V/s or A/s (V/second or A/second)
Vs or As (V-seconds or A-seconds)
1/2 1/2 1/2
V , A , or W
Ω
. FFT units will be displayed as dB for
6000 Series Oscilloscope User's Guide
(Volt-Amp)