206 6000 Series Oscilloscope User’s Guide
5 Making Measurements
Math scale and offset
Any math function may be manually scaled by pressing the Scale
or Offset softkeys and then adjusting the value.
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:
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.
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.
Math function Units
FFT dB
*
(decibels)
1*2 V
2
, A
2
, or W (Volt-Amp)
1-2 V or A
d/dt V/s or A/s (V/second or A/second)
∫ dt Vs or As (V-seconds or A-seconds)
√ (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
1M
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.
To Next Page
Loading...
Need help?
General
