Oscilloscope Reference Ground terminal
Ground terminal
Use this terminal to connect the instrument to the same ground as the unit under test.
Guidelines for working with math waveforms
Use the following guidelines when working with math waveforms:
Keep math waveforms simple. If the m ath expression bec omes too complex, try separating the
expression into more than one math waveform and then combining the waveforms (for example,
Math1 = Math2 + Math4).
Math calculations are not available on digital channels.
You cannot use math waveforms with Fast Acquisition mode.
Math waveforms cannot be turned on without a math expression.
Math wav
eforms cannot be created from a reference waveform that was saved in Fast Acquisition
mode.
To avoi
d syntax errors in a math expression, verify the use of operators, parentheses, operands, and the
spelling of functions before activating the math waveform.
When w
orking with reference waveforms, if one or more reference waveforms are used as part of a
math waveform, the number of frames in the math waveform is the smallest of all source waveforms
(reference, math, or channel waveforms).
If one or more reference waveforms are used in a math waveform, the record length is equal to the
smallest of all the source waveforms (reference, math, o r channel waveforms). The math is calculated
using the first point from each source, followed by the next point, and so forth. This is true even if the
sources have different times between points in the record.
824 DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series
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