Chapter 3: Testing Performance
To test delta time measurement accuracy
61
To test delta time measurement accuracy
Description
DTMA (delta time measurement accuracy) refers to the accuracy of time delay
measurements made between two edges of a sine wave acquired on a single scope
channel. DTMA depends heavily on whether the waveform is averaged, and is expressed
as both an absolute error (peak) and a standard deviation of multiple measurements
(rms).
Specifications
The DTMA specification is shown below. The periods measured by the oscilloscope
must fall within the expected value of the period ± the value shown in the table. Limits
are shown in the Performance Test Record beginning on page 64.
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