Agilent Technologies 34972A User Manual page 285

Example: Calculating Measurement Error
Calculate the approximate measurement error for a pulse train input
with a crest factor of 3 and a fundamental frequency of 20 kHz. The
internal DMM is set to the 1 V range. For this example, use the 90-day
accuracy specifications of ± (0.05% of reading + 0.04% of range), as shown
in chapter 8.
Error = ±(0.05% + 0.04%) = ±0.09%
sine
Error = 0.15%
crest factor
------------------------------------------------------------ -
Error =
bandwidth
4  3.14159
Total Error = 0.09% + 0.15% + 1.4% = 1.6%
Measurement Fundamentals
2
– 3  20000
* 100 = 1.4%
 1000000
Chapter 7 Tutorial
4
7
285