34410A/11A/L4411A User’s Guide 113
Measurement Tutorial 4
The following table shows the typical error for various pulse waveforms as a function of
input pulse frequency:
This table gives an additional error for each waveform, to be added to the value from the
accuracy table provided in Chapter 5, “Specfications.”
The 34410A/11A/L4411A specifications are valid for CF ≤ 10, provided there is
insignificant signal energy above the 300 kHz bandwidth for voltage, or the 10 kHz
bandwidth for current. Multimeter performance is not specified for CF > 10, or when
significant out-of-band signal content is present.
Example:
A pulse train with level 1 V
rms
, is measured on the 1 V range. It has pulse heights of 3 V
(that is, a Crest Factor of 3) and duration 111 μs. The prf can be calculated to be 1000
Hz, as follows:
Thus, from the table above, this ac waveform can be measured with 0.18 percent
additional error.
Typical error for square wave, triangular wave, and pulse trains of CF=3, 5, or 10
prf square wave triangle wave CF=3 CF=5 CF=10
200 –0.02% 0.00% –0.04% –0.09% –0.34%
1000 –0.07% 0.00% –0.18% –0.44% –1.71%
2000 –0.14% 0.00% –0.34% –0.88% –3.52%
5000 –0.34% 0.00% –0.84% –2.29% –8.34%
10000 –0.68% 0.00% –1.75% –4.94% –26.00%
20000 –1.28% 0.00% –3.07% –8.20% –45.70%
50000 –3.41% –0.04% –6.75% –32.0% –65.30%
100000 –5.10% –0.12% –21.8% –50.6% –75.40%
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