Agilent Technologies 34410A User Manual page 137

Understanding the " % of range " Error
inaccuracies that result from the function and range you select. The range
error contributes a constant error, expressed as a percent of range,
independent of the input signal level. The following table shows the range
error applied to the multimeter's 24
Total Measurement Error
reading error and range error. You can then convert the total
measurement error to a "percent of input" error or a "ppm
(parts
Error Example
the 10 V range. Compute the total measurement error using the 90
accuracy specifications: ± (0.0020% of reading + 0.0005% of range).
34410A/11A User's Guide
Range
10 VDC
10 VDC
10 VDC
per million) of input" error as shown below.
– –
Assume that a 5 VDC signal is input to the multimeter on
Reading Error = 0.0020% x 5 VDC = 100 mV
Reading Error = 0.0020% x 5 VDC = 100 mV
Total Error = 100 mV + 50 mV
The range error compensates for
hour dc voltage specification.
–
Input Level Range Error
(% of range)
10 VDC 0.0004
1 VDC 0.0004
0.1 VDC 0.0004
To compute the total measurement error, add the
=
\
=
\
=
Specifications
Range Error
(Voltage)
±40 mV
±40 mV
±40 mV
\
150 mV
0.003% of 5 VDC
30 ppm of 5 VDC
5
– day
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