Agilent Technologies 34410A Service Manual page 34

1 Specifications
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 To compute the total measurement error, add the
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 Assume that a 5 VDC signal is input to the multimeter on
the 10 V range. Compute the total measurement error using the 90
accuracy specifications: ± (0.0020% of reading + 0.0005% of range).
34
Range
10 VDC
10 VDC
10 VDC
per million) of input" error as shown below.
– –
Reading Error = 0.0020% x 5 VDC = 100 mV
Range Error = 0.0005% x 10 VDC = 50 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
= \ 150 mV
= \ 0.003% of 5 VDC
= \ 30 ppm of 5 VDC
Range Error
(Voltage)
±40 mV
±40 mV
±40 mV
–
34410A/11A/L4411A Service Guide
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