Agilent Technologies L34410A User Manual page 140

5 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
as shown below.
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
specifications: ± (0.0020% of reading + 0.0005% of range).
140
Range
10 VDC
10 VDC
10 VDC
Reading Error = 0.0020% x 5 VDC = 100
Range Error = 0.0005% x 10 VDC = 50
Total Error = 100
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
μ
μ μ
V + 50 V = \ 150
= \ 0.003% of 5 VDC
= \ 30 ppm of 5 VDC
Range Error
(Voltage)
±40 μV
±40 μV
±40 μV
per million) of input" error
– –
day accuracy
–
μ
V
V
μ
V
34410A/11A/L4411A User's Guide