HP 34970A manual To Calculate Total Measurement Error, Understanding the % of reading Error o

Vhh5 o

Chapter 9 Specifications

To Calculate Total Measurement Error

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Refer to “Interpreting Internal Vhh Specifications,” starting on page 416, to get a better understanding of the terminology used and to help you interpret the internal Vhh’s specifications.

The internal Vhh’s accuracy specifications are expressed in the form:

(a a). In addition to the reading error and range error, you may need to add additional errors for certain operating conditions. Check the list below to make sure you include all measurement errors for a given function. Also, make sure you apply the conditions as described in the footnotes on the specification pages.

∙If you are operating the internal Vhh outside the 23 °C ± 5 °C temperature range specified, apply an additional

.

∙For dc voltage, dc current, and resistance measurements, you may

need to apply an additional .

∙For ac voltage and ac current measurements, you may need to apply

an additional or .

Understanding the “ % of reading ” Error o

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5 o		Vhh’s 24-hour dc voltage specification.
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		Reading Error	Reading
Range	Input Level	(% of reading)	Error Voltage
10 Vdc	10 Vdc	0.0015	≤ 150 μV
10 Vdc	1 Vdc	0.0015	≤ 15 μV
10 Vdc	0.1 Vdc	0.0015	≤ 1.5 μV

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