Front Panel Operation
Instructions for Voltage Measurements 4
4-21
2/06/15 10:52am
Setup
Menu
Statistics
Reference
Menu
Input 2
V
1.0030
1.7035818
kHz
Auto Range 2.2 V
Peak-to-Peak
Select
Current
Shunt
+/- 22.0 ppm (1 year) 83 days since calibration
Filter 16/16
hvi004.eps
To determine the error of an ac source, check the specifications for proper test
uncertainty ratios and measure the source. To determine the error of an ac
voltmeter using measurement mode, apply an ac source to the Product input and
the ac voltmeter input in parallel. See Figure 4-1 for test lead connection
guidelines.
Transfer Mode
In Transfer Mode, the Product can make ac measurements with improved
specifications by comparing it against a known dc value of the same magnitude.
See AC/DC Transfer Mode in the Specifications for a comparison of Transfer
Mode uncertainties to Absolute uncertainties obtained in the Measurement Mode.
To make a transfer, a positive and negative dc voltage of the same magnitude
must be set and averaged (see Establish a Reference). The Transfer Mode is
enabled by pushing the Set Reference softkey which stores the reading and
opens the reference menu. After a reference is set, subsequent readings are
compared against the averaged reference and shown after the selected formula
is applied.
Transfer mode example
To check a calibrator’s ac output at 2 V, at multiple frequencies and for the
lowest uncertainty:
1. Select INPUT 2 and apply a precise +2 V dc voltage to INPUT 2.
2. Select the Set Reference softkey. The Product establishes the + 2 V dc input
as a reference against subsequent readings.
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