User`s guide

2 Making Measurements

Measuring AC and DC Signals

44 U1273A/U1273AX User’s Guide

Figure 2-7 AC+DC voltage display

Figure 2-8 AC+DC current display

NOTE

• For better accuracy when measuring the DC offset of an AC voltage,

measure the AC voltage first. Note the AC voltage range, then manually

select a DC voltage range equal to or higher than the AC range. This

procedure improves the accuracy of the DC measurement by ensuring

that the input protection circuits are not activated.

• Press to cycle through the available dual display combinations. See

Appendix B, “Dual Display Combinations Using the Dual Key,” starting

on page 157 to learn more.

• Press to measure the frequency of the AC+DC voltage source.

See “Measuring Frequency” on page 81 to learn more.

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Dual