Keysight U1271A - Measuring AC and DC Signals (U1272 A Only); Figure 2-7 AC+DC Voltage Display

2 Making Measurements
Measuring AC and DC Signals (U1272A only)
64 U1271A/U1272A User’s Guide
Measuring AC and DC Signals (U1272A only)
Your multimeter is capable of displaying both AC and DC
signal components, voltage or current, as two separate
readings or one AC+DC (rms) value combined.
1 Set up your multimeter according to your desired
measurement. Set the rotary switch to:
i For voltage measurements: or .
ii For current measurements: or .
2 Press the key twice to cycle the measurement
function to the AC+DC mode ( ). Probe the test points
and read the display.
Figure 2-7 AC+DC voltage display
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.
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NOTE
• Press to cycle through the available dual display combinations. See
Appendix B, “Dual Display Combinations Using the Dual Key,” starting
on page 179 to learn more.
• Press to enable the frequency test mode for voltage
measurements. See “Frequency Test Mode” on page 101 to learn more.
Exit
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