2
Making Measurements
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
2 Press the
Figure 2-7
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
NOTE
– Press
64
switch to:
a For voltage measurements:
b For current measurements:
key twice to cycle the measurement function to the AC+DC
mode (
). Probe the test points and read the display.
AC+DC voltage display
to cycle through the available dual display combinations. See
Dual
E xit
Appendix B, "Dual Display Combinations Using the Dual Key,"
page 159 to learn more.
to enable the frequency test mode for voltage measurements.
See
"Frequency Test Mode"
or
.
or
.
on page 101 to learn more.
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