Keysight U1271A - Figure 2-6 Filter for DC Voltage Measurements; Using the Filter Function for DC Measurement

Making Measurements 2
Measuring DC Voltage
U1271A/U1272A User’s Guide 63
Using the Filter Function for DC measurement
Turn on the Filter Function when measuring DC voltage
and/or current from a mixed signal (AC+DC components) in
the DC voltage measurement mode. See “Enabling and
disabling the Filter” on page 131 for more information.
The Filter Function blocks and attenuates AC signals to help
you read the DC measurement from a mixed signal. For
instance, a DC offset with an AC voltage signal presence (for
example, AC 100 V/220 V applied to the 3 V range).
The will appear if the Filter is enabled in the
multimeter’s Setup.
Figure 2-6 Filter for DC voltage measurements
WARNING
• To avoid possible electric shock or personal injury, enable the
Filter to verify the presence of hazardous DC voltages. Displayed
DC voltage values can be influenced by high frequency AC
components and must be filtered to assure an accurate reading.
• Do not enable any of the dual display options when performing
measurements to verify the presence of hazardous DC voltages.
(U1272A only)