Making Measurements 2
Measuring DC Voltage
U1271A/U1272A User’s Guide 61
• For measuring AC voltage signals with a DC offset, refer to the 
“Measuring AC and DC Signals (U1272A only)” on page 64.
• For measuring DC voltage from a mixed signal in DC measurement 
mode, ensure that the Filter is enabled (Refer to “Enabling and 
disabling the Filter” on page 131). 
• To avoid possible electric shock or personal injury, enable the Low Pass 
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.