User`s guide

Measurement Tutorial 3
34450A User’s Guide 81
Dual Measurement Considerations
The dual measurements mode allows users to make two
measurements in one display. During dual measurement
mode, the display will show two separate measurements and
there is a switching delay between both measurements.
The table below shows some of the applications that can be
measured using dual measurement mode:
DC voltage dynamic range in dual measurement
When measuring DC and AC in dual measurement mode,
make sure the DC + AC components do not exceed the
multimeter ADC dynamic range. The 34450A has a dynamic
range of ±1.2 V or 120% of full scale for each DCV ranges.
For example, the DC offset of the signal as shown in
Figure 3- 3 causes the input to exceed the upper limit ADC
dynamic range. This may cause errors in DC component
measurement.
Dual Functions Combinations Application
DCV & ACV Measure AC signal with DC offset from an amplifier output.
Measure AC ripple noise and DC output voltage from a power supply
DCV & DCI Measure DC voltage and DC current on a electronic circuit
DCV & ACI Inverter application
ACV & DCI Inverter application
ACV & ACI Measure primary & secondary signal of a transformer circuit
ACV / ACI & Freq Measure frequency of the line voltage