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20 N2820/1A User’s Guide
1 General Information
Charge—A New Measurement
Charge—A New Measurement
For the N2820A and N2821A probes, the oscilloscopes
include a new measurement, Charge. This measurement
determines the total current consumption over time with the
results listed in ampere- hours (Ah). For N2820A probes, the
measurement includes the area under the curve across both
zoomed- in and zoomed- out waveforms.
Figure 10 shows a Charge measurement on an Infiniium
oscilloscope’s with Zoom Mode applied and zoom window
gating enabled. Figure 11 on page 21 shows the
measurement on an InfiniiVision oscilloscope.
NOTE Always connect the ground lead when probing mobile phones, as
explained in “Measurements on Battery Powered Devices” on page 12.
Figure 10 Charge Measurement of Mobile Phone Current in Standby
State with Zoom Mode (Infiniium Oscilloscope)
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