Agilent Technologies N1022A Guía de usuario Pagina 24

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24 N2820/1A User’s Guide
1 General Information
Dynamic Range
Dynamic Range
The N2820A and N2821A probes provide a large dynamic
measurement range (>20,000:1 or 86 dB on the zoomed- in
channel) that allows you to observe both the entire current
waveform and extremely small current fluctuations. As
shown in Figure 13, you could simultaneously view a mobile
phone’s 135 mA receive current pulses and 2 mA idle
current in the presence of 2A transmit current pulses, with
a single acquisition. When using N2820A probes on Infiniium
oscilloscopes, use the powerful new dual- grid view as
explained in “N2820A Probes and Dual- Grid View” on
page 18.
Figure 13 Small Pulses in the Presence of Large Pulses
R
SENSE
Value and Dynamic
Range
Since the N2820A probe has two outputs, each with a
different gain, dynamic range encompasses both channels
while using a single R
SENSE
value. For example, with a
100 mW R
SENSE
resistor, the zoomed- in waveform can display
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