Dynamic Range - Keysight N2820A User Manual

Dynamic Range

R Value and Dynamic
SENSE
N2820/1A User's Guide
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 21, 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
Zoomed-In/Zoomed-Out Waveforms"
Figure 21
Since the N2820A probe has two outputs, each with a different
Range
gain, dynamic range encompasses both channels while using a
single R
SENSE
zoomed-in waveform can display about 50 µA and the zoomed-out
channel can display about 2.2A for a dynamic range of
approximately 93 dB:
"To Simultaneously View
Small Pulses in the Presence of Large Pulses
value. For example, with a 100 mΩ R
Making Measurements
Dynamic Range
on page 36.
resistor, the
SENSE
2
49