
General Information 1
Introduction
N2820/1A User’s Guide 9
Infiniium Dual-Grid View The N2820A probe provides two channel- input cables which
allow two simultaneous views of the current waveform: a
high- gain zoomed- in and a low- gain zoomed- out view. On
Infiniium oscilloscopes, both zoomed- in and zoomed- out
waveforms can be simultaneously displayed in dual- grid
view, where each waveform can be viewed in a different
time span. To learn more about dual- grid view, refer to
“N2820A Probes and Dual- Grid View” on page 18.
InfiniiVision oscilloscopes do not support dual- grid views.
The zoomed- in channel has 500 kHz bandwidth and the
zoomed- out channel has 3 MHz bandwidth. N2821A probes,
having only one channel- input cable, do not support the
simultaneous display of zoomed-out and zoomed-in views.
NOTE There is no upgrade available to convert an N2821A (1 channel) probe to
an N2820A (2 channel) probe.
Probe Heads The probe is supplied with the N2822A, N2824A, and
N2825A interchangeable R
SENSE
probe heads. The N2822A
and N2824A heads include different R
SENSE
resistor values.
The N2825A user- defined head does not include an R
SENSE
resistor and is selected in situations when you want to use
your own R
SENSE
resistor that you have mounted on your
DUT. To learn about configuring and using the heads, refer
to Chapter 2, “Probing”.
Make-Before-Break (MBB)
Connectors
Five Make- Before- Break (MBB) connectors are provided with
the probes. The MBB connectors allow you to quickly probe
multiple locations on your DUT without interrupting the
circuit under test. Refer to “Make- Before- Break
Connectors” on page 40 for more information.
Channel Identification Rings When multiple probes are connected to the oscilloscope, use
the channel identification rings to associate the channel
inputs with each probe. Place one colored ring near the
probe’s channel connector and place an identical color ring
near the probe head.
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