To Determine Maximum Input Voltage And Current - Keysight N2820A User Manual

2 Making Measurements

To Determine Maximum Input Voltage and Current

To Determine Maximum Input Voltage and Current
Maximum Input Voltage
Maximum Input Current
44
The probe's maximum input voltage and current values are derived
using the equations in this section. Exceeding these values may
result in the signal being clipped on the screen. To perform the
calculations, you need the probe's maximum output voltage (linear
operation) and the Gain, which are documented in
"Characteristics and Specifications"
listed here:
Maximum Output Voltage: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12V
A (Zoom-In) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
probe
A (Zoom-Out). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
probe
The maximum differential input voltage is given by the following
equation. For a zoomed-in signal, the maximum input voltage
would be 40 mV. For a zoomed-out signal, the maximum input
voltage would be 1.2 V.
The following equation gives the maximum input current:
The value of the R
SENSE
installed on the probe:
N2822A probe head: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mΩ
N2824A probe head: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mΩ
N2825A probe head: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .user defined
(Table 11
V
max. output
V
≤ ------------------------
max. input
A
probe
V
max. output
I ≤ ----------------------------------- -
max. input
A R
×
probe
resistor depends on the probe head that is
Chapter 5,
on page 77) and
SENSE
N2820/1A User's Guide