Keysight B2980B Series User Manual

Keysight B2980B User’s Guide, Edition 1 129
How to Perform Measurement
Measurement Considerations
Capacitive Coupling
Capacitive coupling between the different potential will cause the noise current
when the applied voltage is changed or when the capacitance is changed.
It is important to apply shielding for eliminating the capacitive couple with voltage
fluctuation and to prevent vibration for blocking the change of the coupling
capacitance.
Light
In some devices such as diode and transistor, electron-hole pairs generated by
light can create currents which negatively impact low current measurements.
Current caused by light is unstable and slow to change. It is important to apply
shielding for cutting off the light and to prevent reflection inside the shielding.
I = C + V
dt dt
dV dC
with Dielectric
Change of
applied
voltage
Vibration
Dielectric
absorption
Vibration
Dielectric
A
Voltage Current Voltage Current
Vibration Current
Time
Time
A
Time
Time
A
Time
Time

Keysight B2980B Series Specifications

General

Brand	Keysight
Model	B2980B Series
Category	Measuring Instruments
Language	English