User`s guide

Agilent B1500 User’s Guide, Edition 7 7- 19
Function Details
C-V Sweep Measurement
C-V Sweep Measurement
For the C-V sweep measurements, the multi frequency capacitance measurement
unit (MFCMU) forces AC signal, performs staircase sweep output of DC bias
voltage, and measures impedance for each sweep step.
Available Module
MFCMU can be used for the C-V sweep measurements. For the DC bias output over
± 25 V, use the SMU CMU Unify Unit (SCUU) and SMUs. This expands the
voltage
range up to ± 100 V.
Setup Parameters
The following setup is required to perform the C-V sweep measurements.See “C-V
Sweep” on page 5-26 for the GUI.
1. Set the following on the Channel Setup tab screen.
• Set V Name of the CMU.
• If you use a constant current or voltage source, set Mode (I, V, or
COMMON) and V N
ame or I Name of the SMU.
2. Specify the following parameters for the CMU on the Measurement Setup tab
screen.
Model, x Name Meas
urement parameters
, Cp-G, Cp-D, Cs-Rs, or Z-θ. See
Table 7-2.
Direction Single or double sweep.
Start, Stop Start is t
he DC bias sweep start value. Stop is the stop value
of single sweep or turning back value of double sweep. The
CMU can force up to ± 25 V. Setting resolution is 1 mV.
If the SCUU (SMU CMU Unify Unit) is used, up to ± 100
V output is av
ailable. For the output over ± 25 V, setting
resolution
is 5 mV.
Step, No of Step
Step is step increment of sweep. No of Step v
alue is
calculated from start, stop, and step. Calculated number of
steps must be in range: 2 to 1001.