Agilent Technologies EasyEXPERT Guide de l'utilisateur Page 263

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Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1 4- 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 Measurement Resources
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. Or use the high voltage bias-T and HVSMU to expand
the voltage range up to
3000 V.
Setup Parameters
The following setup is required to perform the C-V sweep measurements.See “C-V
Sweep” on page 2-26 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 Name or I Name of the SMU.
2. Specify the following parameters for the CMU on the Measurement Setup tab
screen.
Model, x Name Measurement parameters. See Table 4-2.
Direction Single or double sweep.
Linear/Log Linear or logarithmic sweep. For logarithmic sweep, the
number steps in one decade is 10, 25, or 50.
Start, Stop Start is the 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.
If the SCUU (SMU CMU Unify Unit) is used, up to 100
V output is available.
If the high voltage bias-T and HVSMU are used, up to
3000 V output is available.
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