User`s guide

4-14 Agilent 4155C/4156C User’s Guide Vol.2, Edition 6
Quasi-static C-V Measurements
Defining Measurement Conditions
To Define Measurement Conditions
Press the Meas front-panel key, and select the MEASURE SETUP softkey. The
MEASURE: QSCV MEASURE SETUP screen appears.
1. UNIT and FCTN
Select one of the secondary softkeys to specify the measurement unit. The
FCTN field just displays the function of the unit.
2. RANGE
Select one of the secondary softkeys to specify the measurement range.
3. CNAME
Enter a unique name for the capacitance measurement data variable. Up to six
alphanumeric characters. The first character must be a letter of the alphabet.
4. INAME
Enter a unique name for the leakage current measurement data variable. Up to
six alphanumeric characters. The first character must be a letter of the alphabet.
5. INTEG TIME: QSCV and LEAK
QSCV: Enter the integration time for the capacitance measurement.
0.04 to 400 sec for 50 Hz line frequency, 0.033333 to 333.33 sec for 60 Hz.
LEAK: Enter the integration time for the leakage current measurement.
0.02 to 2 sec for 50 Hz line frequency, 0.016667 to 1.6667 sec for 60 Hz.
The setting value is rounded to the following value:
integ time = NPLC value / selected line frequency
where, NPLC value is integer in the range: 2 to 20000 for the capacitance
measurement, and 1 to 100 for the leakage current measurement.
The
Short, Medium, and Long front-panel keys have no effect for the QSCV
measurement.
6. LEAK COMPENSATION
Select the ON secondary softkey to do the leakage current compensation, or
OFF to not perform the compensation.
7. ZERO CANCEL
Select the ON secondary softkey to enable the capacitance offset cancel
function, or OFF to disable the function. After the setup is completed, press the
green-key, then the
Stop front-panel key to perform the offset measurement.