User`s guide

Agilent 4155C/4156C User’s Guide Vol.2, Edition 6 4-11
Quasi-static C-V Measurements
Defining Measurement Conditions
To Set up QSCV Sweep Source
The QSCV sweep source is the source unit defined as VAR1 in the CHANNELS:
CHANNEL DEFINITION screen. To set up the sweep source, press the
Meas
front-panel key. The MEASURE: QSCV SETUP screen appears.
1. VAR1: SWEEP MODE
Select one of the following softkeys to set the sweep mode:
• SINGLE: single sweep mode (start to stop)
• DOUBLE: double sweep mode (start to stop to start)
2. VAR1: START
Enter the sweep start voltage.
3. VAR1: STOP
Enter the sweep stop voltage. Upper or lower limit of the output voltage.
4. VAR1: STEP
Enter the sweep step voltage. The minimum available value is double the
resolution of the output range. You must set the START, STOP, and STEP values
so that the NO. OF STEP value is in the range: 1 to 1001. The value is calculated
from the following formula:
NO. OF STEP = | START - STOP | / | STEP | - 1
If the NO. OF STEP value is set to 1, the measurement unit executes a one-point
capacitance measurement between the START and STOP values.
5. VAR1: COMPLIANCE
Enter the compliance value for the sweep source.
6. QSCV MEAS VOLTAGE
Enter the capacitance measurement voltage. The minimum value is double the
resolution of the output range, and the maximum value is 10 V. The value must
be ≤ |STEP|. If you enter a value greater than the |STEP| value, this value is
automatically set to the same value as the |STEP| value.
If you enter the value greater than or equal to |START− STOP|, the measurement
unit executes a one-point capacitance measurement between the START and
STOP values.
7. HOLD TIME
Enter the hold time. 0 to 655.35 seconds, 10 ms resolution.