User`s guide

4-10 Agilent 4155C/4156C User’s Guide Vol.2, Edition 6
Quasi-static C-V Measurements
Defining Measurement Conditions
To Define Measurement Units
Press the Chan front-panel key to define the measurement units. The CHANNELS:
CHANNEL DEFINITION screen appears.
1. MEASUREMENT MODE
Select the QSCV secondary softkey for the quasi-static CV (QSCV)
measurement.
2. VNAME
Enter a unique name for the voltage variable. For example, enter Vg for gate
voltage. If the channel does neither V force nor V measurement, you can omit
VNAME.
3. INAME
Enter a unique name for the current variable. For example, enter Ig for gate
current. If the channel does neither I force nor I measurement, you can omit
INAME.
4. MODE
Select one of the following softkeys:
• V: Voltage output (for SMU, VSU, and PGU)
• I: Current output (for SMU)
• COMMON: Circuit common (for SMU and GNDU)
In the QSCV measurements, pulsed output is not available.
5. FCTN
Select one of the following softkeys to set the output function:
• VAR1: QSCV sweep output function (for the V mode SMU)
• CONST: Constant output function (for SMU, VSU, PGU, and GNDU)
VNAME and INAME
You can use VNAME and INAME names in user function definitions or for analysis
on the GRAPHICS/LIST screens. These names must consist of up to six
alphanumeric characters. The first character must be a letter of the alphabet.
To disable a unit
Select the DELETE ROW softkey. The settings for the unit are deleted.