Agilent Technologies 4155C User Manual page 22

Introducing the 4155C/4156C
Agilent 4155C/4156C is an electronic instrument for measuring and analyzing the
characteristics of semiconductor devices. This one instrument allows you to perform
both measurement and analysis of measurement results.
Following is summary of Agilent 4155C/4156C features.
• Measurement Capabilities
The 4155C/4156C has four highly accurate source/monitor units (SMUs), two
voltage source units (VSUs), and two voltage measurement units (VMUs). The
4156C is designed for Kelvin connections and has high-resolution SMUs
(HRSMUs), so the 4156C is especially suited for low resistance and low current
measurements. You can measure voltage values with a resolution of 1 μV by
using the differential measurement mode of VMUs.
The 4155C/4156C can perform three types of measurements, sweep
measurement, sampling measurement, and quasi-static C-V measurement. The
4155C/4156C also provides knob sweep measurement function for quick sweep
measurements executed by rotating the rotary knob on the front panel.
The 4155C/4156C can perform stress testing. That is, can force a specified dc
voltage or current for the specified duration. Also, you can force ac stress by
using pulse generator units (PGUs), which are installed in Agilent 41501A/B
SMU/Pulse Generator Expander.
• Analysis Function
The 4155C/4156C provides a marker and two lines for analyzing the
measurement results. The 4155C/4156C also provides the automatic analysis
function which moves marker and lines at desired location and displays desired
calculation results automatically after measurement is completed.
• Data storing
The 4155C/4156C allows you to store measurement setup information,
measurement data, and instrument setting information on a 3.5-inch diskette
using the built-in flexible disk drive, or on a NFS server via LAN.
The allowable disk formats are MS-DOS and HP LIF.
You can also use internal memory for temporary data storage. You can save up
to four files in internal memory. You can quickly move information between the
internal memory and the 4155C/4156C working memory.
1-2 Agilent 4155C/4156C User's Guide Vol.1, Edition 11