HP 4156B is an electronic instrument for measuring and analyzing the characteristics of semiconductor devices. This one instrument can perform measurement and analysis of measurement results.
- Measurement Capabilities
HP 4156B has four highly accurate source/monitor units (SMUs), two voltage source units (VSUs), and two voltage measurement units (VMUs). It is designed for Kelvin connections and has high-resolution SMUs (HRSMUs), so it is especially suited for low resistance and low current measurements. It can measure voltage values with a resolution of 1 uV by using the differential measurement mode of VMUs.
HP 4156B can perform two types of measurements, sweep measurement and sampling measurement. It also provide knob sweep measurement function for quick sweep measurements executed by rotating the rotary knob on the front panel. It can perform stress testing. That is, can force a specified DC voltage or current for that specified duration. Also, we can force AC stress by using pulse generator units (PGUs).
- Analysis Function
HP 4156B provides a marker and two lines for analyzing the measurement results. It also provides the automatic analysis measurement results. It 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
HP 4156B allows storage of measurement setup information, measurement data, and instrument setting information on a 3.5" floppy disk using the built-in floppy disk drive, or on a NFS server via LAN. The allowable disk formats are MS-DOS and HP LIF.Internal memory can also be used for temporary data storage. Up to four files can be saved in the internal memory.
Printing and Plotting
HP 4156B allows printing of setup data, measurement, results and screen images on a printer or plotter that is connected to it via HP-IB interface, or parallel I/O interface. It can also store TIFF, PCL, or HP-GL file. Hard copies can also be made in a remote printer via LAN.
HP 4156B can be controlled by an external controller via HP-IB by using remote control commands. We can also write programs in HP Instrument BASIC to automate measurement taking tasks.