Introduction
HP 4155A/4156A 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.
highly accurate measurements.
HP 4155A/4156A has four highly accurate source/monitor units (SMUs), two
voltage source units (VSUs), and two voltage measurement units (VMUs).
The HP 4156A is designed for Kelvin connections and has high-resolution
SMUs (HRSMUs), so HP 4156A is especially suited for low resistance and low
current measurements.You can measure voltage values with a resolution of
0.2
V by using the dierential measurement mode of VMUs.
reliability testing.
HP 4155A/4156A can perform
stress
testing. That is, can force a specied dc
voltage or current for the specied duration.
Also, you can force ac stress by using pulse generator units (PGUs), which are
installed in HP 41501A SMU/Pulse Generator Expander. The HP 41501A is
attached to HP 4155A or HP 4156A, and can be equipped with a ground unit
(GNDU), high power SMU (HPSMU), two medium power SMUs (MPSMUs), or
two PGUs.
data storing and printing.
HP 4155A/4156A can print and store, in addition to performing measurement
and analysis.You can store measurement setup information, measurement
data, and instrument setting information on a 3.5-inch diskette inserted into
the disk drive of HP 4155A/4156A. And you can print the setting information
and measurement results on a plotter or printer that is connected to
HP 4155A/4156A.
remote control.
HP 4155A/4156A can be controlled by an external controller via HP-IB by
using remote control commands. These commands are based on Standard
Commands for Programmable Instruments (SCPI), so you can easily develop
measurement programs.
HP 4155A/4156A has internal HP Instrument BASIC, so you can develop and
execute measurement programs by using the HP 4155A/4156A only, without
using an external controller.
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