HP 4155A, User'S Task Manual

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Introducing the HP 4155A/4156A
An Overview of Functions
Setup pages.
Y ou set the measurement mode , parameters , and conditions by lling in the
blank elds on the appropriate pages . Y ou can enter variable names for the
output and measurement values , and you can dene more complex variables
called user functions . F or example , you can specify a variable name for the
forward current, such as \If ", and refer to this variable on other pages
instead of the unit name .
Results display.
Y ou can display measurement results on the screen in graphics or list style .
When measurement starts , the results page appears according to the display
setting information that you set. Of course , the HP 4155A/4156A plots or
displays the results as the measurement progresses . Y ou can also modify
the measurement parameters and conditions on the results page without
returning to the setup page .
Knob sweep.
F or knob sweep measurement, you can vary the sweep range by rotating
the rotary knob . The knob sweep function is useful when you need to
quickly make a rough measurement of your DUT characteristics . Y ou only
need to dene the channel assignments , then you can start the knob sweep
measurement. Y ou can also change parameters and conditions by using
secondary softkeys on the knob sweep page , and you can easily copy these
changes so that they will be used in the normal sweep mode .
Stress.
HP 4155A/4156A can force stress to your DUT for a specied duration. Y ou
can set the stress force parameters and channels independently from the
measurement channels . And the stress duration is controlled accurately .
Y ou can force dc stress , and also ac stress because the HP 41501A can be
equipped with pulse generators . Y ou can perform reliability evaluations by
repeating the stress-measurement cycle .
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