Specifications
CHAPTER 1
PERFORMANCE
TESTS
1-1. INTRODUCTION
This chapter provides the test procedures to verify that the
HP
4285A meets the specifica-
tions listed
in
the
HP
4285A Operation Manual.
All
tests can
be
performed without access-
,
ing the interior of the instrument. Performance tests
are
used to perform incoming inspec-
tion and to verify that the
HP
4285A
is
within its performance specifications after trouble-
shooting or adjustment have
been
performed. If the performance tests indicate that the
HP
4285A
is
not within specifications, check your test setup, then proceed to Adjustments
or
Troubleshooting
as
required.
NOTE
Allow the
HP
4285A to warm up for a minimum of 30 minutes be-
fore starting any of the performance tests.
NOTE
The
performance tests
are
valid only when performed
in
an
ambient
temperature of
23
0
C
±5°
C.
1-2. TEST EQUIPMENT
Tables
1-1
and 1-2 list the test equipment required to perform the tests described in this
chapter.
Use
only calibrated test instruments when performance testing the
HP
4285A. If
the recommended test equipment
is
not available, equipment with specifications equal
to
or
surpassing those of the recommended equipment may
be
used.
NOTE
Components used
as
standards must
be
(1)
calibrated using
an
instrument whose specifications
are
traceable to the National In-
stitute of Standards and Technology
(NIST)
or
an
equivalent stan-
dards group, or
(2)
calibrated directly by
an
authorized calibration
organization, such
as
NIST.
The
calibration cycle depends on the
stability specification of each component.
NOTE
The
HP
4285A Performance Test Program
can
be
used for shorten-
ing the test time and to avoid human error.
The
HP
Part Number for
the program
is
as
follows.
Description
HP
Part Number
Test Program (5.25 inch floppy disk)
04285-65001
Test Program
(3.5
inch floppy disk)
04285-65002
1·1