HP E1418A, Service Manual

Page: 31 / 96

Performance
Verification Tests
Performance Verification Tests give a high confidence that the module is
operational and meets its specifications. The Performance Verification Tests
can be used as acceptance tests when the module is first received.
The Performance Verification Tests should be run at the calibration interval
(Hewlett-Packard recommends a one year interval). Run the tests to
characterize the module against the specifications. Run the Performance
Verification Tests after any adjustment to verify the adjustment.
If the module fails any Performance Verification Tests, adjustment or repair
is needed.
Performance Test
Record
Table 4-1, beginning on page 46, provides space to enter the results of each
Performance Verification test. The table also lists the upper and lower test
limits.
About Program
Examples
In this manual test procedures are shown with a portion of an example
program that performs the test. These examples are in ANSI C format and
complete program files are included on the disk supplied with this manual.
Most examples in this chapter are included. The examples are ASCII files
with the *.c extension.
Note
The
int
data type is system dependent. These examples were developed on a
system where int is a 16-bit integer. Other systems may define int to be a
different width.
In the examples, the Hewlett-Packard VISA Transition Library is used for
I/O operations with the VXIbus. A Hewlett-Packard command module
(HP E1405/E1406) is used and controlled via HP-IB.
To use the Hewlett-Packard VISA Transition Library (abbreviated as VTL),
include the visa.h header file.
#include visa.h
Hewlett-Packard VTL function calls and data types typically begin with the
lower case letters vi. Output and enter are performed with functions named
viPrintf and viScanf . Both these functions require a session (a VTL
defined I/O function) to uniquely identify the device being controlled. In the
examples, the session has been named
dac
.
Chapter 4 Verification Tests 31]