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B
Performance Tests and Calibration
Introduction
This appendix contains test procedures to verify that the dc source is operating normally and is within
published specifications. There are three types of tests as follows:
Built-in Self Tests
These tests run automatically when the dc source is turned on. They
check most of the digital circuits and the programming and readback
DACs.
Turn on Checkout
These tests, described in chapter four, provide a high degree of
confidence that your unit is operating properly.
Calibration Verification
/Performance Tests
These tests, documented in this appendix, verify that the dc source is
properly calibrated, and that the dc source meets all of the specifications
listed in Appendix A
If the dc source fails any of the tests or if abnormal test results are obtained after performing a
calibration, return the unit to an Agilent Technologies repair facility.
This appendix also includes calibration procedures for the Agilent N3280A. Instructions are given for
performing the procedures from a controller over the GPIB.
IMPORTANT: Perform the Programming Accuracy and Readback Accuracy tests before calibrating
your dc source. If the dc source passes the Programming Accuracy and Readback
Accuracy tests, the unit is operating within its calibration limits and does not need to be
re-calibrated.
Equipment Required
The equipment listed in the following table, or the equivalent to this equipment, is required for the
calibration and performance tests. A test record sheet with specification limits (when test using the
recommended test equipment) may be found at the back of this section.
Table B-1. Equipment Required
Type Specifications Recommended Model
Digital multimeter Resolution: 10nV @ 1V; Readout: 8 1/2
digits; Accuracy: 20 ppm
Agilent 3458A or
equivalent
Electronic load 20 V, 5A minimum, with transient capability
and a a slew rate of 0.833A/µs or better.
Agilent N3300A
mainframe, with N3303A
module 6063A/B
GPIB controller Full GPIB capabilities (only required if you
are calibrating the unit over the GPIB)
HP Series 200/300 or PC
with GPIB capability