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Calibration
Introduction
The power supply may be calibrated either from the front panel or from a controller over the GPIB. The procedures given
here apply to all models.
Important
These instructions do not include verification procedures. If you need to perform verification as a
prerequisite to or as part of your calibration procedure, see "Appendix B - Verification".
Equipment Required
The equipment listed in Table B-1, or equivalent, is required for calibration.
Equipment
Voltmeter
Shunt resistor
GPIB Controller
General Procedure
Because the power supply output must be enabled during calibration, voltages or currents
hazardous to personnel and/or damaging to equipment can appear at the output terminals.
Parameters Calibrated
The following parameters may be calibrated:
•
Output voltage.
•
Output voltage readback.
•
Overvoltage protection (OVP).
•
Output current.
•
Output current readback.
You do not have to do a complete calibration each time. If appropriate, you may calibrate only the voltage or current and
proceed to "Saving the Calibration Constants".
Test Setup
Figure B-1 shows the test setups required for voltage and current calibration for each power supply series.
Table B-1. Equipment Required For Calibration
Characteristics
Dc accuracy 0.005%, 6 digits
100 A, 0.001 Ω, 0.04%, 100 W
For Calibration over the GPIB
Recommended Model
Agilent 3456A or 3458A
Guildline 9230/100
HP Vectra (or IBM compatible) with
GPIB Interface, or Agilent BASIC
series
Calibration 97
B
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