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Calibration 97
B
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.
Table B-1. Equipment Required For Calibration
Equipment Characteristics Recommended Model
Voltmeter
Dc accuracy 0.005%, 6 digits Agilent 3456A or 3458A
Shunt resistor
100 A, 0.001
Ω
, 0.04%, 100 W
Guildline 9230/100
GPIB Controller
For Calibration over the GPIB
HP Vectra (or IBM compatible) with
GPIB Interface, or Agilent BASIC
series
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.