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
Table
Equipment
Voltmeter
Shunt resistor
GPIB Controller
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
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.
Calibration 97
