Agilent Technologies 665xA, 664xA, 667xA, 669xA Calibration, Equipment Required, General Procedure

A

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 erequisite to or as part of your calibration procedure, see “Appendix B - Verification”.

Equipment Required

The equipment listed in Table A-1, or equivalent, is required for calibration.

Table A-1. Equipment Required for Calibration

Equipment		Characteristics		Recommended Model
Voltmeter	D-c accuracy 0.005%, 6 digits			Agilent 3456A or 3458A
Shunt resistor
Agilent 6641A, 51A, 52A	100	A, 0.01 Ω, 0.04%, 100 W		Guildline 9230/100
Agilent 6642A, 43A, 44A, 45A,	15 A, 0.1 Ω, 0.04%, 25 W			Guildline 9230/15
6643A, 54A, 55A
Agilent 6671A	300	A, 0.001	Ω, 0.04%,100 W	Guildline 9230/300
Agilent 6672A, 73A, 74A, 75A	300	A, 0.001	Ω, 0.04%, 100 W	Guildline 9230/300
Agilent 6680A, 81A, 6690A	1000 A, 0.1 mΩ, 0.05%			Burster 1280S
Agilent 6682A, 83A, 84A,	300	A, 0.001	Ω, 0.04%,100 W	Guildline 9230/300
6691A, 92A
	For Calibration Over the GPIB
GPIB Controller	IBM compatible PC with GPIB Interface

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.

ENERGY HAZARD. Series 668xA/669xA supplies can provide more than 240 VA at more than 2 V. If the output connections touch, severe arcing may occur resulting in burns, ignition or welding of parts. Do not attempt to make connections to live output circuits.

Parameters Calibrated

The following parameters may be calibrated:

•Output voltage.

•Output voltage readback.

Calibration 95