Agilent Technologies 6843A, 6834B Verification and Calibration, Equipment Required, Introduction

B

Verification and Calibration

Introduction

This appendix includes verification and calibration procedures for the Agilent 6814B/6834B/6843A AC Power Solutions. Instructions are given for performing the procedures either from the front panel or from a controller over the GPIB.

The verification procedures do not check all the operating parameters, but verify that the ac source is performing properly. Performance Tests, which check all the specifications of the ac source, are given in the applicable ac source Service Manual.

Because the output of the ac source must be enabled during verification or calibration, proceed with caution, since voltages and currents will be active at the output terminals.

Important Perform the verification procedures before calibrating your ac source. If the ac source passes the verification procedures, the unit is operating within its calibration limits and does not need to be recalibrated.

WARNING LETHAL VOLTAGES. Ac sources can supply 424 V peak at their output. DEATH on contact may result if the output terminals or circuits connected to the output are touched when power is applied. These procedures must be performed by a qualified electronics technician or engineer trained on this equipment.

Equipment Required

The equipment listed in the following table, or the equivalent to this equipment, is required for verification and calibration.

Equipment

Digital Voltmeter

Current Monitor1

Ratio Transformer2

Load Resistors

Impedance Resistor

GPIB Controller

Table B-1. Equipment Required

Characteristics

Resolution: 10 nV @ 1 V

Readout: 8.5 digits

Accuracy: >20 ppm

0.01Ω, ±200 ppm, (Agilent 6814B/6834B) 0.001 Ω, ±200 ppm, (Agilent 6843A)

30:1 ratio, 50 ppm, 45 Hz to 1 kHz

2 − 15 Ω, > 1.5 kW (Agilent 6814B/6834B)

1 − 5 Ω, > 4.8 kW non-inductive (Agilent 6843A) 1 Ω, 100 Watts min. (Agilent 6843A only)

Full GPIB capabilities

Recommended Model

Agilent 3458A

Guildline 7320/0.01 Norma Gerts Instruments

HP Series 200/300 or equivalent

1The 4- terminal current shunt is used to eliminate output current measurement error caused by voltage drops in the load leads and connections. Connect the voltmeter directly to these current-monitoring terminals.

2A ratio transformer is required only when verifying output voltage readback to MIL-STD-45662A 4:1 test equipment ratio requirements.

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