Chapter 3 Calibration Procedures

Automating Calibration Procedures

Automating Calibration Procedures

You can automate the complete verification procedures outlined in this chapter if you have access to programmable test equipment. You can program the instrument configurations specified for each test over the remote interface. You can then enter readback verification data into a test program and compare the results to the appropriate test limit values.

You can also enter calibration constants from the remote interface. Remote operation is similar to the local front-panel procedure. You can use a computer to perform the adjustment by first selecting the required setup. The calibration value is sent to the power supply and then the calibration is initiated over the remote interface. The power supply must be unsecured prior to initiating the calibration procedure. An Agilent BASIC program for calibration over the GPIB interface is listed at the end of this chapter.

For further details on programming the power supply, see chapters 3 and 4 in the Agilent E3631A User's Guide.

Recommended Test Equipment

The test equipment recommended for the performance verification and adjustment procedures is listed below. If the exact instrument is not available, use the accuracy requirements shown to select substitute calibration standards.

Table 3-1 Recommended Test Equipment

Instrument

GPIB Controller

Oscilloscope

RMS Voltmeter

Digital Voltmeter

Electronic Load

Resistive Loads (RL)

Current monitoring Resistor (Shunt)

Requirements

Full GPIB capabilities

100 MHz

20 MHz

Resolution: 0.1 mV

Accuracy: 0.01%

Voltage Range: 50 Vdc

Current Range: 10 Adc

Open and Short Switches

Transient On/Off

1.2Ω, 100 W

25Ω, 100 W

0.1Ω, 0.01%

Recommended

Model

Agilent 82341C interface card

Agilent 54602A

Agilent 34401A

Agilent 6063A

Use

Programming and readback accuracy

Display transient response and ripple & noise waveform

Measure rms ripple & noise

Measure dc voltages

Measure load and line regulations and transient response time.

Measure ripple and noise

Constant current test setup

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Agilent Technologies E3631A manual Automating Calibration Procedures, Recommended Test Equipment