Chapter 3 Calibration Procedures
Automating Calibration Procedures
44
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 Requirements
Recommended
Model
Use
GPIB Controller Full GPIB capabilities
Agilent 82341C
interface card
Programming and
readback accuracy
Oscilloscope
100 MHz real time
digitizing scope with a
400 MSa/s minimum
sampling rate
Probe: single-ended
Agilent 54602A
Display transient response
and ripple & noise
waveform
RMS Voltmeter 20 MHz Measure rms ripple & noise
Digital Voltmeter
Resolution: 0.1 mV
Accuracy: 0.01%
Agilent 34401A Measure dc voltages
Electronic Load
Voltage Range: 50 Vdc
Current Range: 10 Adc
Open and Short Switches
Transient On/Off
Agilent 6063A
Measure load and line
regulations and transient
response time.
Resistive Loads (R
L
)
1.2Ω, 100 W
25Ω, 100 W
Measure ripple and noise
Current monitoring
Resistor (Shunt)
0.1Ω, 0.01% Constant current test setup
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