Agilent Technologies E3633A manual Constant Voltage CV Verifications, Constant Voltage Test Setup

Chapter 3 Calibration Procedures

Constant Voltage (CV) Verifications

Constant Voltage (CV) Verifications

Constant Voltage Test Setup

If more than one meter or if a meter and an oscilloscope are used, connect each to the (+) and (-) terminals by a separate pair of leads to avoid mutual coupling effects. Use coaxial cable or shielded 2-wire cable to avoid noise pick- up on the test leads.

Voltage Programming and Readback Accuracy

This test verifies that the voltage programming and GPIB or RS-232 readback functions are within specifications. Note that the readback values over the remote interface should be identical to those displayed on the front panel.

You should program the power supply over the remote interface for this test to avoid round off errors.

1Turn off the power supply and connect a digital voltmeter between the (+) and (-) terminals of the output to be tested as shown in Figure 3-1.

2Turn on the power supply. Select the 20V/10A* or 50V/4A** range and enable the output by sending the commands:

VOLT:RANG P20V (E3633A)

VOLT:RANG P50V (E3634A)

OUTP ON

3Program the output voltage to zero volt and current to full rated value

(10.0 A)* or (4.0 A)** by sending the commands:

VOLT 0

CURR 10 (E3633A)

CURR 4 (E3634A)

4Record the output voltage reading on the digital voltmeter (DVM). The reading should be within the limit of (0 V ± 10 mV). Also, note that the CV, Adrs, Limit, and Rmt annunciators are on.

5Readback the output voltage over the remote interface by sending the command:

MEAS:VOLT?

6Record the value displayed on the controller. This value should be within the limit of (DVM ±5 mV).

*For Agilent E3633A Model **For Agilent E3634A Model

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