Performing the Verification Tests

Verification and Calibration - B

The following procedures assume you understand how to operate the ac source from the front panel as explained in Chapter 4.

When performing the verification tests from a GPIB controller, you may have to consider the relatively slow settling times and slew rates of the ac source as compared to computer and system voltmeters. Suitable WAIT statements can be inserted into the test program to give the ac source time to respond to the test commands.

Perform the following tests for operation verification in the order indicated.

1.Turn-On Checkout

2.Voltage Programming and Measurement Accuracy

3.Current Measurement Accuracy

Turn-On Checkout Procedure

Perform the Turn-On Checkout as directed in Chapter 3.

NOTE: The ac source must pass turn-on selftest before you can proceed with the verification tests.

AC Voltage Programming and Measurement Accuracy

This test verifies the voltage programming, GPIB measurement, and front panel meter functions. Values read back over the GPIB should be the same as those displayed on the front panel.

If more than one meter or if a meter and an oscilloscope are used, connect each to the sense terminals by separate leads to avoid mutual coupling effects.

Action

Normal Result

1.Make sure the ac source is turned off. Connect the DVM and ratio transformer as shown in the test setup in Figure B-1.

2.	Turn on the ac source with no load. In the Output menu, execute	CV annunciator on.
	the *RST command to reset the unit. Enable the output by	Output current near 0.
	pressing Output On/Off. Program the output voltage as follows:
	VOLT 300, FREQ 45, SHAPE:SIN, CURR 1
3.	Record voltage readings at the DVM1 and on the front panel	Readings within specified High
	display.	range limits (300 V/45 Hz).

4.Program FREQ 400

5.	Record voltage readings at the DVM1 and on the front panel	Readings within specified High
	display.	range limits (300 V/400 Hz).

4.Program FREQ 1000, CURR:PEAK 40

7.	Record voltage readings at the DVM1 and on the front panel	Readings within specified High
	display.	range limits (300 V/1 kHz).

1Multiply the DVM reading by the transformer ratio if a ratio transformer is used.

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