Performing the Tests

General Measurement Techniques

Figure B-1 shows the setup for the tests. Be certain to use load leads of sufficient wire gauge to carry the output current (see Table 4-1). To avoid noise pickup, use coaxial cable or shielded pairs for the test leads.

Programming the Power Supply

Table 1-lb, Table 1-2b, Table 1-3b and Table 1-4b in Chapter 1 list the programming voltage and current ranges for each model. Enter the appropriate values from the front panel. The programming procedures assume you know how to operate the power supply from the front panel (see "Chapter 5 - Front Panel Operation").

Order of Tests

Perform the following tests for operation verification. Test 1 must be done first, followed by Tests 2 and 3 in any order.

1Turn-on Checkout

2Voltage Programming and Readback Accuracy

3Current Programming and Readback Accuracy

Turn-on Checkout

Perform the Turn-on Checkout as directed in "Chapter 3 - Turn-on Checkout".

Note	The power supply must pass turn-on selftest before you can proceed with these tests.

Voltage Programming and Readback Accuracy

This test verifies that the voltage programming, GPIB readback, and front panel display functions are within specifications. Figure B-1 shows the setup for the tests. Measure the dc output voltage directly at the sense connections of the output terminals or bus bars. Connect the output as shown.

Table B-2. Voltage Programming and Readback Accuracy Tests

	Action	Normal Result
1	Turn off the power supply and connect a DVM across the
	sense terminals (see Figure B-1(1)).
2	Turn on the power supply with no load and program the	CV annunciator on. Output current near 0.
	output for 0 volts and maximum programmable current.
3	Record voltage readings at DVM and on front panel	Readings within Low Voltage limits (see applicable test
	display. (Subtract or add the specified readback limit to	table).
	the actual output values).
4	Program voltage to full scale.
5	Record voltage readings of DVM and on front panel	Readings within High Voltage limits (see applicable test
	display. (Subtract or add the specified readback limit to	table).
	the actual output values)

Operation Verification 107

668xA, 669xA, 667xA, 664xA, 665xA specifications

Agilent Technologies has long been a pioneer in the production of high-performance electronic test and measurement instruments, particularly in the field of power sources. Among its notable offerings are the Agilent 667xA, 669xA, 665xA, 664xA, and 668xA series of power supplies. These instruments are designed to provide stable, reliable power for a variety of applications, including electronic testing, industrial processes, and research laboratories.

The Agilent 667xA series is characterized by its programmability and advanced measurement functions. These power supplies support a wide range of output voltages and currents, allowing for flexible configurations that cater to different testing needs. The built-in measurement capabilities enable users to monitor the voltage, current, and power with high precision, which is essential for ensuring optimal performance in electronic applications.

The Agilent 669xA series stands out with its high-power outputs, making it suitable for demanding applications. These power supplies deliver high voltage and current levels, making them ideal for testing high-performance devices, such as power amplifiers and motor drives. Additionally, the 669xA series includes features such as overvoltage protection and complex output sequencing to enhance the safety and reliability of the testing process.

The Agilent 665xA and 664xA series focus on delivering high accuracy and excellent regulation. These models are particularly known for their low noise operation, which is critical for sensitive applications where precision is paramount. The integrated programming capabilities allow users to automate testing sequences, thus improving efficiency in research and development settings.

The 668xA series features advanced digital signal processing that enhances the precision and stability of the output. Users benefit from features like remote sensing and monitoring, allowing feedback adjustments that maintain output accuracy despite cable losses. Furthermore, the 668xA models can integrate seamlessly with various test environments thanks to their LAN, GPIB, and USB connectivity options.

Overall, the Agilent 667xA, 669xA, 665xA, 664xA, and 668xA power supplies provide a comprehensive range of solutions for diverse electronic testing needs. With their advanced features, superb measurement capabilities, and robust performance, these instruments empower engineers and researchers to conduct their work with confidence, precision, and efficiency.