Case of Trouble, Line Fuse | Agilent Technologies 665xA, 664xA

Table 3-2. Checking the Current Functions (Output Terminals Shorted) (continued)

	Action	Display	Explanation

Press		AMPS 0.000	Dis annunciator turns on.
Press			You have disabled the overcurrent protection circuit. The OCP
			annunciator turns off.
Press			You have cleared the overcurrent protection circuit. The Prot
(	)**		annunciator turns off.
Press		AMPS 1.000	Dis turns off and CC turns on. The output current is restored.

If you have a shorting wire of sufficient capacity, you may continue testing up to the maximum rated current of the power supply (see "Performance Specifications"). When finished, go to the next step.

Press		AMPS 0.000		Dis turns on and output current drops to zero.
	Turn off the power supply and remove the short from the output terminals.
	**		is the unlabeled blue key.

Checking the Save and Recall Functions (All Models)

The Series 668xA/669xA supplies have four nonvolatile memory storage locations (0 through 3). The supplies of all other series have five (locations 0 through 4). Proceed as follows:

■Make certain that the output is on (Dis annunciator is off).

■ Set the voltage output to 5 by pressing		.
■	Save this value to location 1 by pressing	.
■	Return the output voltage to 0 by pressing	(This step is based on the fact that a newly shipped power

supply has the *RST parameters stored in location 0 (see "Chapter 5 - Front Panel" for more information).

■Press and notice that the output voltage returns to the value stored in location 1.

Determining the GPIB Address (All Models)

When the power supply is turned on, the display shows ADDR n, where n is the power supply GPIB address. Any time you

want to see the address, press .

The display will indicate ADDR 5, which is the factory default. If the address has been changed, then a different number will appear (see “Setting the GPIB Address” in “Chapter 5 - Front Panel”).

In Case of Trouble

Line Fuse

If the power supply appears "dead" with a blank display and the fan not running, first check your power source to be certain line voltage is being supplied to the power supply. If the source is normal, the power supply line fuse may be defective. On

Turn-On Checkout 55

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.

Agilent Technologies 665xA Checking the Save and Recall Functions All Models, Case of Trouble

Models: 668xA 669xA 667xA 664xA 665xA