Checking the Current Function

ENERGY HAZARD. Some supplies (Series 668xA/669xA) can provide more than 240 VA at more than 2 V. If the output connections touch, severe arcing may occur resulting in burns, ignition or welding of parts. Do not attempt to make connections while the output is live.

The tests in Table 3-2 check the basic current functions with a short connected across the power supply output. Do not program maximum output currents unless the shorting wire is capable of handling the current (see "Supplemental Characteristics" and Table 4-2). The AMPS display will show various readings. Ignore the VOLTS display.

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

Action	Display	Explanation

Turn off the power supply and connect a #14 AWG or larger wire across the output (+) and (-) terminals. If you intend to test at full-rated output current, use a wire or wires of sufficient size to carry the maximum current of the supply (see "Supplemental Characteristics" in Chapter l and Table 4-2 in Chapter 4).

Turn on the supply.

Set the voltage to its maximum value. This example assumes that you have an 8-volt supply (see "Performance Specifications" in Chapter 1 for the value for your specific supply) .

Press

Meter mode

VOLT 8.000

AMPS 1.000

Essentially zero outputs with Dis annunciator on.

Program output to 8 volts.

Program output to 1 ampere.

CAUTION: Be certain to observe this step with Series 668xA/669xA supplies. Start at 1 ampere before going to greater output currents.

Press

Press several times

Press the same number of times

AMPS 1. 000

Dis annunciator turns off, CC annunciator turns on, and AMPS display shows the programmed current.

*Current decreases several milliamperes each time you press the key.:

*Current increases several milliamperes each time you press the key.

Rotate the Current control first counterclockwise and then clockwise

Press

*The number of milliamperes is determined by the current programming resolution of the power supply (see "Supplemental Characteristics" in Chapter 1).

Control operates similarly to the and keys.

The control is rate sensitive. Turning it more quickly causes a more rapid change in current.

You have enabled the overcurrent protection circuit. The circuit then tripped because of the output short. The CC annunciator turns off and the OCP and Prot annunciators come on. The output current is near zero.

54 Turn-On Checkout

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 668xA, 665xA, 664xA, 667xA, 669xA manual Checking the Current Function

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