. The display will change from meter mode to indicate VOLTS.
. If you discover a mistake before pressing , erase the incorrect value with the backspace

Figure 5-2. Typical Power Supply Operating Curve

Programming Voltage

To program the output for 4.5 volts, proceed as follows:

■ Press

■ Press

key .

■The display will return to the meter mode and indicate 0.000 volts.

■Press to enable the output (Dis annunciator turns off). The VOLTS display will indicate 4.500 volts.

Note

The power supply must be programmed for a minimal current in order to increase the output voltage

 

beyond zero. Normally, there is sufficient idle current to do this. If the power supply does not respond or

 

the CC annunciator turns on, go to “Programming Current” and set the current to a small value.

■Now raise the voltage by pressing .Note that the voltage increases by a specific increment (depending on the voltage programming resolution) each time you press the key and increases rapidly as you hold down the key. To lower

the voltage, press .

■Try raising and lowering the voltage by rotating the Voltage control clockwise and then counterclockwise. Note how the output responds as compared to using the Entry keys.

Try to program a voltage greater than the VMAX for your supply (see "Supplemental Characteristics" for your particular model in Chapter 1). Note that the display shows OUT OF RANGE.

Programming Overvoltage Protection

Overvoltage protection guards the load against voltages that reach a specified value above the programmed output voltage.

Setting the OVP Level

Assuming that you have programmed the power supply for 4.5 volts, you can set the OVP level to 4.8 volts as follows:

■Press . The display will change from meter mode to indicate 0V, followed by the present OVP value.

■Press .

■The display will return to the meter mode and indicate the output (4.500 volts).

■Press again. The display will now indicate 0V 4 . 800.

■Press to return to the meter mode.

Front Panel Operation 89

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Agilent Technologies 668xA, 665xA, 664xA Programming Voltage, Programming Overvoltage Protection, Setting the OVP Level
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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.
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