Changing the Port Configuration

As shipped from the factory, the digital port is configured for FLT/INH operation. You can change the configuration of the port to operate as a general-purpose digital input/output port to control your custom circuitry as shown in Figure D-4. To change the port configuration, you must move a jumper on the GPIB board.

Shock Hazard. Hazardous voltage can remain inside the power supply even after it has been turned off. This procedure should only be done by qualified electronics service personnel.

Proceed as follows:

1.Turn off the power supply and disconnect the power cord from the power source or turn off the power disconnect switch (Series 668xA/669xA).

2.Remove the four screws that secure the two carrying straps and outer cover.

3.Spread the bottom rear of the cover and pull it back to disengage it from the front panel.

4.Slide the outer cover back to expose the top of the GPIB board.

5.Refer to Figure D-4 and use needle-nose pliers to move the jumper to the Digital I/O position.

6.Replace the outer cover, and secure the carrying straps.

7.Make the necessary wire connections to the digital connector.

Digital I/O Operation

The digital port can be configured (see Figure D-4) to provide a digital input/output to be used with custom digital interface circuits or relay circuits. Some examples are shown Figure D-5. See Figure D-1 for the pin assignments of the mating plug and Table 1-5 for the electrical characteristics of the port. See DIG:DATA[:VAL] in “Chapter 3 - Language Dictionary" of the Programming Guide for information on programming the port. The digital port pins are as follows:

OUT 0 (pin 1)

This port can only be used as an open-collector output. It is assigned a bit weight of 1.

OUT 1 (pin 2)

This port can only be used as an open-collector output. It is assigned a bit weight of 2.

IN/OUT 2 (pin 3)

This port can be programmed to be either a high impedance input or an open-collector output.

Common (pin 4)

This pin is the common connection for the Digital I/O ports.

Figure D-5. Digital l/O Port Applications

126 Digital Port Functions

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Agilent Technologies 664xA, 665xA, 667xA Changing the Port Configuration, Digital I/O Operation, IN/OUT 2 pin, Common pin
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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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