Load Connection
B Connect for remote sensing (optional)

Connecting Supplies in Auto-Parallel

Note

Refer to Appendix F for more information about auto-parallel operation.

Auto-Parallel Wiring (Figure 4-5e).Figure 4-5e shows how power supplies can be auto-paralleled for increased current output. Up to three supplies can be connected for auto-parallel operation. Use heavy enough load leads so that the absolute voltage difference between the ⊕ output terminals of the "master" supply and the ⊕ output terminal of the first "slave" supply is kept under 2 V at rated current. This also applies to the voltage difference between the ⊕ output terminals of the first and second "slave" supplies. If remote sensing is necessary, connect the remote sense terminals of the "master" supply as shown by the dashed lines in Figure 4-5e. See "Remote Voltage Sensing" for more information.

Auto-Parallel Programming. Program only the output current of the first ("master") supply in the series; the "slave" supplies automatically track the master's output. Program the output current of the slave supplies to zero. However, the voltage and OVP settings of the slave supplies must be set higher than the operating voltage of the master supply. This ensures that the slave supplies will operate in CC mode when tracking the output of the master supply. Be sure to set the output current of the slave supplies to zero, because all current programming inputs (GPIB, front panel, and external voltage) are additive. Functions such as status, voltage readback, and current readback can still be read back individually for each supply.

If a "slave" supply experiences a desired shutdown condition (such as caused by overtemperature or overcurrent), it does not automatically shut down all other supplies. You must first enable remote inhibit (RI) and discrete fault indicator (DFI) operation. It is recommended that you use the RI and DFI functions to automatically shut down all supplies whenever one supply experiences a shutdown condition. See "Fault/Inhibit Operation" in "Appendix D - Digital Port Functions" for wiring information and "Questionable Status Group" in the "Programming Guide" for programming information.

Analog ConnectorSlave SupplyMaster Supply

Program only the master. Set slave output and OVP voltage slightly higher than the master to ensure that slave stays in CC mode

Load

A Only local sensing permitted

Figure 4-5e. Series 668xA and 669xA Auto-Parallel Connection (Remote Sensing Optional)

80 User Connections

Page 79 Page 81
Page 80
Image 80
Agilent Technologies 665xA, 664xA, 667xA, 669xA, 668xA manual Connecting Supplies in Auto-Parallel
Page 79 Page 81

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.
Top Page Image Contents