Used Keysight / Agilent N7909A Advanced Power System-Power Dissipater Unit, 1000W

Product Highlights

Adding an N7909A power dissipater unit to any Advanced Power System N6900A or N7900A supply extends its ability to sink current from 10% to 100% of its rated current.

The N7909A power dissipater unit adds current sinking or two-quadrant operation to any Advanced Power System (APS) N6900A or N7900A power supply. Each N7909A provides up to 1 kW of current sinking capability to an APS power supply, so you will need two N7909As to achieve full two-quadrant operation of a 2-kW APS supply. You can use a single N7909A unit with a 2-kW APS power supply to achieve 50% current sinking capability. The N7909A form factor is 1U and full rack width. N7909A connects to an APS power supply via a two-wire power connection and a communication connection to provide continuous two-quadrant operation. The connections are located on the rear panel of both the N7909A and the supply.

Note that the N7909A does not operate as a standalone instrument. It only works with an APS power supply. Additional information on the APS's 2-quadrant operation:

• The APS provides programmable +/- current waveform capability to fully utilize the two-quadrant operation
• The APS provides +/- current limit settings to ensure your device is operated in its allowable range
• By default, the APS's current sink capability will perform down programming for pulling down voltage levels when it is connected to loads with stored energy, for instance loads with a large amount of parallel capacitance at their input.
• All these capabilities are also available when you use a standalone APS power supply's 10% rated output current sinking capability without the N7909A power dissipater unit

Dynamic Power, Dynamic Measurements, Higher Accuracy

The Keysight Advanced Power System (APS) N7900 Series is a full-featured supply designed for automated test equipment (ATE) applications that benefit from high-speed dynamic sourcing and measurement. The highly integrated N7900 enables you to accelerate your test-system throughput with industry-leading speed and precision measurements. The APS N7900 has all the capabilities of the N6900 but also includes dynamic output power, dynamic measurements, and higher accuracy. While standard on the N7900, high accuracy, dynamic sourcing, and power are available as separate options on the N6900.

• Improves on Keysight N6900 accuracy, including a second seamless current range
• Measurement enhancements over the N6900, improved voltage and current data logger
• Deploy N7900 supplies in parallel to deliver up to 10 kW

• Dynamic outputs, arbitrary waveforms, list capability, and 6x improvement in up/down programming time
• Add full, 2-quadrant operation to any APS power supply with the N7909A APS power dissipater unit
• Versatile I/O, LAN (LXI Core), USB and GPIB