Compact linear power supplies interface to wide range of applications

GPIB (IEEE-488) remains the most widely used interface for instrument systems. However, LAN-based systems are becoming increasingly popular because of their simple and low-cost cabling and the elimination of the need for a dedicated controller interface.

LXI (LAN extensions for Instrumentation) is the LAN-based equivalent to GPIB, combining the advantages of Ethernet with the simplicity and familiarity of GPIB. The PL-P(G) Series conform with LXI 1.2 (category C) and include a built-in web server which provides information, configuration and control via a web browser.

The interfaces provide full control and readback with a setting resolution of 1 mV or 0.01 mA. Near-perfect load regulation can be achieved using the remote sense terminals which, like the output terminals, are fitted to both the front and the rear of the power supply.

The command set is compatible with other TTi power supplies including the QL and the original PL-P Series. An IVI driver provides support for common high-level applications such as National Instruments LabView or LabWindows, and HP/Agilent VEE.

The analogue interface enables the power supplies to be used in linear feedback systems as well as enabling automatic tracking of multiple units connected in parallel. The power supplies are linear regulated and offer very low output noise combined with excellent dynamic response. They are extremely compact, being only 1/4 rack width (107 mm) and 3U height (131 mm). Four units can therefore be fitted into a single rack width.

High thermal efficiency enables an unusually high power density to be achieved for a linear power supply. Single-output models provide up to 90 W, and dual-output units 180 W. Models are currently available with voltage ranges of 0-15 V, 0-30 V and 0-60 V.