February 26, 2014
By DE Editors
Keithley Instruments announced the addition of two multi-channel power supplies with GPIB interfaces to its line of programmable DC power supplies. Both the Model 2220G-30-1 dual-channel and 2230G-30-1 triple-channel power supplies provide greater output accuracy, the company says.
The units’ output levels address a range of sourcing requirements for characterizing components, circuits, modules, and complete devices. The Model 2230G-30-1 power supply provides two output channels, typically used for powering analog circuits, with each channel capable of outputting up to 30V/1.5A/45W, plus a 6V/5A/30W output channel, typically used for powering digital circuits. The Model 2220G-30-1 power supply provides two output channels, each capable of outputting up to 30V/1.5A/45W. These maximum output levels, combined with voltage setting and reading resolution of 1mV and current setting and reading resolution of 1mA, allow generating a wider range of output power and reading a wider range of load currents with high precision.
Each output channel is completely isolated, which allows the new power supplies to power two isolated circuits with different reference points, eliminating the need for a second power supply. Each channel can also be turned on or off independently, so the power supplies can be used to power up a circuit that requires turning on multiple voltage levels in a specified time sequence. A programmable timer allows setting up a test to run unattended, turning off the outputs after a specified interval.
For applications that require supplying more than 30V or 1.5A, the new power supplies’ 30V outputs can be combined in a variety of configurations, such as being wired in series to produce a 60V output with a maximum current output of 1.5A or wired in parallel to produce a 3A output at 30V. When configured this way, special display modes show the actual voltage and current for the combined pair.
The combination of the new GPIB interface and an existing USB TMC-compliant device port makes it easy to control the power supplies remotely from a variety of programming environments, the company says. Standard IVI-Com and LabVIEW instrument drivers ease integration into automated test environments and provide the tools needed for basic instrument control, data logging, and analysis. This programming environment, which supports Tektronix bench instruments, can be used to automate the entire test bench or test system by providing access to the features of multiple instruments from one intuitive software interface.
For more information, visit Keithley Instruments.
Sources: Press materials received from the company and additional information gleaned from the company’s website.
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