- February 19, 2014
- Keithley Instruments
February 19, 2014 – Keithley Instruments announced Model 2220G-30-1 dual-channel and 2230G-30-1 triple-channel power supplies with GPIB interfaces. The power supplies enhance ease of use in circuit design, university student labs, materials research, and device testing that requires the use of more than one power source. Their output levels address a wide range of sourcing requirements for characterizing components, circuits, modules, and complete devices.
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.
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 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 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 power supplies also allow configuring the 30V outputs to test a bipolar circuit or maintain a user-defined ratio between the two outputs when using Tracking mode. Several features help protect fragile or experimental DUTs from damage during testing, including programmable voltage maximum values that prevent the accidental entry of a channel’s voltage above the pre-set value. These settings are in addition to the current limit setting function, which controls the level of current that can flow into the DUT, and each output channel’s limit can be set independently. In addition, all front panel controls can be locked using a user-definable password to prevent inadvertent changes during critical tests. 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. Standard IVI-Com and LabVIEW instrument drivers ease integration into automated test environments and provide all the tools needed for basic instrument control, data logging, and analysis. This programming environment, which supports a wide range of 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. Several features enhance the operating versatility and simplify operation of the new power supplies:
- Instrument settings can be stored in one of 30 internal memory locations to save time when conducting repetitive tests.
- A rotary knob with adjustable step size simplifies studying a DUT’s response to voltage or current changes. A numeric keypad offers an alternative method of entering values precisely.
- Voltage and current outputs for all channels are displayed simultaneously on the bright vacuum fluorescent display, eliminating the need to switch manually between channel displays.
Pricing
- Model 2220G-30-1 Dual-Channel DC Power Supply: $1,064
- Model 2230G-30-1 Triple-Channel DC Power Supply: $1,270
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