Keithley, a Tektronix company, is pleased to introduce the Model 2231A-30-3 Triple Channel 
DC Power Supply. The Model 2231A-30-3 is an affordable power supply targeted to the 
education market. Combined with the entry-level scope line, entry-level function generator, and 
5 ½ digit DMM, the Model 2231A -30-3 power supply completes the basic equipment set for a 
competitively priced instrumentation package for an electrical engineering student lab station.

Model 2231A-30-3 Product Overview
♦ More power than typical three output power supplies - 195W total power -
   ►Two channels with maximum output of 30V and 3A (90W)
   ► One channel with maximum output of 5V and 3A (15W)
♦ Excellent performance
   ► Fully isolated channels – Maximum flexibility to test devices with analog circuits 
that are on different grounds
   ► 0.06% basic voltage and 0.2% basic current readback measurement accuracy
   ► Linear regulation with <5mVp-p ripple and noise
♦ Outstanding convenience
   ► Display shows voltage and current for all 3 channels simultaneously
   ► Numeric Keypad for fast entry and Rotary Knob for step change
   ► Serial and parallel connection of the 30V channels with the instrument managing 
the channels and displaying the total output
   ► Output timer function (range 1~99999.9S) to independently turn on and turn off 
channels at specific times or in a specific sequence
♦ Programmability
   ► Optional USB interface