Keithley 2701e 2750e digital multimeter integra series keithley 2750e the keithley 2750e is a digital multimeter from the integra series the 2750e can combine dc power supply precision measurement switching and control in a single tightly integrated enclosure for either rack mounted or bench top applications this cost effective high performance test platform offers an affordable alternative to separate digital multimeters and switch systems dataloggersrecorders plug in card d