Keithley

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Keithley Instruments was founded by Joseph F. Keithley in Cleveland, OH, in 1946.

In 1965, they moved to Solon, OH.

The company merged with Tektronix in 2010.

Documents

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Products by Keithley

Model Class Series Description Introduced Discontinued
Keithley 160 Multimeter 3½-digit digital multimeter 1975 (?)
Keithley 175A Multimeter 4½-digit TRMS digital multimeter (?) (?)
Keithley 177 Multimeter 4½-digit TRMS digital multimeter 1978 (?)
Keithley 179 Multimeter 4½-digit TRMS digital multimeter 1978 (?)
Keithley 181 Multimeter 5½-digit nanovoltmeter (?) (?)
Keithley 182 Multimeter 6½-digit sensitive voltmeter (?) (?)
Keithley 191 Multimeter 5½-digit multimeter 1979 (?)
Keithley 192 Multimeter 6½-digit multimeter 1979 (?)
Keithley 193A Multimeter 6½-digit system multimeter 1985 (?)
Keithley 195 Multimeter 5½-digit TRMS digital multimeter (?) 1984
Keithley 195A Multimeter 5½-digit TRMS digital multimeter 1984 (?)
Keithley 196 Multimeter 6½-digit system multimeter 1986 (?)
Keithley 197 Multimeter 5½-digit digital multimeter (?) (?)
Keithley 199 Multimeter 5½-digit multimeter (?) (?)
Keithley 220 Power supply Programmable current source (?) (?)
Keithley 224 Power supply Programmable current source (?) (?)
Keithley 227 Power supply Current source 1976 (?)
Keithley 230 Power supply Programmable voltage source (?) (?)
Keithley 244 Power supply Negative HV source 1973 (?)
Keithley 263 Power supply 5½-digit calibrator / source (?) (?)
Keithley 414A Multimeter Analog picoamperemeter 1976 (?)
Keithley 480 Multimeter Digital picoamperemeter 1978 (?)
Keithley 485 Multimeter Digital picoamperemeter (?) (?)
Keithley 502 Multimeter analog milliohmmeter 1960 (?)
Keithley 580 Multimeter 5½-digit microohmmeter 1985 (?)
Keithley 600A Multimeter Electrometer (?) (?)
Keithley 602 Multimeter Electrometer (?) (?)
Keithley 610 Multimeter Electrometer 1960 (?)
Keithley 610B Multimeter Electrometer 1964 (?)
Keithley 610C Multimeter Solid-state Electrometer 1968 (?)
Keithley 614 Multimeter Electrometer 1981 (?)
Keithley 615 Multimeter Electrometer 1969 (?)
Keithley 616 Multimeter Electrometer 1975 (?)
Keithley 617 Multimeter Electrometer/Source 1984 (?)