Model 602 Solid-State Electrometer Instruction Manual
2022-07-14
■INTRODUCTION
●The Keithley Model 602 Electrometer is a completely solid- state, battery operated instrument, which measures a wide range of DC voltage, current, resistance and charge. The Model 602’s input resistance of greater than 10’4R is the result of extensive instrument development with high input impedance transistors. The Model 602 has all the capabilities of conventional VTVMs, but can also make more measurements without loading circuits.
●The Model 602 has nine voltage ranges from 0.001V full scale to 10V, 28 current ranges from 10 A full scale to 0.3A, 23 linear resistance ranges from 1000 full scale to 1OtQ. and 15 charge ranges from 10 C full scale to 10 C.
●The Model 602 offers complete line isolation and excellent off-ground measuring capability. Up to 1500V may be applied between the input low terminal and the case, and stage operation is assured with the case grounded. A triaxial connector allows complete guarding of the high impedance input terminal.
●The Model 602 employs matched insulated-gate field-effect transistors followed by transistor differential amplifier stages and a complimentary-output stage. A large amount of negative feedback is used for stability and accuracy.
●The Keithley Model 602 Electrometer is a completely solid- state, battery operated instrument, which measures a wide range of DC voltage, current, resistance and charge. The Model 602’s input resistance of greater than 10’4R is the result of extensive instrument development with high input impedance transistors. The Model 602 has all the capabilities of conventional VTVMs, but can also make more measurements without loading circuits.
●The Model 602 has nine voltage ranges from 0.001V full scale to 10V, 28 current ranges from 10 A full scale to 0.3A, 23 linear resistance ranges from 1000 full scale to 1OtQ. and 15 charge ranges from 10 C full scale to 10 C.
●The Model 602 offers complete line isolation and excellent off-ground measuring capability. Up to 1500V may be applied between the input low terminal and the case, and stage operation is assured with the case grounded. A triaxial connector allows complete guarding of the high impedance input terminal.
●The Model 602 employs matched insulated-gate field-effect transistors followed by transistor differential amplifier stages and a complimentary-output stage. A large amount of negative feedback is used for stability and accuracy.
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