working keithley 487 picoammeter, instr. manual, quick start guide & power cable

Description

If you are looking at this listing, then you know what this is and what it’s worth.
This unit is in very good, used, WORKING condition; see pics
For everyone else or if you've never heard of it before…
Features of the 487:
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Resistivity measurements (<1Ω to >1016Ω)
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± 500V source
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10fA sensitivity
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180 readings per second
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IEEE-488 interface
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Picoammeter/Voltage Source
Manufacturer's specs and general information:
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The Model 487 is designed for measurement of low currents and very high resistances.
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It is ideal for low-level DC current applications, such as:
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PMT current measurements
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mass spectrometer current measurements
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probe current measurements in electrochemistry
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plasma generated currents
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ion chamber currents
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This instrument incorporates all the capabilities of the 486, and adds a programmable ±500V source.
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This combination of picoammeter and voltage source provides a powerful high resistance meter and fast picoammeter in one instrument.
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The 487 makes current measurements from 10fA to 2mA.
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Two voltage source ranges are available: a 500V range with 10mV resolution and a 50V range with 1mV resolution.
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A PRESET button allows the user to toggle between two separate source values.
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The 487 sources up to 500V, measures the current with 10fA sensitivity, and then instantly calculates the resistance value, from 500mΩ to 5 × 1016Ω.
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The unit displays either current or resistance. Reading intervals from 10ms to 1000s can be programmed, simplifying tests that require a predetermined “soak” time.
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Two displays, one for current readings and one for voltage sourcing, permit the voltage setting and the measured current to be viewed throughout the measurement.
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The Model 487 is one of the most effective test instruments for performing such tasks as resistivity, I-V measurements, component leakage, and insulation resistance.
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A common test procedure, written by the American Society of Testing and Materials, D257: D-C RESISTANCE OR CONDUCTANCE OF INSULATING MATERIALS, is easily performed with the 487.
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