Keithley 6487 Reference Manual

2
Measurement Concepts
and Connections
• Connection fundamentals — Covers fundamental information about connecting
test circuits to the picoammeter.
• Basic connections to DUT — Details connecting test circuits to the picoammeter
for both current and ohms measurements.
• Using a test fixture — Discusses using general test fixtures as well as the
Model 8009 test fixture.
• Interlock — Covers interlock connections and operation.
• Analog output — Covers analog output connections and discusses considerations
when using the analog output.
• Measurement considerations — Summarizes considerations that could affect
overall measurement accuracy.

Keithley 6487 Specifications

General

Type	Picoammeter/Voltage Source
Current Measurement Range	20 fA to 20 mA
Interfaces	GPIB, RS-232
Voltage Burden	< 200 µV
Input Impedance	>10^14 Ω
Power	100 V / 120 V / 220 V / 240 V
Basic Current Measurement Accuracy	0.4%