1-2 Getting Started Model 6485 and 6487 User’s Manual
Introduction
The Models 6485 and 6487 are high-resolution bus-programmable (RS-232 and IEEE-488)
picoammeters. The Models 6485 and 6487 have the following current measurement ranges:
eight ranges (from 20mA down to the 2nA range). The Model 6487 also includes a ±500V
DC voltage source and an ohms function that includes an alternating voltage mode to
improve accuracy and repeatability of very high resistance measurements.
Overview of this manual
This manual describes how to connect, program, and maintain the Models 6485 and 6487
Picoammeters. The sections of the manual are organized as follows:
– Section 1: Getting Started
– Section 2: Connections
– Section 3: Measurements and Sourcing Voltage (Model 6487 only)
– Section 4: Range, Units, Digits, Rate, and Filters
– Section 5: Relative, mX+b, m/X+b (reciprocal), and log
– Section 6: Buffer and Sweeps
– Section 7: Remote Operation and Commands
Appendices to this manual contain specification and also provide additional information
on specific topics. The appendices
are organized as follows:
– Appendix A: Specifications
– Appendix B: General Measurement Considerations
– Appendix C: Example Programs
General information
Warranty information
Warranty information is located at the front of this manual. Should your Model 6485 or
6487 require warranty service, contact the Keithley representative or authorized repair
facility in your area for further information. When returning the instrument for repair, be
sure to fill out and include the service form at the back of this manual to provide the repair
facility with the necessary information.
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