Keithley 6517B Reference Manual

Section 10: Limits, digital I/O, and scanning Model 6517B Electrometer Reference Manual
10-2 6517B-901-01 Rev. C / August 2015
The limit test is performed after MATH operations. Unit prefixes are applied before the limit test, for
example:
 Low Limit = -10.0, High limit = 10.0. A 1.5V reading passes (PASS)
 Low Limit = -10.0, High limit = 10.0. A 0.6 M reading equals 600,000 (FAIL)
Limit set #1 is available as a multiple display, which shows a bar graph and a pass/fail indication for
the measurements. While the limits bar graph is displayed, the programmed values for limit set #1
can be viewed by pressing INFO.
The digital output lines can be programmed to reflect the results of limit tests. The first test that fails
sets a programmable digital output pattern, where the test execution order is LOW1, HIGH1, LOW2,
HIGH2. If all tests pass, another programmable pattern is set.

Keithley 6517B Specifications

General

Input Impedance	>200 TΩ
Electrometer Type	Electrometer/High Resistance Meter
Current Measurement Range	20 fA to 20 mA
Display	Vacuum Fluorescent Display
Communication Interfaces	IEEE-488 (GPIB), RS-232
Power Supply	100 V / 120 V / 220 V / 240 V; 50 Hz / 60 Hz
Resistance Measurement Range	Up to 200 TΩ