Keithley 6430

4 Ohms Measurements
Ohms configuration menu .......................................................... 4-2
Ohms measurement methods ..................................................... 4-3
Selecting ohms measurement method ................................. 4-4
Auto ohms measurements ................................................... 4-4
Manual ohms measurements ............................................... 4-5
Ohms sensing ............................................................................. 4-6
Offset-compensated ohms .......................................................... 4-7
Measuring high resistance devices ...................................... 4-7
Enabling/disabling offset-compensated ohms .................... 4-8
Offset-compensated ohms procedure .................................. 4-8
Ohms source readback ............................................................... 4-9
6-wire ohms measurements ........................................................ 4-9
Remote ohms programming ..................................................... 4-10
Remote ohms commands .................................................. 4-10
Ohms programming example ............................................ 4-10
5 Source-Measure Concepts
Compliance limit ........................................................................ 5-2
Types of compliance ........................................................... 5-2
Maximum compliance values ............................................. 5-3
Compliance examples ......................................................... 5-3
Compliance principles ........................................................ 5-4
Determining compliance limit ............................................ 5-4
Overheating protection ............................................................... 5-5
Source-delay-measure cycle ....................................................... 5-6
Sweep waveforms ............................................................... 5-8
Operating boundaries ................................................................. 5-9
Source or sink ..................................................................... 5-9
I -Source operating boundaries ......................................... 5-10
V-Source operating boundaries ......................................... 5-14
Source I measure I and source V measure V .................... 5-18
Basic circuit configurations ...................................................... 5-18
Source I ............................................................................. 5-18
Source V ............................................................................ 5-20
Measure only (V or I) ....................................................... 5-21
Guard ........................................................................................ 5-22
Cable guard ....................................................................... 5-22
Ohms guard ....................................................................... 5-24
Guard sense ....................................................................... 5-24
Data flow .................................................................................. 5-26
Buffer considerations ........................................................ 5-28