Model 2657A-LIM-3 LO Interconnect Module
Keithley Instruments, Inc.
User's Guide
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
http://www.keithley.com
PA-1063 Rev. A / March 2012
1
Description
The Model 2657A-LIM-3 LO Interconnect Module establishes measurement commons (LO and sense LO) for a test
system using multiple source-measure units (SMUs) that includes at least one Model 2657A High Power System
SourceMeter
Instrument.
Figure 1: Model 2657A-LIM-3 LO Interconnect Module
The Model 2657A-LIM-3 connects LO terminals for up to three instruments. SMUs that can be used with the
Models 2657A-LIM-3 and 2657A include:
•
Model 2611A Single-Channel System SourceMeter
Instrument
•
Model 2612A Dual-Channel System SourceMeter
Instrument
•
Model 2635A Single-Channel System SourceMeter
Instrument
•
Model 2636A Dual-Channel System SourceMeter
Instrument
•
Model 4200-SCS Semiconductor Characterization System SMUs:
•
Model 4200-SMU Medium Power Source-Measure Unit
•
Model 4210-SMU High Power Source-Measure Unit
The Model 2657A-LIM-3 creates a single-point interlock connection for SMUs connected to the interlock input
terminals. When the interlock circuit is interrupted by an open interlock switch, the outputs of all SMUs will disable.
Electrical characteristics
•
DC current carrying capability: 1.5 A maximum
•
Pulse current carrying capability: 10 A at 1% duty cycle
•
Maximum voltage between LO and chassis ground*: 3000 V
* When connecting a lower voltage source-measure unit (SMU) to the Model 2657A-PM-200 protection module, the
maximum voltage between LO and chassis ground is limited by the protection module.
Mounting Model 2657A-LIM-3 and Model 2657A-PM-200
You can mount one or two Model 2657A-PM-200 protection modules on top of the Model 2657A-LIM-3 using the
supplied hardware.
The supplied mounting bracket can be used to mount the Model 2657A-LIM-3 anywhere you want.
