Model 2657A-PM-200 Protection Module
Keithley Instruments, Inc.
User's Guide
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
http://www.keithley.com
PA-1055 Rev. A / February 2012
1
Description
The Model 2657A-PM-200 Protection Module (PM) is a stand-alone module that protects certain lower-voltage
source-measure units (SMUs) that are part of a testing configuration from damage by voltage sources that are
greater than 220 V.
Figure 1: Model 2657A-PM-200
The protection module is designed for use with the following lower voltage SMUs:
•
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 (with or without the Model 4200-PA Remote
PreAmp Option)
•
Model 4210-SMU High Power Source-Measure Unit (with or without the Model 4200-PA Remote PreAmp
Option)
The protection module is intended for use in applications where a device breakdown or other potential failure could
connect the high-voltage output of the Model 2657A High Power System SourceMeter
Instrument to a lower
voltage SMU.
The Model 2657A-PM-200 does not protect the Model 2601A Single-Channel System
SourceMeter
Instrument or the Model 2602A Dual-Channel System SourceMeter
Instrument. Do
not use the protection module with these source-measure instruments.
