Control And Data Connections; Safety Interlock Connections - Keithley 4200-SCS Reference Manual

Section 4: Connections and Configuration
See the following appendices for details on enabling and configuring prober control for supported
probers:
• Appendix G, Using a Probe Station
• Appendix H, Suss MicroTec PA-200 Prober
• Appendix I, Micromanipulator 8860 Prober
• Appendix J, Using a Manual or Fake Prober
• Appendix K, Cascade Summit-12000 Prober
• Appendix L, Signatone CM500 Prober

Control and data connections

The various control and data connections that interface the 4200-SCS to external equipment and
peripherals are covered below. Topics covered include:
•

Safety interlock connections

• IEEE-488 connections
• RS-232 connections
• Printer port connections
• LAN connections
• USB connections
Safety interlock connections
WARNING
The safety interlock feature on the 4200-SCS should be used to avoid possible shock hazards. It
provides a means by which the outputs of the 42XX-SMUs can be automatically placed in a safe
state, regardless of the state of the 4200-SCS operating software. When the safety interlock signal
is asserted (connected to +12V), all of the voltage ranges of the SMUs will be functional. However,
when the safety interlock signal is not asserted, the ±200 V supplies of the SMUs will be disabled,
limiting the nominal output to ±40 V. Under these conditions, all SMU and preamp signal terminals
will be non-hazardous. Component test fixtures and probe station dark boxes typically have a
safety switch that can be interfaced to the 4200-SCS safety interlock circuit as outlined in the
following paragraphs.
Interlock connector
Figure 4-12
NOTE
4-20
It is strongly recommended that you use the safety interlock circuit to
avoid personal injury or death caused by hazardous voltages.
shows the location of the safety interlock connector.
The 4200-TM IN and OUT terminals shown in
supported. Connecting cables to these terminals can cause unexpected system
operation.
Return to
Figure 4-12
Section Topics
Model 4200-SCS Reference Manual
are not currently
4200-901-01 Rev. S / May 2017