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Make sure all connections are behind a locked cabinet door or
other barrier. This protects the system operator from accidentally
removing a connection by hand and exposing hazardous voltages.
Use high-reliability fail-safe interlock switches to disconnect
power sources when a test fixture cover is opened.
Where possible, use automatic handlers so operators are not
required to access the DUT or other potentially hazardous areas.
Provide training to all users of the system so they understand all
potential hazards and know how to protect themselves from
injury.
In many systems, during power up, the outputs may be in an
unknown state until they are properly initialized. Make sure the
design can tolerate this situation without causing operator injury
or hardware damage.
To keep users safe, always read and follow all safety warnings
provided with each of the instruments in your system.
Install the instrument
The Model 4200-SCS can be used on a bench or in a rack. Please see
the instructions that came with your rack-mount kit if you are
installing the Model 4200-SCS in a rack.
Wiring the interlock
The Model 4200-SCS is provided with an interlock circuit that
must be positively activated for the high voltage output to be
enabled. The interlock facilitates safe operation of the equipment
in a test system. Bypassing the interlock could expose the
operator to hazardous voltages that could result in personal
injury or death.
Asserting the interlock allows the SMU and preamp terminals to
become hazardous. SMU and preamp terminals should be
considered hazardous even if the outputs are programmed to be
low voltage. Precautions must be taken to prevent a shock
hazard by surrounding the test device and any unprotected
leads (wiring) with double insulation for 250 volts, Category I.
See EN61010-1 safety standards for details.
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