To keep users safe, always read and follow all safety warnings
provided with each of the instruments in your system.
Install the instrument
The 4200A-SCS can be used on a bench or in a rack. See
the instructions that came with your rack-mount kit if you are
installing the 4200A-SCS in a rack.
Wiring the interlock
If you need voltages greater than ±40 V for testing, you
must add an interlock switch to the xture. This ensures
that hazardous voltages are not present when the exterior
enclosure of the xture is open. It also enables the
4200A-SCS to output higher voltages when the exterior
enclosure of the xture is closed.
When the safety interlock signal is asserted (the switch is
closed and the signal is connected to +12 V), all the voltage
ranges of the SMUs are functional. When the safety interlock
signal is not asserted (the switch is open), the 200 V range
on the SMUs is disabled, limiting the nominal output to
±40 V.
If you need voltages greater than ±40 V, you must also
connect the exterior of the test xture enclosure to protective
earth (safety ground). Take care to ensure that the wiring
(FORCE, GUARD, and SENSE) in the xture does not
electrically contact the exterior of the enclosure.
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