User Defined 4-Wire Measure
User Defined 4-Wire Measure allows you to issue SCPI compliant commands to the Keithley meter to
create your own custom test instruction. Using these SCPI commands requires much technical ability,
practice, and patience. Refer to the Keithley SourceMeters
®
Manual for more information. See also
NPLC and Average on page 32.
User Defined Hipot
User Defined 4-Wire Measure allows you to issue SCPI compliant commands to the Keithley meter to
create your own custom hipot test instruction. The head point (lowest system point) of a net should be
chosen for the hipot source pin. Other points will be sunk to ground. Using SCPI commands requires
much technical ability, practice, and patience. Refer to the Keithley SourceMeters
®
Manual for more
information. See also NPLC and Average on page 32.
Keithley Interlock Switch
Use the Keithley Interlock Switch to restrict voltages above 42 volts by controlling the state of output. The
Interlock Switch attaches to the back of the Keithley and can either be bought or built.
The interlock is connected to pins 8 and 9. To allow voltages to reach levels above 42 volts, the switch
contacts must be closed.
• If the switch is closed, the output is allowed to go above 42 volts.
• If the tester attempts voltages above 42 volts and the interlock is open, the test will result in an
error.
Interlock Switch Open: Test fails if attempting to
reach voltages above 42 volts.
Interlock Switch Closed: the output allows the
tester to reach voltages above 42 volts.
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