Test Fixture and Interlock
The voltage source of the Model 487 is designed to be
used with a test fixture that incorporates a safety interlock
switch, such as the Keithley Models 8002A High Resis-
tance Test Fixture. By using the interlock feature, the
Model 487 cannot source voltage when the lid of the test
fixture is open or ajar.
Adjusting V-Source Level
The rotary knob and the4 and, keys are used to adjust
the V-Source level and select range.
WARNING
With the instrument in operate (OPER-
ATE indicator on), the displayed voltage
level (possibly hazardous) will be ap
plied to the output terminals of the V-
Source. The V-Source should be kept in
standby until ready to safely source
voltage to a load.
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