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System Options: External Current Measurement (Keithley Picoamper Meter)
External Current Measurement (Keithley Picoamper Meter)
When the Stage menu / External Current Measurement is ticked, it is
expected to have Keithley picoamper meter connected to the External
Connectors panel / Specimen Current connector, which is located at
the back side of the microscope console.
FIGURE 7-5
EXTERNAL CONNECTORS PANEL
In this case the Status module / Speciment current value is N/A and
the meter readout shows actual speciment current.
Note: 
When the Stage menu / External Current Measurement is not ticked,
switch the picoamper meter off or disconnect it!
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7-7