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Warning: Do NOT apply currents to a SMU that are greater than the maximum current of the range
6.3 Voltmeter (Vsense1 and Vsense2)
The Ossila Source Measure Unit has two additional voltage measurement channels marked as Vsense1 and
Vsense2. They are designed to accurately detect small voltages while simultaneously having a wide dynamic
range of ±10 V. Table 6.5 lists the specifications of these additional channels.
Note: the Vsense module shares a ground plane with the SMU module of the same number (i.e.
Vsense 1 shares a ground plane with SMU 1) and hence is not isolated.
OSR
1 to 4
5 to 9
6.4 Measurement Non-Linearity
The non-linearity in the measurement of the Ossila Source Measure Unit is kept well below the
measurement accuracy of every range. Such non-linearity is common due to different amplification stages
and analogue digital conversion processes.
6.5 Shutter/Trigger
The Shutter/Trigger can be used either as an input or an output. It can be used to send a trigger signal to
other instruments or configured to wait for a trigger from other instruments. The voltage level of the Shutter/
Trigger is 5 volts and can source and sink up to 30 mA of current; higher currents may result in damage to
the unit.
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that is active, as this may result in damage to the unit.
Table 6.5. Voltmeter specifications.
Range
Accuracy
1 to 5
1 to 5
± 10 mV
± 10 mV
Noise
100 μV
50 μV
Resolution
1.0E-4
1.0E-5
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