Safety/Operational Considerations - Ossila FACT1 User Manual

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Safety/operational considerations


The Ossila Multiplexer Measurement Unit was designed to be used with Drain (Channel B)
and Gate (Channel A) currents and voltages below 100 mA and ±100 V, respectively. The
Ossila SuperFACT Control Software automatically limits both output currents and driving
voltages to comply with these limits. Due to this reason, and in order to avoid any signal
degradation, there is no safety fuse in the signal paths. If not using the Ossila SuperFACT
Control Software, ensure the Drain (Channel B) and Gate (Channel A) currents and
voltages signals are always limited to 100 mA and ±100 V, respectively. These limits should
be hard-coded in the control software so that no user can unintentionally supply/read
voltages/currents whose values are outside the operational range of the multiplexer.

If using alternative software, is the software engineer/programmer is responsible for
testing whether the application is working correctly and the SMU is operating within the
limit described above

It is also strongly recommended to include error-handling routine to make sure the
application will attempt to disarm the channel whenever an error occurs.
The multiplexer is equipped with an interlock on the top panel (figure 7). This is a safety feature that
Figure 7. Interlock on the top panel.
disconnects the probes when the lid is open.
Note No measurement can be taken unless the lid is properly closed and the interlock is disengaged.
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Interlock
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