3. Hardware
The OPTIC-4 hardware consists of a bench-top control unit, an inlet and an optional cryogenic trap
that are installed on a host gas chromatograph.
3.1 Control Unit
The control unit (Fig. 3.1) contains microprocessor, inlet temperature and gas flow control systems,
user interface, power supply’s, interfaces to the PC, GC, autosampler and auxiliary equipment, and
optional cryotrap control (OPTIC-4SC and OPTIC-4DC only).
Figure 3.1 OPTIC-4 Controller
3.2 Keypad
OPTIC-4 has a simple keypad on the front panel of the unit. Two keys, RUN/END RUN and STANDBY
are used for local control of the initialized and running methods. RUN/END RUN key allows to
override the standard procedure and run a method while it is being initialized or is in “Waiting for
Ready In” or “Waiting for Run In” state. The same key allows interrupting running method and
forcing the system to initialize it again. STANDBY key allows switching the system into the standby
state while the method is being initialized or is in “Waiting for Ready In” or “Waiting for Run In”
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