• InPermanently OPEN mode, the shutter will be open before, during and after any data acquisition. However if
the camera is to be left unattended for long periods, it is recommended that the shutter is closed.
• Permanently CLOSED mode can be useful for taking a series of acquisitions in darkness (background) and do
not require the shutter to open between acquisitions. The shutter remains closed before, during and after any
data acquisition.
• Fully Auto is the simplest shutter mode, as it leaves all shuttering decisions to the system. When a Take Signal
operation is performed, the shutter opens for the duration of the CCD exposure time.
• IfCLOSED for background mode is selected, any shutter driven from the shutter output of the camera will be
closed during background acquisition only.
• TheTTL (Transistor-Transistor Logic) buttons, TTL Low & TTL High, allow user to instruct the system as to how
it should control the opening and closing of the shutter i.e. open or closed status during high or low TTL states.
Note: The shutter pulse is not capable of driving a shutter. It is only a 5V pulse designed to trigger TTL & CMOS
compatible shutter drivers. The shutter pulse from the camera ca be directly connected to Andor Shamrock
spectrographs in order to control the internal shutter of these instruments, or to an Andor ACC-SD-VDM1000
external shutter driver for stand alone shutter operation.
Pre Acquisition Setup - Shutter
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