Version 2.1 rev 13 Feb 2017
control of Shutter via external ttl Signal
For exibility, the shutter in Shamrock spectrographs may also be operated by an external TTL signal. This allows
the shutter to be operated by, and synchronised to, other laboratory equipment e.g. an Andor camera. The shutter
connector is a standard female BNC type and is located at the front of the spectrograph below the ange mount.
Figure 12: Shutter Connection (shown for a Shamrock 750)
4.8.1.1
external control of the Shutter
• For correct shutter operation using an external device, ensure that the shutter mode is set to CLOSED in the
software interface.
• If the shutter control is returned to the software interface it is necessary to either set the external signal to TTL
LOW, or disconnect the cable. Failure to do so will mean that the shutter will remain in the open state and will
not open and close as desired.
Shutter
Connector
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