User`s guide

SHUTTER CONTROL
SDK SECTION 7
Page 62
Figure 9: Timing diagram for shutter and fire pulses in internal trigger mode
Figure 10: Timing diagram for shutter and fire pulses in external trigger mode
NOTES:
1. In the case of external triggering, the external trigger pulse, the shutter pulse and the fire
pulse are all coincident. If you are using a shutter and externally triggering the Andor
system then the external trigger must be pulsed early enough to ensure that the shutter is
fully opened before the light pulse arrives. Please consult the documentation supplied by
the shutter manufacturer to get an indication of the transfer time you can expect from your
particular shutter.
2. If you do not have a shutter connected, set the Closing Time and Opening Time parameters
to 0. Setting these parameters to any other value will insert extra delays into cycle time
calculations.