Andor Technology Zyla sCMOS 4.2 PLUS - 2.6 Trigger Modes; Internal Trigger; External Trigger; Software Trigger

version 2.0 rev 18 Feb 2021
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2.6 Trigger Modes
The Zyla camera has the following triggering modes:
• Internal Trigger - the camera determines the exact time when an exposure happens based on the
acquisition settings entered by the user. This is the most basic trigger mode and requires no external
intervention.
• External Trigger - the camera and software are in a high state of readiness to accept a trigger from
an external source. Refer to Table 9 for the minimum pulse width required to guarantee a trigger. The
external trigger is fed via the External Trigger input on the I/O Connector on the camera head.
• Software Trigger works in the a similar manner to External Trigger mode whereby the camera and
software are in a high state of readiness and can react extremely quickly to a trigger event issued via
software. This mode is particularly useful when the user needs to control other equipment between
each exposure and does not know in advance how long such control will take or if the time taken
changes randomly.
• External Start is a mode where the camera will wait for one external trigger event to occur after the
acquisition sequence has been started. Once this external trigger event is detected, the camera will
start the Internal Trigger read out process and will progress as if the camera was in internal trigger
mode.
• External Exposure Trigger is a mode of operation where the exposure time and cycle time are
controlled by the external trigger input.
TheTTLinputsandoutputsmaybeusedtosynchronizethecameraoperationwithexternaleventsor
equipment.
The individual outputs are described in Sections 2.6.2 and 2.6.3.
TheAUX_OUT_1outputcanbeconguredviasoftware(SolisorSDK)toprovideoneofthefollowingoutputs:
FIRE, FIRE n, FIRE ALL, or FIRE ANY.
The default state provides ‘FIRE ALL on this output.
The polarity of the TTL inputs and outputs can also be inverted (individually) via either Solis or SDK.
NOTE:‘Row1’istherstrowreadoutintheimageframe.‘Rown’isthelastrowreadoutintheimageframe.
NOTE: The trigger diagrams in the following sections are for outlining the events and timing of outputs in the
various trigger modes and not to scale.