User`s manual

46  Operational Reference Genie Monochrome Series-GigE Vision Camera
Free-running Programmable Exposure Timing
External Trigger Programmable Exposure
 Also known as “Edge Pre-select” exposure. See the timing diagram below.
 The external trigger edge initiates the exposure process. The active external trigger edge can be selected as
either the low-high or high-low transition.
 The delay from active trigger edge to start of exposure is programmable from 1μs to 16 seconds (1μs steps) .
 Exposure duration is programmable from the sensor minimum (see Genie Sensor Overview) to 16 seconds (1μs
steps).
 Support
s "Synchronous Mode" on page 50 t
iming for fastest possible frame rates. Start of exposure is aligned
on the next horizontal line while exposure duration granularity is 1µs. Exposure and sensor readout can be
concurrent.
 Supports "Reset Mode" on page 51 t
iming. Exposure granularity is 1µs. Exposure and sensor readout must be
sequential, limiting the maximal frame rate.
 Any external trigger received before the previous exposure is complete is ignored. An application can elect to
receive messages about ignored triggers. See "Events" on page 69.