User`s manual

Preliminary
Genie Monochrome Series-GigE Vision Camera Operational Reference • 43
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 4 seconds
(1μs steps) .
• Exposure duration is programmable from 100μs to 4 seconds (1μs steps).
• Supports
Synchronous Mode timing 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 timing. 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 62.