ALLIED Vision Technologies Manta G-917 - Manual (Page 116)

Manta Technical Manual V7.0.1
116
Camera interfaces
Trigger rules
• The end of exposure will always trigger the next Readout.
• The end of exposure must always end after the current Readout.
• The start of exposure must always correspond with the Interline Time if
Readout is true.
• Exposure start delay equals the Readout time minus the Registered Expo-
sure Time.
Triggering during the Idle State
For applications requiring the shortest possible trigger Latency and the small-
est possible trigger jitter the User trigger signal should be applied when Imag-
ing is false and Idle is true.
Exposure High when the camera image sensor is integrating
light.
Readout High when the camera image sensor is reading out
data.
Trigger latency Time delay between the user trigger and the start
of exposure
Trigger jitter Error in the trigger latency time
Trigger ready Indicates to the user that the camera will accept
the next trigger.
Registered exposure time Exposure time value currently stored in the camera
memory.
Exposure start delay Registered Exposure Time subtracted from the
Readout time and indicates when the next expo-
sure cycle can begin such that the exposure will
end after the current Readout.
Interline time Time between sensor row readout cycles.
Imaging High when the camera image sensor is either
exposing and/or reading out data.
Idle High if the camera image sensor is not exposing
and/or reading out data.
Note

The user trigger pulse width should be at least three times the
width of the trigger latency as indicated in
Specifications on
page 24.
Term Definition
Table 40: Trigger definitions