Camera Cycle Concatenation Rules
This topic explains the rules that MUST be observed by the frame grabber to avoid Camera Trigger overrun when requesting successive camera cycles to an asynchronous reset camera.
Rule for cameras not allowing overlapping |
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The next camera cycle may NOT begin before the completion of the readout phase. |
The following diagram illustrates the shortest possible cycle period achievable by cameras NOT allowing the cycle overlapping:
The minimum cycle period is: Min Cycle Periodn = EXPn + RDOn
Rules for cameras allowing overlapping |
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The exposure phases of two consecutive camera cycles may NEVER overlap. |
The readout phases of two consecutive camera cycles may NEVER overlap |
The following diagrams illustrate the shortest possible cycle period achievable by cameras allowing cycle overlapping:
In the first case:
- The duration of the exposure phase of the 2nd cycle is shorter than the duration of the readout phase of the first cycle.
- The next camera cycle may start (EXPn+1 - RDOn) period of time after the completion of the exposure phase.
- The minimum cycle period is Min Cycle Periodn = EXPn + RDOn - EXPn+1
In the second case:
- The duration of the exposure phase of the 2nd cycle is longer than the duration of the readout phase of the first cycle.
- The next camera cycle may start immediately after the completion of the exposure phase.
- The minimum cycle period is: Min Cycle Periodn = EXPn