StrobeMode Parameter
This parameter establishes the method according to which the illumination control pulse is generated.
- For area-scan cameras, StrobeMode relates to the illumination during the frame exposure period.
- For line-scan cameras, StrobeMode relates to the illumination during the line exposure period.
Meaning |
|
NONE |
The strobe function is disabled. |
AUTO |
The strobe function is enabled with an automatic timing control feature. (available only with RG - Grabber Controlled Exposure Mode) |
MAN |
The strobe function is enabled with a manual timing control feature. (available only with RC - Camera Controlled Exposure Mode) |
OFF |
The designed StrobeLine is set to the inactive level; no more strobe pulses are issued. |
The OFF value is available only for Grablink boards. When StrobeMode is set to OFF, no strobe pulses are issued, while when StrobeMode is set to NONE, no StrobeLine is allocated to the channel.
When StrobeMode is set to NONE, the hardware line dedicated to issuing the strobe pulse is available for general-purpose usage.
When StrobeMode is set to AUTO, two cases are to be considered:
- The grabber positively controls the camera exposure function. The parameter TrueExp_us duration is reported by the grabber. Consequently, StrobeDur and StrobePos are used as specified to define the strobe pulse.
- The exposure function depends on camera settings. The strobe pulse starts upon sending the asynchronous reset pulse to the camera, and ends upon receiving the vertical validation pulse from the camera. No other strobe pulse is possible. The StrobeDur and StrobePos parameters are not used.
When StrobeMode is set to MAN, the parameters StrobeDur and StrobePos are used as specified to define the strobe pulse, using the TrueExp_us duration. However, the application is requested to write the exposure duration into TrueExp_us beforehand.
An equivalent scheme applies to line-scan operation.