VISCAM 1000 Systems
26
System Set-Up
-
Internal Flash Auto Intensity Minimum: the lowest light level the ALC/ADR will set the Internal Flash
Intensity.
-
Internal Flash Auto Intensity Maximum: the highest light level the ALC/ADR will set the Internal Flash
Intensity.
-
Internal Flash Auto Intensity Knee Point 1 and Knee Point 2: have units in Light Sensor (LS A-Side from ALC
or ADR). Intensity is equal to
o
If LS value < Knee Point 1 then intensity equals Intensity Minimum
o
If LS value > Knee Point 2 then intensity equals Intensity Maximum
o
Otherwise intensity equals
(
)(
)
+
4.9
Trigger Mode Selection
The VISCAM 1000 system offers several trigger sources. They can all work independently, but can all be
selected in parallel:
•
TTL Trigger
•
Serial Trigger (NOT USED – CANNOT BE SELECTED)
•
Ethernet Trigger
•
Vehicle Detector
The selection is in the Trigger control panel in the Properties window for the camera:
4.9.1
Trigger Synchronization Mode Selection
In addition to the selection of External Trigger Source, there is also the selection of Trigger Sync Mode where
the capture rate (frames per second) of the sensor can be controlled. The maximum allowed shutter time
varies, depending on the rate selected as shown in the list below:
1.
Internal 50 fps – 3 ms maximum shutter length
2.
Internal 60 fps – 3.5 ms maximum shutter length
3.
Internal 72 fps (default selection) – 1 ms maximum shutter length
4.
External 50 fps – 3 ms maximum shutter length
5.
External 60 fps – 3.5 ms maximum shutter length
6.
External 72 fps – 3 ms maximum shutter length
As seen in the above list, the camera’s continuous frame rate can either be set to 50, 60 or 72 frames per
second and the camera will actually be capturing images continuously in order for the built-in Vehicle
Detector, as well as the ALC (Automatic Level Control) to work – even if no vehicles are present and no triggers
are sent to the camera.
