Basic Operation & Standard Features
BASLER A102
f
3-9
DRAFT
Level Controlled Exposure Mode
When level controlled mode is selected, the length of the exposure will be determined by the
ExTrig signal alone. If the camera is set for rising edge triggering, exposure begins when the
ExTrig signal rises and continues until the ExTrig signal falls. If the camera is set for falling edge
triggering, exposure begins when the ExTrig signal falls and continues until the ExTrig signal rises.
Figure 3-5 illustrates level controlled exposure with the camera set for rising edge triggering.
Figure 3-5: Level Controlled Exposure with Rising Edge Triggering
Enabling the External Trigger Feature
To enable the external trigger feature:
• Set the On/Off field of the Trigger Mode control register to 1 to enable triggering.
• Set the Trigger Polarity field of the Trigger Mode control register to 0 to select falling edge
triggering or 1 to select rising edge triggering.
• Set the Trigger Mode field of the Trigger Mode control register to 0 to select the programma-
ble exposure mode or 1 to select the level controlled exposure mode.
• Set the Trigger Source field in the Trigger Mode control register to select which one of the
four physical input ports on the camera will be used to receive the external trigger signal:
- Set the Trigger Source field to 0 to select physical input port 0 to receive the ExTrig signal.
- Set the Trigger Source field to 1 to select physical input port 1 to receive the ExTrig signal.
- Set the Trigger Source field to 2 to select physical input port 2 to receive the ExTrig signal.
- Set the Trigger Source field to 3 to select physical input port 3 to receive the ExTrig signal.
The default setting is for physical input port 0 to receive the ExTrig signal. Refer to Sections
2.5.1
and
2.5.2
for a description of the physical and electrical characteristics of the physical input ports.
L
The Trigger Source field in the Trigger Mode register is defined in version 1.31 of the
IIDC specification.
Because the Trigger Source feature is so new, the Basler BCAM 1394 Driver does not
yet include a method call to access this feature. As a work-around, you can use the
techniques described in the tutorial for the Basler Smart Features Framework Soft-
ware to directly read from or write to the Trigger Source field. The Smart Features
Framework Software is available on the Basler web site. To download the software go
to:
http://www.baslerweb.com/popups/popup_en_1825.php
Summary of Contents for A102f
Page 1: ...USER S MANUAL Document Number DA00063006 Release Date 7 December 2010 ...
Page 4: ......
Page 25: ...Basic Operation Standard Features BASLER A102f 3 3 DRAFT Figure 3 2 Block Diagram ...
Page 62: ...Basic Operation Standard Features 3 40 BASLER A102f DRAFT ...
Page 166: ...Mechanical Considerations 7 6 BASLER A102f DRAFT ...
