User`s manual

Basic Operation & Standard Features

3-6

BASLER A600f

DRAFT

3.2.4 Controlling Exposure Start with a Software Trigger

Exposure start can be controlled by sending a software trigger command to the camera via the

1394 bus. The Trigger_Mode control register (see page 4-10) is used to enable the ability to start

image exposure with a software trigger. The Software_Trigger control register (see page 4-8) is

used to set the software trigger.

If you are triggering the camera with a software trigger, only the programmable exposure mode is

available. In programmable mode, exposure starts when the Software_Trigger control register is

set to 1. The length of the exposure is determined by the value stored in the Shutter control

Figure 3-3 illustrates programmable exposure with a software trigger.

Figure 3-3: Programmable Exposure with a Software Trigger

Enabling the Software Trigger Feature

To enable the software trigger feature:

• Set the On_Off field of the Trigger_Mode control register to 1 to enable triggering.

• Set the Trigger_Source field of the Trigger_Mode control register to 7 to select software trig-

gering.

• Set the Trigger_Mode field of the Trigger_Mode control register to 0 to select the program-

mable exposure mode.

Using the Software Trigger Feature

To use the software trigger feature, the camera must be set for continuous-shot operation. If more

precise control of exposure start time is desired, you should also monitor the Trigger Ready signal

and you must base the timing of the software trigger on the state of the Trigger Ready signal. (See

Section 3.3 for more information on the Trigger Ready signal.)

The following descriptions assume that you are using a software trigger to start exposure and that