Flash Trigger Signal; Setting The Flash Trigger Signal - Basler A400K User Manual

Camera Interface

2.5.8 Flash Trigger Signal

A400k cameras output a flash trigger signal that can be used to trigger a flash exposure. The flash
trigger output connector is described in Section 2.1.4.
The flash trigger signal can be programmed to operate in five different modes:
• The signal is always low, that is, deactivated.
• The signal is always high.
• The signal is high as long as the sensor's flash window is open, that is, all pixel lines are
exposed to light. The signal goes high when exposure starts in the last pixel line of the area
of interest and the signal goes low when exposure ends in the first pixel line.
• The signal is low as long as the sensor's flash window is open, that is, all pixel lines are
exposed to light. The signal goes low when exposure starts in the last pixel line of the area of
interest and the signal goes high when exposure ends in the first pixel line.
• The signal is tied to the ExFlash input signal provided by the frame grabber and the signal is
high while the ExFlash signal from the frame grabber is high.
• The signal is tied to the ExFlash input signal provided by the frame grabber and the signal is
low while the ExFlash signal from the frame grabber is high.
In addition, four switching options are programmable:
• TTL
• Open collector or Low Side Switch, 5 V max
• High Side Switch 5 V
• High Impedance
The switching options are explained on page 2-5.
If the exposure time setting on the camera is lower than the minimum flash exposure
required (see page 3-9), no flash trigger signal will be output.

2.5.8.1 Setting the Flash Trigger Signal

You can set the flash trigger signal using either the Camera Configuration Tool Plus (CCT+) or
binary commands.
With the CCT+
With the CCT+ (see Section 4.1), you use the settings in the Flash Trigger parameter group.
By Setting CSRs
You can program the flash trigger signal by writing a value to the Mode field of the Flash Trigger
Output Mode CSR and Flash Trigger Switching Mode CSR (see page 4-31).
See Section 4.2.2
write commands.
2-32
DRAFT
for an explanation of CSRs. See Section 4.3.1 for an explanation of using read/
Basler A400k