User`s manual

AW00089316000 Image Acquisition Control
Basler ace GigE 141
Note that you may have to add additional delays to the exposure start delay:
 If you use a hardware signal to trigger image acquisition, you must add a delay due to the input
line response time. Note that such delays are associated with the acquisition start trigger
signal and the frame start trigger signal.
For more information about the input line response time, see Section 5.7.3 on page 60.
 If you use the debouncer feature, you must add the delay due to the debouncer setting.
For more information about the debouncer feature, see Section 6.1.2 on page 68.
 If you have set a frame start trigger delay, you must add the delay due to the frame start trigger
delay setting.
For more information about the frame start trigger delay, see Section 7.4.3.3 on page 101.
For example, assume that you are using an acA640-100 camera and that you have set the camera
for hardware triggering. Also assume that you have selected input line 1 to accept the hardware
trigger signal, that the input line response time is 1.5 µs, that the delay due to the debouncer setting
for input line 1 is 5 µs, and that you set the frame start trigger delay to 200 µs.
In this case:
Total Start Delay =
= Exposure Start Delay (Table 13) + Input Line Response time + Debouncer Setting + Frame Start Trigger Delay
Total Start Delay = 17.62 µs + 1.5 µs + 5 µs + 200 µs = 224.12 µs
acA2500-14gm/gc 848 to 883 µs (with frame acquisitions overlapped)
848 µs (with frame acquisitions not overlapped, or in
global reset release mode)
Camera Model Exposure Start Delay
Table 13: Exposure Start Delays
FTWait
Signal
ExFSTrig
Signal
Exposure
Frame
Readout
Frame
Transmission
Exposure
Frame N
Frame N+1 Readout to the Frame Buffer
Frame N+1 Transmission to Host PC
Frame N Readout to the Frame Buffer
Frame N Transmission to Host PC
Exposure
Frame N+1
Exposure
Frame N+2
Transmission Start DelayTransmission Start Delay
Timing charts are not drawn to scale
Exposure Start Delay Exposure Start Delay
Fig. 76: Exposure Start Controlled with an ExFSTrig Signal