Basler Scout - Page 151

Image Acquisition Control
Basler scout 141
Note that, if the debouncer feature is used, the debouncer setting for the input line must be added
to the exposure start delays shown in Table 14 to determine the total start delay. For example,
assume that you are using an scA640-70 camera and that you have set the cameras for hardware
triggering. Also assume that you have selected input line 1 to accept the hardware trigger signal
and that you have set the Line Debouncer Time Abs parameter for input line 1 to 5 µs. In this case:
Total Start Delay = Start Delay from Table 14+ Debouncer Setting
Total Start Delay = 33.43 µs+ 5 µs
Total Start Delay = 38.43 µs
Fig. 64: Exposure Start Controlled with an ExTrig Signal
You can calculate the frame readout time by using this formula:
Frame Readout Time = T
r
= ( (AOI Height + 1) x C
1
) + C
2
Where the values for the constants C
1
and C
2
are from the table in Section 7.13 on page 143 for all
camera models except the scA750-60 or from the table in Section 7.14 on page 148 for scA750-60
cameras.
For more information about the frame height, see Section 9.6 on page 198.
You can calculate the time to transmission end (T
e
) using these three steps:
1. Calculate the frame readout time (T
r
) using the formula above.
TrigRdy
Signal
ExTrig
Signal
Exposure
Frame
Readout
Frame
Transmission
Exposure
Frame N
Frame N+1 Readout to the Image Buffer
Frame N+1 Transmission to Host PC
Frame N Readout to the Image Buffer
Frame N Transmission to Host PC
Exposure
Frame N+1
Exposure
Frame N+2
Timing charts are not drawn to scale
Exposure Start Delay Exposure Start Delay
Frame N Time to Transmission End
Frame N+1 Time to Transmission End