Dalsa 1M28-SA User Manual page 21

1M28, 1M75, and 1M150 User's Manual
condition, the readout speed of the sensor increases linearly with the decrease in the number of
pixels in a row. Table 5 provides an overview of the increase in image data rate with decrease in
size of the ROI. Figure 14: ROI Examples with Line Address Pre-Load shows examples of various
readout regions. The ROI is defined via registers 24 to 31 and can be set using the 1MXXX camera
family PFRemote software. See chapter 3 for a full explanation of the PFRemote.
Note: You can remove ROI placement restrictions by deactivating the pre-load of line addresses.
This is achieved by deactivating bit 5 of mode register 3 (address 0DH), i.e. set EN_PRELOAD =
0, and also setting the line pause register address 20H to a safe value greater than 32.
Table 5: Max Frame Rate versus Resolution (Exposure Time = 10µs)
ROI Dimension (col x line) 1M28
512 x 512
256 x 256
128 x 128
128 x 16
1024 x 1
Figure 14: ROI Examples with Line Address Pre-Load
(0,0)
(0,0)
DALSA
PRELIMINARY
105 fps
411 fps
1587 fps
11111 fps
20000 fps
valid ROI, Line pause = 8
EN_PRELOAD = 1
valid ROI, Line pause = 8
EN_PRELOAD = 1
>64 Pixels
1M75 1M150
286 fps 580 fps
1070 fps 2200 fps
3700 fps 7900 fps
22000 fps 39000 fps
37000 fps 57000 fps
valid ROI, Line pause = 8
EN_PRELOAD = 1
(0,0)
valid ROI, Line pause = 32
EN_PRELOAD = 0
(0,0)
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