Rainbow Electronics ATMOS™ 1M60 - Manual (Page 12)

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ATMOS -1M60/1M30 [Preliminary]
5. Camera Features
5.1 Region of Interest
The full resolution of the camera is 1312 pixels by 1024 lines.You might program a smaller reso-
lution in order to reduce the readout time. You must be careful that depending on the
sequencing mode, the exposure time can be reduced too.The authorized values for horizontal
size are 32 to 1312 pixels. This value is rounded to the lower multiple of 16 pixels. The autho-
rized values for vertical size are 32 to 1024 lines. This value is rounded to the lower multiple of 8
lines. See registers ROI area @ 280H, 282H, 284H and 286H Internal Register Mapping on
page 17 .
Examples of frame rate versus resolution:
5.2 Analog Gain
The analog gain can be adjusted by setting the gain register via the serial communication.
• Gain adjusted from 0 dB to 18 dB: code 0 to 6
• Step 3 dB
• Nominal gain (factory configuration): 0 dB
See register Sensor Analog Gain @ 240H, Internal Register Mapping on page 17 .
5.3 Subsampling
– Subsampling 1: All pixels are readout (1312 × 1024)
– Subsampling 2: Two times lower resolution in both axes (656 × 512)
– Subsampling 4: Four times lower resolution in both axes (328 × 256)
See register Subsampling @ 288H, Internal Register Mapping on page 17 .
Subsampling parameters might be combined with the ROI. The minimal window size resulting
from these combinations must be at least 32 × 32 pixels. This leads to the following table of min-
imal ROI size versus Subsampling:
5.4 Output Format
The data format available on the CameraLink output interface is programmable via the serial
interface.
Table 5-1. R.O.I Performance
ROI Size Frame Rate 1M60 (fps) Frame Rate 1M30 (fps)
1312 Ч 1024 48 24
1024 Ч 1024 60 30
640 Ч 480 175 85
Table 5-2. Subsampling Minimum Size
Subsampling Minimum ROI Size
1 32 Ч 32
2 64 Ч 64
4 128 Ч 128