38
Flare 12M CXP User's Manual
CoaXPress Output
Format
Horizontal
Resolution
FOT
(in µs)
EOT
(in µs)
Dual Line
Time
(in µs)
Minimum
Inter-Frame
Time (in µs)
4 x CXP-6
8-bit
4096 ≥ HR > 2048
34.40
15.41
3.44
19
2048 ≥ HR > 1024
30.72
15.41
1.92
15
1024 ≥ HR > 512
30.72
15.41
1.92
15
512 ≥ HR
30.72
15.41
1.92
15
10-bit
4096 ≥ HR > 2048
60.20
30.60
4.30
30
2048 ≥ HR > 1024
30.10
15.30
2.15
15
1024 ≥ HR > 512
30.10
15.30
2.15
15
512 ≥ HR
30.10
15.30
2.15
15
Table 10. FOT, EOT and line time periods
The camera re-calculates the allowable range for the frame period when the output format or
resolution is changed. The camera will set the frame period to the new minimum. The range
for the exposure times is also re-calculated, and if any current exposure time is outside of the
new range it will be set to the maximum.
Frame rate calculation example:
➢
Dual Link CXP-3 at 8-bit with a resolution of 1280 x 720
•
Frame Period
= FOT + Readout Time
•
= 68.8 µs + ((720/2) x 6.88 µs)
= 5022.4 µs
•
Frame Rate
= 1 / Frame Period = 392.8 Hz
Note that the camera uses a 4.10 fixed point value for the line time to calculate the frame
period, so the actual frame period reported by the camera may be slightly different than those
calculated using floating point math. Table 11 shows some sample frame rates.
IO Industries Inc.
www.ioindustries.com
Revision 2.0
