Operating Modes; Acquisition Control (Change The Frame Rate); Acquisition Control; Calculation Of The Frame Rate - JAI GO-5000M-PMCL User Manual
5m cmos digital progressive scan monochrome and color camera
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GO-5000M-PMCL / GO-5000C-PMCL
8.
Operating modes
8.1.
Acquisition control (change the frame rate)
8.1.1
Acquisition control
With Trigger OFF (free running mode – see section 7.2.1), the default frame rate of the camera is based
on the specified ROI. The smaller the ROI, the faster the default frame rate. However, it is possible to
specify a free-running frame rate (i.e., no trigger needed) that is slower than the default rate. This can
be useful when a longer exposure time is needed for a specific ROI.
Modification of the frame rate is done by entering a value in the AcquisitionFrameRate control
corresponding to the frame frequency (Hz). Allowed values range from the shortest frame rate to 0.125
Hz (fps), however if the value entered is less than the time required for the default frame rate, the
setting is ignored and the default frame rate is used.
The setting range in Acquisition Frame Rate is:
Shortest
Inverse number of time
required to drive all pixels in
the area set by ROI command
8.1.2
Calculation of the frame rate
The frame rate depends on the tap geometry and is calculated in the following formula.
Maximum Frame Rate (fps) = 1/(Rounddown
Where,
*1
[Trow]=Roundup
((Roundup
If the result of the calculation is equal or less to 164, [Trow] is fixed to 164.
Binning OFF:
[W] = [Width
Binning ON:
[W] = [Width
Table-16 Figures for A to E by the tap geometry.
Tap
CL Clock
Geometry
Frequency(MHz)
84.99(High)
1X2-1Y
72.85(Mid)
48.57(Low)
84.99(High)
1X3-1Y
72.85(Mid)
48.57(Low)
84.99(High)
1X4-1Y
72.85(Mid)
48.57(Low)
1X8-1Y
72.85(High)
(8bit)
48.57(Low)
1X8-1Y
58.28(Mid)
(10bit)
48.57(Low)
to
to
*3
([Trow]x16/C) x ([H]+E) x 0.988
*1
*2
(2560 /A
) x [W] /2560 + B) x A
*5
], [H] = [Height
*6
]
*5
] + 1, [H] = [Height
A
B
C
20
169.9999
2
18
145.7142
16
15
254.99985
3
384
16
218.5713
14
145.7142
339.9998
4
12
291.4284
194.2856
12
577.6
582.8568
384
388.5712
8
14
460.8
466.28544
384
388.5712
- 41 -
Longest
0.125 Hz (fps) = 8 seconds
*2
) x C /(Dx16)
*6
]
D
E
Max. Frame Rate(fps)
16
97.1428
14
16
18
*4
) x 1000000
*7
31.9
27.4
18.3
47.8
41.0
27.4
63.6
54.7
36.4
107.1
70.8
84.9
70.8
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