Hardware limit for camera frame rates

Behavior camera

• Camera: SP-5000M-CXP4
• Frame grabber: Euresys Coaxlink Quad G3
• Interface: CXP6 x4

Frame rate calculation

The following calculation is based on the manual "Manual_SP-5000-CXP4" available from https://www.jai.com/products/sp-5000m-cxp4/, section 7.1.2 "Calculation of frame rate" (pages 32-33).

Frame readout time:

$$t_{\rm readout} = \frac{t_{\rm row} (N_{\rm row} + K + 2) + 1 + 3 t_{\rm row} + N_{\rm cycleF}}{f_{\rm sys}}.$$

Maximum frame rate possible:

$$f_{\rm max} = \frac{1}{t_{\rm readout}},$$

where

$$K = \left\lceil \frac{203}{t_{\rm row}} \right\rceil + 3,$$

$$f_{\rm sys} = 86,400,000.$$

The following values depend on ROI width, bit format, and link type. When ROI width is 1984, bit format is mono8, and the link type is CXP6 x4,

$$t_{\rm row} = H_{\rm blanking} = 130,$$

$$N_{\rm cycleF} = 1022.$$

Therefore, when $N_{\rm row} = 1500$ under the conditions above,

$$K=\left\lceil\frac{203}{130}\right\rceil + 3 = 5,$$

$$ f_{\rm max} = \frac{1}{t_{\rm readout}} = \frac{86,400,000}{130(1500 + 5 + 2) + 1 + 3\cdot 130 + 1022} = 437.86 {\rm Hz} $$