No.20S025-02 7.4 Frame rate The frame rate of camera calculates with below formula with ROI and exposure time settings. ● Formula of frame rate Frame rate [fps] = 1,000,000 / (Number of lines for one frame x 1 H time [usec.]) 1 H time [usec] = “Hnum” value / 74.25 Hnum value * Number of lines for one frame is one of great value of below two values:
(a) Number of lines for one frame = Number of lines of sensor frame + 38 (b) Number of lines for one frame = Number of lines for exposing + 10 * Please refers next page for “Number of lines of sensor frame” * Number of lines for exposing = ((Exposure time [usec.] - 13.73) / 1 H time [usec]) * Integer value (round down) ● Number of lines of sensor frame “Number of lines of camera frame” based on ROI setting, and “Number of lines of sensor frame” are different. “Number of lines of sensor frame” is total number of lines of sensor region as below formula.
Number of lines of camera frame = Height setting of camera (total MultiHeight for multi ROI operation) Number of lines of sensor frame = Total “Number of lines of sensor region” Number of lines of sensor region = “End position of sensor region” - “Start position of sensor region” For one ROI region:
Start position of sensor region = (OffsetY setting + 4) / 8 * Integer value (round down) End position of sensor region = (OffsetY setting + Height setting + 7) / 8 * Integer value (round down) For multi ROI regions0 Start position of sensor region = (MultiOffsetY setting + 4) / 8 * Integer value (round down) End position of sensor region = (MultiOffsetY setting + MultiHeight setting + 7) / 8 * Integer value (round down) STC-MBS510CXP6 / STC-MCS510CXP6 Product Specifications and User’s Guide 22/49 CXP-6 CXP-3 8bit 10bit 12bit 8bit 10bit 12bit Full resolution 360 440 519 622 777 933 Decimation 218 250 396 311 388 466 Binning 360 440 519 622 777 933