Allied Vision Technologies MF-145B2 Manuel d'instructions télécharger pdf (Page 86)

Video formats, modes and bandwidth

MARLIN Technical Manual

Page 78

In video Format_7 frame rates are no longer fixed but can be varied dynamically by the

parameters described below.

The following formula is used to calculate for the CCD models the highest frame rate in Format_7:

ScanDumpDummyeTransCh

CCDIn

TTTT

FPSFPS

+++

arg

Formula 1: Frame rate calculation

It assumes that the maximum frame rate is the inverse of the sum of all events in a CCD, which

take time such as:

• The time to transfer the storage to the vertical shift register (Charge transfer time)

• The time to shift out the dummy lines

• The time to dump the lines outside the AOI

• The time to shift out the lines of the AOI. (Scanning time)

For the different sensors, different values apply.

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Allied Vision Technologies MF-145B2 Manuel d'instructions Page 86