Basler A501kc Uživatelský manuál stáhnout pdf (Strana 79)

Basic Operation and Features

Basler A500

k 3-29

PRELIMINARY

3.3.5 Free-run VGA Mode (A504k Only)

Figure 3-24: Free-run VGA Mode

• Disregarding possible jitter, the duration of the effective exposure is defined by period p (set

by Timer 1).

• Jitter may shorten or extend the effective exposure, i.e.

duration of the effective exposure = (p - 15.8 µs) to (p + 15.8 µs).

• The duration of the effective exposure can only occur in multiples of 15.8 µs microseconds.



Timer 1 must be set to a minimum of 10 µs and to a maximum of 16645 µs.

With very low exposures, use flash light.

Frame

Valid

Line

Valid

Internal

Control

Signal

p = Timer 1

Internal Control Signal Period

34 µs

16087 µs

580 µs

f =



15.8 µs

Integrate

Enabled

p = Timer 1

TIMING CHARTS ARE NOT DRAWN TO SCALE

g =



15.8 µs

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 149 150

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Basler A501kc Uživatelský manuál Strana 79