User`s manual

Basic Operation and Features
Basler A500
k 3-15
PRELIMINARY
3.3.2.1 ExSync, Level-controlled Mode with Asynchronous Timing
Figure 3-12: ExSync, Level-controlled Mode - Exposure Start and Stop when Frame Valid is Low
The ExSync signal goes low and goes high while the Frame Valid signal is low. The Integrate
Enabled signal is set to high while the effective exposure occurs. The start, stop, and duration of
the effective exposure are defined in the following ways (see Figure 3-12):
• The effective exposure starts d microseconds after the fall of the ExSync signal (exposure
start delay).
• The duration of the effective exposure is defined by period p.
• The effective exposure stops d microseconds after the rise of the ExSync signal.
ExSync signal can already go low up to 1 µs before Frame Valid is low.
A504k A503k A501k
p Exposure as set by ExSync
d
1.8 µs 1.8 µs 7.2 µs
ExSync
ExSync Period
3.3 µs (A504k)
3.8 µs (A503k)
20.8 µs (A501k)
Frame
Valid
Line
Valid
d = 1.8 µs (A504k)
d = 1.8 µs (A503k)
d = 7.2 µs (501k)
Integrate
Enabled
TIMING CHARTS ARE NOT DRAWN TO SCALE
p
p