User`s manual

Basic Operation and Features
Basler A500
k 3-17
PRELIMINARY
3.3.2.3 ExSync, Level-controlled Mode with Synchronous Timing 1
Figure 3-14: ExSync, Level-controlled Mode - Exposure Start and Stop when Frame Valid is High
The ExSync signal goes low and goes high while the Frame Valid signal is high. 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 3-14):
• The effective exposure starts d microseconds after the fall of the ExSync signal (exposure
start delay).
• Disregarding possible jitter, the duration of the effective exposure is defined by period p.
• Jitter may shorten (f) or extend (g) the effective exposure, i.e.
duration of the effective exposure = (p - f) to (p + g).
• The duration of the effective exposure can only occur in multiples of m microseconds.
A504k A503k A501k
p Exposure as set by ExSync
d
1.8 µs ... 5 µs 1.8 µs ... 6.25 µs 6.9 µs ... 20.2 µs
f
 2 µs  2.5 µs  7 µs
g
 2 µs  2.5 µs  12.7 µs
m 2 µs 2.5 µs 13.2 µs
ExSync
ExSync Period
3 µs ... 6 µs (A504k)
3.5 µs ... 7.5 µs (A503k)
26.9 µs ... 34.3 µs (A501k)
Frame
Valid
Line
Valid
2 µs ... 3 µs (A504k)
2.5 µs ... 3.75 µs (A503k)
13.5 µs ... 20.2 µs (A501k)
d = 1.8 µs ... 5 µs (A504k)
d = 1.8 µs ... 6.25 µs (A503k)
d = 6.9 µs ... 20.2 µ (A501k)
Integrate
Enabled
f =

2 µs (A504k)
f =

2.5 µs (A503k)
f =

7 µs (A501k)
TIMING CHARTS ARE NOT DRAWN TO SCALE
g =

2 µs (A504k)
g =

2.5 µs (A503k)
g =

12.7 µs (A501k)
p
p