User`s manual

Basic Operation and Features
3-22 Basler A500k
PRELIMINARY
3.3.3.3 ExSync, Programmable Mode with Synchronous Timing 1
Figure 3-18: ExSync, Programmable Mode - Exposure Start and Stop When Frame Valid is High
The effective exposure starts and stops while the Frame Valid signal is high. The FlashOut 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 3-18):
• The effective exposure starts d microseconds after the rise of the ExSync signal (exposure
start delay).
• Disregarding possible jitter, the duration of the effective exposure is defined by period p (set
by Timer 1).
• 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 jitter by 1 µs and it can only occur in multiples of m
microseconds.
A504k A503k A501k
p Exposure as set by Timer 1
d
1.7 µs ... 3.7 µs 1.7 µs ... 4.2 µs 6.9 µs ... 20.2 µs
f
 1 µs  1.25 µs  7.4 µs
g
 2 µs  2.5 µs  20.7 µs
m 2 µs 2.5 µs 13.2 µs
Frame
Valid
ExSync
ExSync Period
p = Timer 1
5 µs ... 6 µs (A504k)
6.25 µs ... 7.5 µs (A503k)
26.2 µs ... 32.8 µs (A501k)
Line
Valid
2 µs ... 3 µs (A504k)
2.5 µs ... 3.75 µs (A503k)
13.5 µs ... 20.2 µs (A501k)
d = 1.7 µs ... 3.7 µs (A504k)
d = 1.7 µs ... 4.2 µs (A503k)
d = 6.9 µs ... 20.2 µs (A501k)
Integrate
Enabled
f =

1 µs (A504k)
f =

1.25 µs (A503k)
f =

7.4 µs (A501k)
p = Timer 1
TIMING CHARTS ARE NOT DRAWN TO SCALE
g =

2 µs (A504k)
g =

2.5 µs (A503k)
g =

20.7 µs (A501k)