Exsync, Programmable Mode With Synchronous Timing 2 - Basler A500k User Manual

3.3.3.4 ExSync, Programmable Mode with Synchronous Timing 2

ExSync
Frame
Valid
Line
Valid
Integrate
Enabled
TIMING CHARTS ARE NOT DRAWN TO SCALE
Figure 3-19: ExSync, Programmable Mode - Exposure Start and Stop with Frame Valid 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 3-19):
• 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 only occur in multiples of m microseconds.
p
d
f
g
m
k
Basler A500
PRELIMINARY
p = Timer 1
d = 1.7 µs ... 3.7 µs (A504k)
d = 1.7 µs ... 4.2 µs (A503k)
d = 6.9 µs ... 20.2 µs (A501k)
p = Timer 1
f = 1 µs (A504k)
f =  1.25 µs (A503k)
f =  7.4 µs (A501k)
k
A504 A503
Exposure as set by Timer 1
1.7 µs ... 3.7 µs 1.7 µs ... 4.2 µs
 
1 µs 1.25 µs
 
2 µs 2.5 µs
2 µs 2.5 µs
ExSync Period
5.1 µs ... 6.6 µs (A504k)
6.35 µs ... 8.1 µs (A503k)
41.2 µs (A501k)
44 ns (A504k)
60 ns (A503k)
300 ns (A501k)
g =  2 µs (A504k)
g = 2.5 µs (A503k)
g =  20.7 µs (A501k)
k k
A501
6.9 µs ... 20.2 µs

7.4 µs

20.7 µs
13.2 µs
Basic Operation and Features
3-23