Free-Run Mode With Synchronous Timing 2 - Basler WOOD BURNING FIREPLACE Wood Burning Fireplace

Basic Operation and Features

3.3.4.4 Free-run Mode with Synchronous Timing 2

Internal
Control
Signal
Frame
Valid
Line
Valid
Integrate
Enabled
TIMING CHARTS ARE NOT DRAWN TO SCALE
Figure 3-23:Free-run, Programmable Mode - Exposure Start and Stop with Frame Valid High
The effective exposure starts and stops 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 3-23):
• The effective exposure starts d microseconds after the fall of the internal control signal (expo-
sure 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
3-28
PRELIMINARY
p = Timer 1
d = 0.8 µs
p = Timer 1
f = ≤ 2 µs (A504k/kc)
f = ≤ 2.5 µs (A503k)
f = ≤ 7 µs (A501k/kc)
A504 A503
k/kc
exposure set by Timer 1
0.8 µs 0.8 µs
≤ ≤
2 µs 2.5 µs
≤ ≤
2 µs 2.5 µs
2 µs 2.5 µs
Internal Control Signal Period
4 µs ... 6 µs (A504k/kc)
5 µs ... 7.5 µs (A503k)
27.4 µs ... 39.4 µs (A501k/kc)
44 ns (A504k/kc)
60 ns (A503k)
300 ns (A501k/kc)
g = ≤ 2 µs (A504k/kc)
g = ≤ 2.5 µs (A503k)
g = ≤ 7 µs (A501k/kc)
A501
k k/kc
0.8 µs
≤
7 µs
≤
7 µs
13.2 µs
Timer 2
Basler A500
k