Pike
Technical
Manual
V5.2.3
182
Controlling image capture
Controlling
image
capture
Exposure time (shutter) and offset
The
exposure
(shutter)
time
for
continuous
mode
and
Trigger_Mode_0
is
based
on
the
following
formula:
Shutter
register
value
×
time
base
+
offset
The
register
value
is
the
value
set
in
the
corresponding
IIDC
1.31
register
(SHUTTER
[81Ch]).
This
number
is
in
the
range
between
1
and
4095.
The
shutter
register
value
is
multiplied
by
the
time
base
register
value
(see
The
default
value
here
is
set
to
20
µs.
A
camera-specific
offset
is
also
added
to
this
value.
It
is
different
for
the
camera
models:
Exposure time offset
Minimum exposure time
Camera model
Exposure time offset
Pike
F-032
17
µs
Pike
F-100
42
µs
Pike
F-145
38
µs
Pike
F-145-15fps
70
µs
Pike
F-210
42
µs
Pike
F-421
69
µs
Pike
F-505
26
µs
Pike
F-1100
128
µs
Pike
F-1600
635
µs
Table 73: Camera-specific exposure time offset
Model
Minimum exposure time
Effective min. exp. time
= Min. exp. time + offset
Pike
F-032
1
µs
1
µs
+
17
µs
=
18
µs
Pike
F-100
1
µs
1
µs
+
42
µs
=
43
µs
Pike
F-145
1
µs
1
µs
+
38
µs
=
39
µs
Pike
F-145-15fps
1
µs
1
µs
+
70
µs
=
71
µs
Pike
F-210
1
µs
1
µs
+
42
µs
=
43
µs
Pike
F-421
1
µs
1
µs
+
69
µs
=
70
µs
Table 74: Camera-specific minimum exposure time