Pike
Technical
Manual
V5.2.3
183
Controlling image capture
Controlling
image
capture
Example:
Pike
F-032
register
value
×
time
base
=
exposure
time
100
×
20
µs
+
17
µs
=
2017
µs
exposure
time
The
minimum
adjustable
exposure
time
set
by
register
is
1
µs.
The
real
minimum
exposure
time
of
Pike
F-032
is
then:
1
µs
+
17
µs
=
18
µs
Extended shutter
The
exposure
time
for
long-term
integration
of
up
to
67
seconds
can
be
extended
via
the
advanced
register:
EXTENDED_SHUTTER
The
longest
exposure
time,
3FFFFFFh,
corresponds
to
67.11
sec.
The
lowest
possible
value
of
ExpTime
is
camera-specific,
see
Pike
F-505
1
µs
1
µs
+
26
µs
=
27
µs
Pike
F-1100
1
µs
1
µs
+
128
µs
=
129
µs
Pike
F-1600
1
µs
1
µs
+
635
µs
=
636
µs
Camera
Register value
Time base (default)
Pike
F-032
100
20
µs
Table 75: Register value and time base for Pike F-032
Register
Name
Field
Bit
Description
0xF100020C
EXTD_SHUTTER Presence_Inq
[0]
Indicates
presence
of
this
feature
(read
only)
---
[1
to
5]
ExpTime
[6
to
31] Exposure
time
in
µs
Table 76: Advanced register: Extended shutter
Model
Minimum exposure time
Effective min. exp. time
= Min. exp. time + offset
Table 74: Camera-specific minimum exposure time (continued)