Allied International V2.4.0 Manual Do Utilizador
Controlling image capture
OSCAR Technical Manual V2.4.0
112
Extended shutter
The exposure time for long-term integration of up to 67 seconds can be
extended via the advanced register: EXTENDED_SHUTTER
extended via the advanced register: EXTENDED_SHUTTER
The longest exposure time, 3FFFFFFh, corresponds to 67.11 sec.
Register
Name
Field
Bit
Description
0xF100020C
EXTD_SHUTTER
Presence_Inq
[0]
Indicates presence of this feature (read
only)
only)
---
[1.. 5]
Reserved
ExpTime
[6..31]
Exposure time in µs
Table 38: Advanced register: extended shutter
Note
L
•
Exposure times entered via the 81Ch register are mir-
rored in the extended register, but not vice versa.
rored in the extended register, but not vice versa.
•
Longer integration times not only increase sensitivity,
but also may increase some unwanted effects, such as
noise and pixel-to-pixel non-uniformity. Depending on
the application, these effects may limit the longest
usable integration time.
but also may increase some unwanted effects, such as
noise and pixel-to-pixel non-uniformity. Depending on
the application, these effects may limit the longest
usable integration time.
•
Changes in this register have immediate effect, even
when the camera is transmitting.
when the camera is transmitting.
•
Extended shutter becomes inactive after writing to a
format/mode/frame rate register.
format/mode/frame rate register.