Pike Technical Manual
V5.2.0
325
Configuration of the camera
Extended shutter
The exposure time for long-term integration of up to 67 seconds can be entered
with μs precision via the EXTENDED_SHUTTER register.
The minimum allowed exposure time depends on the camera model. To deter-
mine this value write
1
to the
ExpTime
field and read back the minimum allowed
exposure time.
The longest exposure time, 3FFFFFFh, corresponds to 67.11 seconds.
4
20
Default value
5
50
6
100
7
200
8
500
9
1000
Note
The ABSOLUTE VALUE CSR register, introduced in IIDC V1.3, is
not implemented.
Register
Name
Field
Bit
Description
0xF100020C
EXTD_SHUTTER
Presence_Inq
[0]
Indicates presence of this fea-
ture (read only)
---
[1..5]
Reserved
ExpTime
[6..31]
Exposure time in μs
Table 160: Advanced register:
Extended shutter
Note
•
Exposure times entered via the 81Ch register are mirrored
in the extended register, but not vice versa.
•
Changes in this register have immediate effect, even
when camera is transmitting.
•
Extended shutter becomes inactive after writing to a for-
mat / mode / frame rate register.
•
Extended shutter setting will thus be overwritten by the
normal time base/shutter setting after Stop/Start of
FireView or FireDemo.
ID
Time base in μs
Table 159: Time base ID
