Instruction manual

Guppy PRO Technical ManualV4.1.0
216
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.
Test images
Bit [8] to [14] indicate which test images are saved. Setting bit [28] to [31] acti-
vates or deactivates existing test images.
By activating any test image the following auto features are automatically dis-
abled:
• auto gain
• auto shutter
• auto white balance
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 133: 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 be overwritten by the nor-
mal time base/shutter setting after Stop/Start of FireV-
iew or FireDemo.