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Description of the data path
Fast Parameter Update Timing
After the parameter update stop command all
changed parameters are valid for the available
next image. Frame rate is constant.
Table 43: Encapsulated Update (begin/end): comparison of standard timing and fast timing 2
Camera timing behavior is like this:
If after end of time-out (10 seconds after Quick Format Change Mode) no
parameter update end is sent, all changes will become valid.
A new write event of parameter update begin starts time-out again.
Parameter-List Update
In the Parameter-List Update mode a complete list with IIDC addresses and
values of up to 64 parameters is sent to the camera.
•
Host sends a list with parameters to the camera (advanced feature
space)
•
Microcontroller processes that list
•
All parameters will become active for the same image
•
Dependent on timing mode, the camera will:
– Standard Format Change Mode: use the previous parameters until
the new parameter set is copied to the FPGA
– Quick Format Change Mode (QFCM): waits until all parameters have
been copied to the FPGA and may interrupt an already started inte-
gration for a new integration with the new settings
Example of parameter list:
Address
0xF0F0081C
0xF0F00820
0xF0F00818
...
Table 44: Example of parameter list
Quick Format Change Mode
After the parameter update start command a cur-
rent transfer is interrupted. A started exposure
will be interrupted until the next parameter
update stop command. Exposure of the next image
with new parameters is started.
There may be a gap between two succeeding
images but images are always transmitted com-
peletely.
Value
0x80000100
0x800000ac
0x82000001
...
PIKE Technical Manual V4.1.0
138
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