Description of the data path
PIKE Technical Manual
V5.0.0
170
The exact sequence is:
Block-write (this needs to be a functionality of the underlying software stack
(e.g. AVT FirePackage). It may not be available for third party IIDC software
stacks.) of list to advanced feature address
Camera timing behavior is like this:
Standard Update (IIDC)
In the
Standard Update (IIDC)
mode single parameter are sent to the cam-
era.
•
Standard Update (IIDC)
shows same behavior as MARLIN
•
Parameter will be sent from host to camera and will be activated as soon
as possible without interruption of the transfer
•
If the host updates more than one parameter (without block write) the
parameters may become active in different images
•
Standard Update (IIDC)
can be combined with the new parameter
update timing modes
Camera timing behavior is like this:
Fast Parameter Update Timing
Quick Format Change Mode (QFCM)
After block write command is processed in the
camera all changed parameters are valid for the
available next image. Frame rate is constant.
After transfer of the parameter list via block write
a current transfer will be finished. A started expo-
sure will be interrupted until the microcontroller
has processed the list and copied it into the FPGA.
Exposure of the next image with new parameters
is started.
There may be a gap between two images.
Table 49:
Parameter-List Update
: comparison of standard timing and
QFCM
Fast Parameter Update Timing
Quick Format Change Mode (QFCM)
After sending a new parameter value, the changed
parameter value is valid for the available next
image. Frame rate is constant.
After sending a new parameter value, the changed
parameter value is valid for the available next
image.
A running exposure will be interrupted and the
image is dropped.
There may be a gap between two consecutive
image transfers.
Table 50:
Standard Update (IIDC)
: comparison of
Standard Format Change Mode
and
QFCM
