FLIR X-Series User Manual page 28

Frame Sync
Integration
Integration Period
Dead Time
The Integration and the Data Readout periods can be thought of as two separate processes; however,
they are linked together by certain timing requirements. What this means is the camera can integrate
for a period, start the data read out for that integration period, and during that readout start the
integration period for the next frame. This process is called Integrate While Read (IWR) and can
greatly speed up frame rates. The drawback to this process is it injects a fixed noise pattern into the
data which can be removed by performing a Non Uniformity Correction (NUC) to the data.
NOTE: A NUC update is recommended anytime an adjustment is made to either frame rate or
integration time, regardless of the integration mode.
Frame Sync
Integration
Integration Period
The integration period cannot end before the previous frame's data read and dead time period. The
integration period cannot begin until after the previous frame's data read starts. Therefore, the
calculation used to compute the maximum IWR frame rate depends on the integration and data read
times.
X-series User's Manual
Data Read
Data Width
Dead Time
ITR Frame Generation Process
Integration can't start
before previous frame's
Data Read
Frame Sync
Data Read
Data Width
Dead Time
IWR Frame Generation Process
Frame Sync
Integration
Integration Period
Integration must end after
the Dead Time following
the previous frame's Data
Read
Integration
Dead Time
Integration Period
Dead Time
5 – X-series Camera Controller
Data Read
Data Width
Dead Time
Data Read
Data Width
Dead Time
Dead Time
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