Procedure; Dynamic Range Extension-Superframing; Camera Synchronization - FLIR X6570sc series User Manual

8 Radiometric measurement

8.5.3 Procedure

Note The IWR mode is not available in all camera models.
Follow the procedure below to select the camera integration mode (ITR or IWR):
1. Connect the camera to ResearchIR Max
2. In the camera tab, under Advanced Camera Control, select the integration mode.
8.6 Dynamic range extension—superframing
The main purpose of superframing is to capture a large dynamic range event with various
integration times. Consider a rocket launch as an example. During the launch, a short in-
tegration time would be needed to monitor the plume of the rocket. However, such a
short integration time would not yield adequate images across the the rocket body. If the
integration time was increased to yield adequate images across the rocket body and its
plume, the plume would saturate the detector. Superframing cycles through up to eight
different integration periods. Below is a timing graph explaining the link between the re-
corded frame and the integration time in superframing mode.
Refer to section 6.4.5 Temperature range adjustment, page 22 to set up superframing.

8.7 Camera synchronization

The FLIR X6570sc can be synchronized to an external signal. The synchronization ap-
plies to the timing of an individual frame. The camera features a Sync In connector (4 in
Figure 5.3 Camera back panel description., page 11) and a Sync Out connector (5 in Fig-
ure 5.3 Camera back panel description., page 11).
The FLIR X6570sc makes use of frame synchronizations to control the generation of im-
age data. The generation of a frame consists of two phases: integration and data read-
out. Depending on the timing between these two events, you have two basic integration
modes: ITR and IWR. In ITR mode, integration and data readout occur sequentially. The
complete frame time is the combined total of the integration time plus the readout time.
In IWR mode, the integration phase of the current frame occurs during the readout phase
of the previous frame. In other words, the ITR and IWR refer to whether or not the cam-
era will overlap the data readout and integration periods. In ITR mode, the data is not
overlapped, which means lower frame rates, but this process provides a less noisy im-
age. IWR mode can achieve much faster frame rates, but with a slight increase in noise.
On frame synchronization, the camera immediately integrates, followed by data read out.
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