FLIR Tau Camera TAU-0035-00-10 User Manual page 30

3—Basic Operation of the Tau and GUI
The Tau camera displays an on-screen
symbol called the Flat Field Imminent
Symbol prior to performing an automatic
FFC operation. As shown in Figure 3-4, it
is the square in the upper right of the
video output and is displayed nominally 2
seconds prior to the FFC operation. The
duration of the FFC Imminent Symbol
can be set using the FFC Warn Time
setting in the Analog Video tab. Setting
the Warn Time to less than 15 turns off
the warning (see paragraph 3.8).
External Sync Mode:
camera provides the ability to either accept or output a
frame synchronization signal on pin 21 of the 50-pin
Hirose connector or pin 26 of the Photon Replicator
board. This functionality can also be disabled. The designed
signal levels are 0V and 3.3V.
Disabled: The camera will turn off frame synchronization.
Slave: The camera will accept a frame synchronization signal on the interface
connector. The camera output will be frozen if the camera is in slave mode and no
external synchronization signal is received.
The focal plane array readout cycle starts when the external synchronization signal is
received and the camera will continue the output cycle until the frame is complete.
The frame sync signal embedded in the respective digital output should be used to
acquire digital data, not the external sync I/O.
Maximum external sync input rates are up to 29.980 Hz for NTSC and 27.25 Hz for
PAL. The 'Slow Video' versions of the Tau camera will have the same external sync
frame rates, but the image data output will be at 1/4 the rate (NTSC) or 1/3 the
rate (PAL).
Master: The camera will output a frame synchronization signal on the interface
connector when configured as a master. The output pulse width will be 100 ns at the
standard frame rates (27.970 Hz for NTSC; 25.000 for PAL).
Operating Mode:
The Tau camera will freeze the
analog frame imaged when Frozen is selected. Live video
will cease and the frozen frame will persist. To return the
camera to live video, select Real-Time video mode.
Save Settings:
After using the FLIR Camera Controller GUI to change
camera modes and settings to your desired values, use the Save Settings
button to store your current selections as new power-up defaults. The next
time the camera is powered, the Tau camera will remember these saved
settings. If you do not click Save Settings, the changes you make via the FLIR Camera
Controller GUI will be valid only for the current session. Cycling power to the camera will revert
to the previously saved settings.
3-14
Figure 3-4: Flat Field Imminent Symbol
The Tau
June 2011
Tau User's Manual
TAU-0035-00-10, version 150