Appendix B—Serial Communication Technical Details Tau User’s Manual
B-12 April 2009 TAU-0035-00-10, version 100
The DDE filter has an automatic mode that when activated controls the DDE Gain using a
combination of the Dynamic DDE setting and the scene dynamic range. The valid range of the
Dynamic DDE setting is from 1 to 63. Dynamic DDE settings between 1 and 16, provide image
smoothing, with a setting of 1 providing the most smoothing. A Dynamic DDE setting of 17
turns off the Dynamic DDE. A Dynamic DDE setting between 18 and 39 sets the imaging mode
DDE Gain between 16 and 40. A Dynamic DDE setting of 40 or greater provides maximum
enhancement but image artifacts may also be enhanced giving an image with some fixed
pattern noise.
B.6.5 Digital data
The DIGITAL_OUTPUT_MODE command allows the users to select one of the following digital
data options
• 14-bit data
•8-bit data
• digital off
• 14-bit unfiltered
• 8-bit inverted
• 14-bit inverted
• 14- bit inverted unfiltered
B.7 Spare Serial Communications Channel
The camera provides a spare serial communications port consisting of the signals: RX2, TX2,
and GND.
Note
B.8 Analog Video Interface
The camera provides an analog video on the signals named VIDEO_LO and VIDEO_HI.
When the VIDEO_LO signal is tied to ground, the analog video signal meets the timing and
voltage requirements of either NTSC or PAL protocol. (The FLIR Camera Controller software
allows you to select between NTSC or PAL video output formats. The NTSC analog video format
is the default in all cameras.)
The analog video signal is intended to drive a 75-ohm load. Use of coaxial cable with 75 ohm
characteristic impedance is strongly suggested
This serial communications channel is intended for communication with RS-232 controllable
systems.
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