InfraTec VarioCAM User Manual page 11

User Manual for the Thermographic System VarioCAM
3. Technical Description
Image processing electronics
Real-time image processing with the following essential functions (depending on the equipment) is
implemenmted with the help of an FPGA (Field Programmable Gate Array) and an embedded PC
(modular compact internal PC):
■ Detector electronics interface
■ Gain and offset correction
■ Defective pixel treatment
■ Low-pass filtering
■ Zoom generator
■ Graphic overlay
■ FireWire (IEEE 1394) interface*
■ Embedded PC interface
■ Standard-format video-image generator (PAL/NTSC-FBAS, S-Video, RGB)
Opto-mechanics
The following functions are performed with the help of the opto-mechanics assembly group:
■ Focussing (motor focus)
■ Effective range change-over (lens apertures)*
■ Internal NUC (Non Uniformity Correction) using an internal shutter
Furthermore, this assembly group has an optional module for a hardware-based increase of geometric
resolution of the thermographic system onto (768 x 576) IR pixels (detector of [384 x 288] pixels) and
onto (1,280 x 960) IR pixels (detector of [640 x 480] pixels): mode "Resolution Enhancement"*. The opto-
mechanics can be modified for reducing the minimal focus distance*.
Controls
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The VarioCAM hr can be operated with the help of three operating buttons "A" – Automatic,
"T" – Temperature spot and "S" – Start / Stop / Store, on the right top, as well as by means of a
multifunctional joystick with an Enter function and another button "C" – at the rear of the camera. The
controls are arranged to enable single-handed operation.
Special camera operating modes and default settings can be configured by means of the firmware via
menus. Operation of both the camera and the menu structure is described in detail in
Chapter 8, Operation - page 23.
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VarioCAM hr can be remote-controlled via an RS232 interface or. FireWire (IEEE 1394) interface*. The
relevant operating software is also described in Chapter 8.
User Manual
® high resolution
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