Figure 6-17.-Video converter video processing block diagram.
Figure 6-17 is a simplified block diagram of the
video processing sections found in a typical FLIR
power supply-video converter WRA. The gimbal
angle indicator unit receives linear signals from the
control servomechanism azimuth and elevation
gimbal potentiometers. These potentiometers
receive inputs from the gimbals in the
The potentiometers then
generate synthetic video signals. The signals
present short, bright-line segments along the
calibrated scales on the video indicator to show
receiver head position. An example of this is shown
in figure 6-18.
The sync generator module contains a
crystal-controlled clock. The module generates all
timing (sync), clamping, and drive signals for the
receiver-converter and the TV camera. It also
generates all timing, gating, clamping, and blanking
signals for the video processor and gimbal angle
Figure 6-18.-Azimuth/elevation scale on a video indicator.