AHD VIDEO TRANSMISSION
PROBLEMS WITH VIDEO TRANSMISSION:
Non-linear cable loss
Loss of video signal quality
Signal at the end of the line no longer complies with the standard specifications and is not suitable for further processing.
The AHD video signal is driven by a cable line driver with pre emphasis in the high frequency range (6MHz-45MHz) to compensate for nonlinear cable loss. This improves the signal-to-noise ratio over the long transmission path and the associated considerable attenuation.
The signal is postprocessed on the control unit side to correct shape and amplitude (adjustable multi-stage band selective amplifier stages - AHD video equalizer). Additionally the signal is clamped at a constant DC voltage level. The adjustment parameters are used to process signals for different cable types and lengths. They can be saved on files as sets and programmed by software so that in case of service (cable replacement or shortening the cable) the adjustment
can be done easily and time saving.
Bedienkonsole als Verdrahtungs-
board, für alle Verbindungen
für Bedienelemente, Joysticks,
CAMERA MODULE 1
14 x 14 mm
CAMERA MODULE 2
22 x 26 mm
43 x 44x 60 mm