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16 Pelco Manual C557M (10/99)
4.0 OPERATION
4.1 FEATURES
4.1.1 Control Without Video
With this feature, the receiver/driver is capable of detecting Coaxitron
®
commands
from the controller when no video signal is present. Control without video is mainly
desired for the auxiliary function.
4.1.2 Transient Suppression
Transient suppression circuitry which has been designed into the LRD41C21/22-*
receiver/driver reduces the chance of interrupted operation or damage to the
receiver/driver due to voltage spikes on the power, video and signal lines. Tran-
sient suppression does not imply lightning suppression.