The CO/VSDA is a change over realized in a 1/3 unit case (1RU 19") , makes a commutation on the audio and video signals of emergency if the principal signals come to miss.
The frontal panel of the CO/VSDA has the followings commands:

In the AUTO Mode , the Change Over automatically exchanges from the principal video to that substitutive after the period of delay planned by the Time switcher.
The exchange on the principal signal immediately happens after the restoration of the same.

In MANUAL mode, the exchanges happens manually (key A or B). The commutation can also be effected through a remote control.

In accordance with constant improvement policy of products, El.Man (Elettronica Mangione) reserves the right to modify without notice and at any time, features and prices of its own apparatus.