On the other hand, a universal address permits all units to be controlled simultaneously. The security feature is activated and deactivated using a specific 8 digit sequence. Once activated the delay line with remain deaf to all touch-tone commands except one. A second 8 digit sequence unlocks the security feature. Further, the security feature can be applied on a selective or universal basis.
Selectivity permits control activation of a single unit - keeping all other units locked.
Universal application, permits all units to be locked or unlocked simultanously. FLAT GAIN amplifies or attenuates all frequencies by a variable factor to compensate for transmission differences to diverse transmitters. Flat gain is also controlled by touch-tones so that precise level adjustments can be made from a central or strategic site. This permits a system to be conveniently normalized from a central location. Gain is adjustable from 6 dB loss to 6 dB gain in 0.1 dB steps.