OPERATION
There are two ways to trigger the SAS-1 switch: a signal sensing mode (1) and a voltage control mode (2).
1.In the signal sensing mode, the SAS-1 automatically switches from A to B when a signal is present at input B. A sensitivity control is provided for setting the amount of input level (trigger threshold) needed to activate the switch. The B input will have priority as long as a signal remains at its input. Depending upon the setting of the delay control, the unit switches from B back to A anywhere between ¼ of a second to 30 seconds after the trigger signal (input B) is removed. The SAS-1 can be programmed to trigger from the speaker-level, line-level or video sources. At DIP switch is provided for the programming.
2.In the voltage control mode, applying 5 to 24 volts AC or DC to the control input connector will trigger the SAS-1 to switch. There are several ways this feature can be used:
a)An included wall mount, 16Volt AC transformer (Part# XF00008) can be used as the control voltage source. Plugging the AC transformer into the switched AC outlet of an AM/FM receiver will trigger the SAS-1 to switch every time the receiver is turned on.
b)A toggle switch wired between the output of the AC transformer and the “Control IN” jack can be used as a manual trigger.
c)Any voltage source between 5 to 24 Volts AC or DC can be used to activate the SAS-1. For example, a 12Volt control signal from a home automation system can trigger the SAS-1.
A control output connector is also provided. It has four screw terminals and provides two different outputs. Two of the terminals provide a set of normally open, dry relay contacts and the other two provide 12Volt DC output.
The set of dry contacts “close” whenever the switching section of the SAS-1 is activated. They will remain “closed” as long as the signal that triggered the SAS-1 is present. Depending on the setting of the delay control, they will “open” anywhere between ¼ of a second to 30 seconds after the signal that triggered the SAS-1 is removed. With this feature, the SAS-1 can activate television lift systems, operate electric projector screens, control lighting systems, etc.
