QSC SRA 1222 User Manual page 30

CONNECTIONS-
12 Volt DC Remote Trigger
For contact closure remote
trigger operation, use stereo
(3 terminal) 3.5 mm mini-plug.
Do not use a mono (2 termi-
nal) plug.
Connect a suitable two-
conductor cable to the plug.
Connect the sleeve of the plug
to one wire and the ring to the
other wire. The tip of the plug
is left unconnected.
The other end of the cable is
connected to a pair of switch
or relay contacts. These
contacts are typically inside
the main AC power controlling
device (processor) When the
switch or relay contacts are
closed, the amplifier will turn
off. When the switch or relay
contacts are opened, the
amplifier will turn on.
Another possible remote on/
off solution is shown to the
right. This solution uses a
switch wired to the stereo
mini-plug. The switch could be
replaced with a set of relay
contacts, should your applica-
tion require it.
Note- We recommend the front panel AC power switch be switched to the
"off" position anytime the system will not be operated for an extended period.
This prevents the remote trigger from accidentally powering up the amplifier
while you are away. It is a good idea to do the same with all remote turn-on/
turn-off capable equipment when it is not to be operated for extended periods.
30
Remote on/off (remote trigger) Contact Closure Type
Processor (or other "master" turn-on device)
with contact closure remote trigger output.
Connect contacts to sleeve and
ring of stereo mini plug.
Tip connection not used.
To additional contact closure
remote trigger inputs.
Contact closure remote
trigger output. Connect to
SRA amplifiers using stereo
mini plug (ring and sleeve).
to remote
trigger in