Specifications

23
DataPort pin identification
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
To DataPort
Pin 2
To DataPort
Pin 2
To DataPort
Pin 2
To DataPort
Pin 2
(Amp chassis)
open = operate
closed = standby
Additional
amplifiers
(when applicable)
Remote on/off switching through the DataPort
Output
DC Supply
DC Fault Monitor
Balanced
In
Filters Gain
Clip
Limiting
Muting
DC
Blocking
Display
Temperature
Sense
Fan
Power
Control
+ Out
– Out
The output circuitry is actively clamped during clipping for smooth and very
fast recovery. The clamp also feeds a proportional clip limiter, which actually
senses the depth of clipping and responds accordingly.
The balanced inputs use premium 0.1% precision resistors for very high
noise rejection. The precision components used in the input filters and all
other circuitry ensure accurate performance.
Shutdown. The amplifier mutes as soon as power is shut off, preventing
turn-off noises. Serious faults trigger a shutdown of the power supply; the
high switching frequency cuts off power within microseconds to limit
damage.
Exclusive CX features and accessories
DataPort
The amplifier features a DataPort, which connects to a QSControl MultiSignal Processor or other QSC accessories
via the HD-15 connector.
QSControl is a QSC-exclusive system for remotely controlling and monitoring amplifiers and other equipment
via an Ethernet-based data network and a personal computer. The operating software is easily customized using
Microsoft Visual Basic.
Remote on/off using the DataPort
Even if you don’t use QSControl or an accessory with the amplifier, you can use the DataPort to remotely switch
one or more amplifiers on and off without having to switch AC currents. Shorting pin 2 of the DataPort to chassis
ground places the power supply in standby, shutting off the amplifier circuitry. Removing the short allows the
power supply to start up again, and the amplifier goes through its startup sequence. You can connect together
pin 2 of several CX amplifiers in the same rack and switch this connection to chassis ground to use as
a remote on/off. There is no surge of inrush current when turning on a CX amp, so there is no danger
of tripping circuit breakers, and no need for sequential turn-on.