Connect The Audio Inputs; Usb (Optional); Npio/Heartbeat - QSC CXD4/2 User Manual

Inputs

Connect the Audio Inputs

ROUTABLE INPUTS
USB
1
HEARTBEAT
GPO
GPI
— Figure 10 —
There are four three-pin Euro-style connectors labeled 1 through 4 providing the audio inputs on the CXD Amplifiers. A single input can be mixed to
one or a combination of outputs. You can use from one to four of the inputs. The inputs
are 10 kΩ balanced or unbalanced, with a sensitivity of either +4 or +14 dBu.
1. Make sure your audio source devices are powered off.
2. Connect the input source wires to the Euro-style connectors as shown.
Figure 12)
3. The CXD Series has the capability of routing the inputs to different outputs. Be sure that
the connections you make here match the configuration of the amplifier.
4. Plug the Euro-style audio connectors into the appropriate inputs on the rear of
the amplifier.

USB (Optional)

The USB cable (supplied) connects to a Mac or PC for use with the Amplifier Navigator
software. You can update the amplifier firmware, save and deploy configuration files, and
more. Refer to the Amplifier Navigator online help for details.

NPIO/Heartbeat

There are two 3.5 mm Euro-style connectors on the rear of the amplifier.
• Heartbeat — The heartbeat output supplies a square wave signal of 1 Hz @ 3.3 V. This signal can connect to a life-safety system to monitor the
go/no-go condition of the amplifier. The amplifier must be completely incapable of producing output for the heartbeat signal to stop. A missing
heartbeat alerts the life-safety system of the disabled condition. A user-initiated condition such as muting the outputs, placing the amplifier in
Standby mode, or placing the amplifier in Mute All mode, does not stop the heartbeat.
• GPO — The functionality of this general purpose output pin has not been determined as of the release of this document.
• GPI — This input is used to put the amplifier into Standby from a remote location. When the GPI is enabled in the Utilities menu, then is shorted to
ground, the amplifier goes into the Standby mode. The front-panel power button is disabled when GPI is enabled.
2 3 4
Unbalanced
— Figure 11 —
(Figure 11 and
11
Balanced
— Figure 12 —
+ -
+ -
+ -
+ -
— Figure 13 —
TD-000367-00-A
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