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DOC1212B
REV: 02-13
DNA78X4 DIGITAL NETWORK 4CH POWER AMPLIFIER
INSTALLATION INSTRUCTIONS
This is the secondary port and should only be used in applications that utilize a redundant network
topology. It is critical that the primary and secondary Ethernet ports are
never connected to the
same the same network or vLAN
.
Condition
Left LED
Right LED
Conductor
Flashing Orange
Flashing Green
Performer
Solid Orange
Flashing Green
Fault
Flashing Orange
Flashing Orange
6. Fault Relay
This connector utilizes a 3-pin Phoenix plug with 3.8mm spacing to access the status of the fault
relay. The relay is energized when no fault condition is present and the contact is closed between
the NC and C terminals. The relay will de-energize when a power supply fault is present and the
contact is closed between the NO and C terminals.
Nominal switching capacity
1A 30 V DC, 0.3A 125 V AC (resistive load)
Max. switching power
30 W (DC), 37.5 V A (AC) (resistive load)
Max. switching voltage
110 V DC @ 0.27A, 125 V AC @ 0.3A
7. Ambient Sensor Inputs
These connectors utilize 3-pin Phoenix plugs with 3.88mm spacing to connect up to eight (8) 540S
ambient sensors. The following connections are required for each sensor.
V
+27 VDC to power 540S sensor
IN
Input signal from 540S sensor
GND
Ground for 540S sensor
Up to two (2) sensors can be used to control each amplifier output channel. When two sensors are
used, the signals from both sensors are averaged to provide a signal to adjust the associated out-
put channel. Sensors must be configured and calibrated in the system software in order to operate
properly. Sensors are assigned to output channels as shown below.
Sensor
Input
Amplifier Channels
Controlled
1 and 2
1A
3 and 4
1B
5 and 6
2A
7 and 8
2B
8. Ground Terminal
This connection is provided for the shield if shielded speaker wire is used.
9. Amplifier Card 2 Outputs
This socket provides the outputs for both channels on amplifier card 2. Use the provided 4-pin
Phoenix plug to connect the loudspeaker lines to the device. Use stranded 2-conductor unshield-
ed wire of the appropriate gauge for loudspeaker connections.
