AMX NXD-CV7 - Manual (Page 18)

CV7 Touch Panel Accessories
10 7" Modero Widescreen Touch Panels
Wiring the NXA-AVB/ETHERNET for Unbalanced Audio
Most domestic audio equipment has unbalanced audio inputs and outputs. This means that the
audio output (left, right, or mono) appears on a single wire, and is referenced to "0 V" or "Ground".
Typical connectors used are RCA "phono" connectors, DIN plugs/sockets, and 0.25" (6.3mm) or
3.5mm jack plugs/sockets.
Unbalanced audio is adequate for most domestic environments and for line-level signals in a typical
broadcast studio. Problems may occur if the signals are carried over long distances, especially if the
source and destination have separate main supplies. Use the following wiring drawing (FIG. 8) to
configure an unbalanced audio connection.
When using unbalanced audio for the AUDIO IN connector (FIG. 8), the "-" and the "GND"
terminals should be connected together and then connected to the GND of the unbalance audio
signal. When connecting to an unbalanced audio input from the MIC OUT connector (FIG. 8), wire
the "+" terminal to the signal input, and the "GND" terminal to the signal ground.
• MIC OUT: 4-pin mini-Phoenix connector, divided into GND, OUT-, and OUT+ terminal
connectors.
An example of this cable is to strip the terminal ends of a 3.5mm mini-jack and
insert them into their respective locations on the Mic Out port. This signal can
be fed as a Line Level In to either an amplifier or an AMX VOL card.
Either a balanced (+, -, and GND) or unbalanced (+ and GND) audio signal
can be connected to this output.
• Video In BNCs: Feeds either Composite/S-Video Luma or S-Video Chroma signals into the
NXA-AVB/ETHERNET. This feed is then redirected out to a Modero panel
through the front Audio/Video CAT5 port.
• ETHERNET: RJ-45 connector routes data to the G4 touch panel through the front Ethernet
port. These connections use a standard CAT5 Ethernet cable to provide
communication between the target touch panel, breakout box, and NetLinx
Master.
• PWR 2-pin mini-Phoenix connector that connects to a PSN power supply. This port
can be used to provide power to a Modero panel by sending it through the
NXA-AVB/ETHERNET (rear power connector through to the front power
connector).
FIG. 8 Wiring the rear AUDIO IN and MIC OUT for use with Unbalanced Audio
Unbalanced IN
GND
IN-
IN+
GND
IN-
IN+
Left Channel
Right Channel
(Jumper IN- to GND)
Unbalanced OUT
GND
OUT-
OUT+
Microphone
Unbalanced IN
(Jumper IN- to GND)
AUDIO IN
MIC OUT