2-5
MPX 866 A Media Presentation Matrix Switcher • Installation
PRELIMINAR
Y
Audio input and output
By default, the audio ties follow the video ties. Audio breakaway, which can
be activated via the optional front panel or under Ethernet or RS-232 control,
allows you to select from any one of the audio input sources, regardless of video
group, and route it separately from its corresponding video source. See chapter 3,
Operation
; chapter 4,
SIS Programming and Control
; chapter 5,
Matrix Software
; and
chapter 6,
HTML Operation
for details.
N
Audio ties can be made only to outputs in the computer/audio subgroup (outputs
1 through 6).
Audio inputs (either input subgroup)
h
Connections for balanced and unbalanced audio inputs —
Each input has a
5-pole, 3.5 mm captive screw connector for balanced or unbalanced stereo or
mono audio input. Connectors are included with each switcher, but you must
supply the audio cable.
See fi gure 2-2 to wire a connector for the appropriate input type and
impedance level.
Use the supplied tie-wrap to strap the audio cable to the
extended tail of the connector.
LR
LR
Unbalanced Stereo Input
Balanced Stereo Input
Ring
Sleeve (s)
(high impedance)
(high impedance)
0.3” (7 mm) max.
Tip
Sleeve
Tip
Sleeve
Tip
Ring
Tip
Ring
Do not tin the wires!
Figure 2-2 — Captive screw connector wiring for stereo audio inputs
C
The captive screw audio connector can easily be inadvertently plugged
partially into one receptacle and partially into an adjacent receptacle.
This misconnection could damage the audio circuits. Ensure that the
connector is plugged fully and only into the desired input or output.
N
The length of exposed wires is critical. The ideal length is 0.3” (7 mm).
• If the stripped section of wire is longer than 0.3”, the exposed wires may
touch, causing a short circuit between them.
• If the stripped section of wire is shorter than 0.3”, wires can be easily pulled
out even if tightly fastened by the captive screws.
N
See
fi gure 2-3 to identify the tip, ring, and sleeve when you are making
connections for the switcher from existing audio cables. A mono audio connector
consists of the tip and sleeve. A stereo audio connector consists of the tip, ring
and sleeve. The ring, tip, and sleeve wires are also shown on the captive screw
audio connector diagrams, fi gure 2-2 and fi gure 2-4.
Tip (+)
Sleeve ( )
Sleeve ( )
Ring (-)
Tip (+)
RCA Connector
3.5 mm Stereo Plug Connector
(balanced)
Figure 2-3 — Typical audio connectors
The audio level for each input can be individually set via the front panel or
Ethernet or RS-232 control to ensure that the level on the output does not vary
from input to input. See chapter 3,
Operation
; chapter 4,
SIS Programming and
Control
; chapter 5,
Matrix Software
; and chapter 6,
HTML Operation
for details.
im Vertrieb von
CAMBOARD Electronics
www.camboard.de
Tel. 07131 911201
Fax 07131 911203
