Extron electronics Matrix 12800 Wideband video User Manual page 28

N For audio inputs and outputs, the length of exposed wires is critical. The ideal
length is 3/16-inch (5 mm).
• If the stripped section of wire is longer than 3/16-inch, the exposed wires may
touch, causing a short circuit between them.
• If the stripped section of wire is shorter than 3/16-inch, wires can be easily
pulled out even if tightly fastened by the captive screws.
k
Balanced and unbalanced audio input connectors — Each input has a
3.5 mm, 5-pole captive screw connector for balanced or unbalanced stereo
audio input. Connectors are included with each Matrix 12800 audio switcher,
but you must supply the audio cable
See figure 2-10 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.
Sleeve
Sleeve
Do not tin the wires!
Figure 2-10 — Captive screw connector wiring for inputs
N See figure 2-11 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, figure 2-10 and figure 2-12.
Tip (+)
Sleeve ( )
RCA Connector
Figure 2-11 — Typical audio connectors
The audio level for each input can be individually set, via the front panel
controller, either RS-232/RS-422 port, or the Ethernet port, to ensure
that the level on the output does not vary from input to input. See the
Matrix 12800 Switcher Front Panel Controller User Guide, and see chapter 3,
"Virtualization/Control
chapter 5, "Web Operations" in this manual.
Tip
Ring
Tip
Sleeves
Tip
Tip
Ring
Unbalanced Stereo Input
Tip (+)
Ring (-)
Sleeve ( )
3.5 mm Stereo Plug Connector
(balanced)
Software", chapter 4, "Programming
Matrix 12800 Switchers • Installation
Balanced Stereo Input
Guide", and
2-13