Extron electronic 68-1383-01 REV. E manual Captive Screw Connector Wiring for Audio Inputs

c Audio Inputs (local audio) connectors — Connect balanced or unbalanced stereo audio inputs to these 3.5 mm, 5-pole captive screw connectors. Connectors are included with each switcher, but you must supply the audio cable. See figure 7 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. High impedance is generally over 800 ohms.

Tip Sleeve

Tip

Sleeve

L	Tip
	Ring
	Sleeve (s)
R	Tip
	Ring

L R

Do not tin the wires!	Unbalanced Stereo Input	Balanced Stereo Input
	(high impedance)	(high impedance)

Figure 7. Captive Screw Connector Wiring for Audio Inputs

CAUTIONS: • 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.

•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.

•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 output circuits. Ensure that the connector is plugged fully and only into the desired input or output.

A mono audio connector consists of a tip and sleeve. A stereo audio connector consists of a tip, ring and sleeve. See figure 8 to identify the tip, ring, and sleeve parts of the connector when you are making connections for the switcher from existing audio cables. The ring, tip, and sleeve wires are also shown on the captive screw audio connector diagrams, figure 7 and figure 10.

	Tip (+)
Tip (+)	Ring (-)
Sleeve ( )	Sleeve ( )
RCA Connector	3.5 mm Stereo Plug Connector
	(balanced)

Figure 8. Typical Audio Connectors

The audio level for each input can be individually set via the front panel or remote control to ensure that the level on the output does not vary from input to input (see “Viewing and Adjusting the Input Audio Level“ in the “Operation” section). You can also use SIS commands (see the “Programming Guide” section), the Matrix Switchers Control Program (see the “Matrix Software“ section), or the HTML pages (see the “HTML Operation” section).

dInput Select switches (switchers other than the

MTPX Plus 128) — For inputs 1 through 3 (matrix sizes 1616 and smaller, excluding the MTPX Plus 128) or inputs 1 through 6 (matrix sizes 1632 and larger), set these DIP switches to the Local (up) position to select the local

(RGB video and audio) input. Set the DIP switches to the RJ-45 (down) position to select the MTP input.

LOCAL

ON

1 2 3

RJ - 45

INPUT SELECT

LOCAL

RJ-45

MTPX Plus Series • Installation 14