(balanced/unbalanced, mono)
Tip (+) Gnd (Sleeve, )
Ring ()
Aux/Mix Input Wiring

Installation, cont’d

Audio connections

The stereo audio inputs 1–3 ( 7 and 8 on page 2-5 and below) correspond to video inputs 1, 2, and 3. All four audio inputs can be selected via the front panel buttons, RS-232 control (including MLC), or the MediaLink Control Software. An audio signal from one of these inputs is output only when the corresponding input is selected. Using the MediaLink Control Software you can separately adjust the level of each of these audio inputs.

Via RS-232 control, audio input signals can also be switched separately from the video signals (a feature called “audio breakaway”). See pages 4-4 and 4-8.

7Computer audio inputs (MLS 102 VGA only) — These inputs each accept unbalanced stereo audio input via a 3.5 mm stereo

Tip (+)

Sleeve (Gnd)

mini receptacle (tip-ring-

sleeve type). If you do

 

 

 

 

not have a pre-

 

 

terminated audio cable,

 

Ring (R, -)

wire the mini jack on

 

Tip (L, +)

each end of the cable as

 

 

shown at left.

Sleeve (Gnd)

8Audio Inputs (all models) — Each of these 3-pole, 3.5 mm

captive screw

 

L R

L R

connectors accepts one

 

 

unbalanced stereo or

 

 

 

mono audio input.

 

 

 

Wire each captive screw

 

 

connector as

 

 

 

shown at right,

 

 

 

depending on the

Left (+)

Left (+)

input type.

Gnd (Sleeve,

)

Gnd (Sleeve, )

Right (+)

Audio Input Wiring

Audio Input Wiring

(unbalanced, mono)

(unbalanced, stereo)

Connect two RCA-style (tip-ring) connectors to the other end of each audio input cable as shown at right:

Tip (+) Sleeve (Gnd)

9 Aux/Mix Mono audio input (all models)

The Aux/Mix Mono audio channel is

always active: its signal is output no matter which, if any, other audio input (input 1, 2, 3, or 4) is selected. For example, you could connect the output of a wireless microphone receiver to

this port so the presenter’s comments can always be heard and are independent of the A/V source used for the presentation.

The mix output level can be adjusted between -43 dB and +24 dB.

The Aux/Mix level must be adjusted

AUX/MIX

physically via the front panel

 

MONO

control. It cannot be adjusted via

 

 

 

 

 

 

 

 

 

 

 

software.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connect a 3.5 mm, 3-pole captive screw connector to one end of an audio cable as shown at right. Wire the other end to two tip-ring connectors or one tip-ring-sleeve connector as shown in 7 and 8 , and connect it between the MLS 100 Series switcher and the auxiliary audio source.

10Audio output (Preamp) (all models) — Connect self-powered speakers or another stereo audio device to the MLS via this

5-pole, 3.5 mm captive screw connector. Depending on how the connector is wired, the audio output can be balanced or unbalanced stereo audio. Wire the connector as shown below.

Unbalanced Output

 

Balanced Output

 

Tip

L

Tip

L

 

See Caution

Ring

 

OUT

 

OUT

Sleeve (s)

Sleeve (s)

 

Tip

R

Tip

R

 

See Caution

Ring

 

 

 

 

CAUTION

Connect the sleeve to ground (Gnd). Connecting

 

 

the sleeve to a negative (-) terminal will damage the

 

audio output circuits.

 

 

Later, after all the equipment has been cabled and powered on, use the MediaLink Control Program or an RS-232controller to set the per-input gain/attenuation to match the correct audio output level for the kind of output (balanced or unbalanced) you need. See pages 2-9 and 4-10 for details on determining and setting the gain/attenuation to produce the desired output levels.

If you wire an audio output for balanced output, the MLS outputs a unity signal (input level = output level). Wiring an audio output for unbalanced output causes the audio signal to be attenuated by 6 dB. See pages 2-9 and 2-10 for instructions on adjusting audio gain.

Overall volume control ranges from 0% (90 dB attenuation) to 100% (0 dB attenuation). Adjustment increments are 1 dB for steps from 1% to 40% volume. Adjustments are in 0.5 dB increments from 41% to 100% of full volume.

2-6

MediaLinkVersaTools© Switchers • Installation

MediaLinkVersaTools© Switchers • Installation

2-7

Page 9
Image 9
Extron electronic MLS 102 VGA, MLS 103 V, MLS 103 SV, MLS 100 A Audio connections, Aux/Mix Mono audio input all models

MLS 100 A, MLS 103 SV, MLS 102 VGA, MLS 103 V specifications

Extron Electronics is renowned for its innovative and high-quality AV solutions, and the MLS series, including the MLS 102 VGA, MLS 100 A, MLS 103 SV, and MLS 103 V, exemplifies the company's commitment to excellence in audio-visual integration. These MediaLink Switchers are designed to simplify the management of multiple audio and video sources in classrooms and conference rooms, providing seamless integration and user-friendly operation.

The MLS 102 VGA model focuses on VGA signals, making it a reliable choice for installations that primarily use legacy video sources. It features a simple interface with push-button controls, enabling users to easily switch between two video sources with a single VGA output. This model is ideal for educational environments where older laptops and PCs are still in use.

The MLS 100 A model adds audio capabilities to the mix, offering audio switching along with video. This switcher supports stereo audio signals, allowing educators to present multimedia content effectively. The MLS 100 A simplifies the setup for instructors, enabling them to connect different media sources without complicated wiring or extensive technical knowledge.

The MLS 103 SV and MLS 103 V models elevate functionality with their multi-format switching capabilities. The MLS 103 SV supports both VGA video and stereo audio, while the MLS 103 V is solely focused on video. Both models provide a more comprehensive solution for modern AV requirements. The MLS 103 series employs advanced signal processing technology, ensuring high performance across multiple resolutions and formats.

Additionally, the MLS 103 series incorporates features such as EDID management, which automatically configures the video output to ensure compatibility with a variety of display devices. This eliminates the need for users to worry about the technicalities, enabling a smooth, hassle-free experience.

Scalability is another key characteristic of the MLS series. These devices can be seamlessly integrated with other Extron products, allowing for an expandable AV infrastructure that meets the growing demands of technology in educational and corporate environments.

Durable construction, easy installation, and operation make the MLS series a preferred choice among AV professionals. Whether for a small meeting room or a large lecture hall, Extron's MLS 102 VGA, MLS 100 A, MLS 103 SV, and MLS 103 V models deliver flexibility, reliability, and superior performance, enhancing any audio-visual presentation.