Installation, cont’d

Pin

RS-232 function

Description

Contact closure

1

–

Input 1

Input 1

2

Tx

Transmit data

–

3

Rx

Receive data

–

4

–

Input 2

Input 2

5

Gnd

Signal ground

–

6

–

Input 3

Input 3

7

–

Input 4

Input 4

8

–

Input 5

Input 5

9

–

Input 6

Input 6

 

 

 

 

5 1

96

DB9 Pin Locations

Female

•For a stand-alone MLS switcher, connect a cable from the host computer or a third party control system to this 9-pin D connector to set up and remotely control the switcher. Alternatively, connect a contact closure keypad to this connector for remote control of input selection.

•For an MLS switcher slaved to an MLC controller, connect a cable from the MLC’s MLS/Power port to the switcher’s MLC/IR connector (not to the 9-pinRS-232 port). Once the system has been cabled and set up via the Windows-based software, the MLC or a host computer communicat- ing through the MLC can be used to remotely control the switcher. Refer to chapter four of the MLC 206 User’s Manual and the MediaLink Control Program help file for details on configuring an MLC-MLS system.

CAUTION

If the switcher is connected to an MLC 206 controller via the MLC/IR port, do not connect an RS-232 device to the MLS’s 9-pin RS-232/Contact Closure port. Conflicts between RS-232 signals received from both ports could cause system disruptions.

When an MLC 206 is connected to the MLC/IR port, a contact closure device may be attached to the 9-pin connector.

Setting the -6dB Jumpers

In the MLS switchers, when audio signals are converted from an unbalanced input to a balanced output, an additional +6dB gain is applied to the output signal. To remove the +6dB gain from the balanced output or to apply a 6dB attenuation to unbalanced output, jumper headers have been applied to pins inside the switcher. The jumper headers can be removed if you would like to restore the +6dB gain. The -6dB attenuation can be set separately for the left and right audio channels by removing one of the jumper headers.

Input signal

Output signal

Gain/attenuation

Gain/attenuation

 

 

with jumpers

without jumpers

 

 

 

 

Unbalanced

Unbalanced

-6dB

0dB

 

 

 

 

Unbalanced

Balanced

0dB

+6dB

Balanced

Unbalanced

-6dB

0dB

 

 

 

 

Balanced

Balanced

0dB

+6dB

 

 

 

 

CAUTION

Changes to settings inside the unit must be performed by authorized service personnel only.

Follow these steps to set the -6dB jumpers in any MediaLink Switcher.

1.Disconnect the AC power cord from the MLS to remove power from the unit.

To prevent electric shock, always unplug the MLS switcher from the AC power source before opening the enclosure.

2-12 MediaLink Switchers • Installation

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Extron electronic MLS 506MA, MLS 506SA, MLS 306 manual Setting the -6dB Jumpers
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MLS 306, MLS 506MA, MLS 506, MLS 506SA specifications

Extron Electronics, a leading provider of AV control and signal distribution solutions, offers a range of versatile and user-friendly products. Among these, the MLS 306, MLS 506SA, MLS 506MA, and MLS 506 stand out as robust multimedia learning solutions designed to meet the diverse needs of educational environments.

The MLS 306 is particularly designed for smaller classrooms, providing essential AV capabilities in a compact format. It features user-friendly control capabilities that allow teachers to easily manage presentations and multimedia content with minimal technical know-how. The MLS 306 includes multiple input options, supporting various devices such as computers, document cameras, and DVD players. This model emphasizes efficiency and practicality, making it an ideal choice for contemporary educational settings.

For larger classrooms or comprehensive AV setups, the MLS 506 series comes into play. The MLS 506SA (Simple AV) model is tailored for straightforward AV applications, featuring intuitive control interfaces that allow users to easily switch between sources and manage audio and video output. This model ensures seamless integration with other AV equipment, providing a user-friendly experience ideal for instructors focused on effective teaching.

In contrast, the MLS 506MA (Media AV) version expands capabilities for more complex multimedia environments, supporting additional inputs and outputs for advanced AV systems. Its advanced functionality includes the ability to control lighting and other environmental factors, enhancing the learning experience by creating an optimal classroom setting. With customizable presets, educators can quickly adapt the environment for various activities.

The standard MLS 506 model serves as a comprehensive solution, offering a blend of advanced control and connectivity features. This model stands out for its integration of Extron’s industry-leading technologies, including GlobalViewer Enterprise software, allowing for remote monitoring and management of AV systems over the network. This capability is particularly beneficial for IT administrators managing multiple classroom environments.

All models in the MLS series feature robust reliability and are built with Extron’s commitment to high-quality design. Moreover, they include user-friendly interfaces, ensuring that both educators and students can focus on learning without being hindered by complicated technology. Collectively, the Extron MLS 306, MLS 506SA, MLS 506MA, and MLS 506 represent a significant advancement in educational technology, bridging the gap between teaching and technology for enhanced learning experiences.
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