Extron electronics MDA 4V EQ Manuel utilisateur

IMPORTANT:

Go to www.extron.com for the complete

user guide, installation instructions, and

specifications before connecting the

product to the power source.

MDA 4V EQ • Setup Guide

The Extron MDA 4V EQ is a compact mini distribution amplier available

VIDEO DISTRIBUTION CONTROLLER

GAIN EQ

with composite video and with individual output gain and equalization

controls that compensate for different cable lengths for each output.

The MDA 4V EQ products are also line drivers, able to equalize signals

sent over 1000 feet (300 m) of Extron Mini High Resolution cable.

This guide provides basic instructions for an experienced installer to set

up this distribution ampliers for operation.

Installation

1. Turn off and disconnect all equipment from the power source.

2. If desired, mount the MDA 4V EQ on a standard or 6 inch deep rack shelf, a projector mounting pole, or on furniture (see the

Extron website for mounting options).

3. Connect a composite video source device to the Input connector.

4. Connect one or two video output devices to the composite video

output connectors.

Power Supply

Output Cord

Orange Captive Screw

Connector

0.3”

(7 mm) MAX

SECTION A–A

Ridges

Smooth

Tie Wrap

5. (Optional) Connect a monitor to the Loop-Thru connector for

passive loop-through.

6. Set the termination toggle switch:

• If a monitor is connected to the Loop-Thru connector, set the

switch to High Z (up).

• If no monitor is connected, set the switch to 75 Ohm (down).

7. Wire the provided power supply as shown on the right and connect

it to the 2-pole, 3.5 mm captive screw connector.

ATTENTION:

• Always use a power supply provided by Extron for the MDA EQ series. Use of an unauthorized power supply voids

all regulatory compliance certication and may cause damage to the supply and the MDA.

• Utilisez toujours une source d’alimentation fournie ou recommandée par Extron. L’utilisation d’une source

d’alimentation non autorisée annule toute certication de conformité réglementaire, et peut endommager la source

d’alimentation et l’unité.

• The power supply must not be permanently xed to the building structure or similar structures.

• La source d’alimentation ne devra pas être xée de façon permanente à la structure de bâtiment ou à d’autres

structures similaires.

• Do not place the power supply within environmental air handling spaces or the wall cavity.

• Avant de connecter l’alimentation, veuillez lire attentivement les mises en garde ci-dessous.

• The installation must be in accordance with the applicable provisions of the National Electrical Code ANSI/NFPA 70,

Article 725 and the Canadian Electrical Code, Part 1, Section 16.

• Cette installation doit toujours être conforme aux dispositions applicables du Code américain de l’électricité

(National Electrical Code) ANSI/NFPA 70, article 725, et du Code canadien de l’électricité, partie1, section16.

• The power supply must be located within the same vicinity as the Extron A/V processing equipment in an ordinary

location, Pollution Degree 2, secured to a podium, a desk, or an equipment rack within a dedicated closet.

• La source d’alimentation doit être placée à proximité de l’équipement Extron dans un emplacement ordinaire soumis

à un degré de pollution de catégorie II, solidement xé au rack d’équipement d’une baie technique, d’un pupitre, ou

d’un bureau.

8. Connect power cords to the input and output devices and turn on all equipment.

68-978-50 Rev. B

10 18

All trademarks mentioned are the property of their respective owners.

For information on safety guidelines, regulatory compliances, EMI/EMF compatibility, accessibility, and related topics, see the

Extron Safety and Regulatory Compliance Guide on the Extron website.

9. Adjust the potentiometers for output cable lengths (if needed).

• If using very short output cables, set all potentiometers to the default setting (with the arrow on the potentiometer

pointing to the dot beside it as shown).

GAIN EQ

Figure 1. MDA 4V EQ Default Potentiometer Adjustment

• If using long cables, follow these steps to adjust the potentiometers:

a. Send the Color Bars test signal to the input, using a video test generator.

b. Adjust the Gain potentiometers for output 1 until the signal level at the far end is the same as the input (or the

display shows the desired brightness and contrast).

c. Adjust the EQ potentiometer for output 1 so that no overshoot or round front corners appear at the far end on an

oscilloscope (or you see a sharp picture with no smearing).

d. Repeat steps band c for the rest of the outputs.

MDA 4V EQ

POWER

12V

0.2A MAX

INPUTINPUT

LOOP-THRULOOP-THRU

OUTPUTSOUTPUTS

75 Ohm

Projectors

Local Monitor

Flat Panel

Display

LCD

Projector

Extron

MDA 4V EQ

Distribution

Ampliﬁer

DVD Player

200'

Cable

1,000'

Cable

50' Cable

800'

Cable

Figure 2. MDA 4V EQ Application Drawing

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