Extron electronics MDA EQ Series User manual

MDA EQ Series Setup Guide

Installation

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

2. (Optional) If desired, mount the MDA EQ on a 9.5, 6, or 3.5 inch deep rack shelf; a

projector mounting pole; or furniture.

3. Connect a composite video or an S-video source device to the Input connector.

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

connectors.

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

6. Set the termination toggle switch:

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

switch to High Z (up).

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

7. Wire the provided power supply as shown below and connect it to

the 2-pole, 3.5 mm captive screw connector.

Power Supply

Output Cord

Orange Captive Screw

Connector

3/16” (5 mm) MAX

SECTION A–A

Ridges

Smooth

A A

Tie Wrap

CAUTION: Always use a power supply provided by Extron for the MDA EQ series. Use of

an unauthorized power supply voids all regulatory compliance certiﬁcation and may

cause damage to the supply and the MDA.

The Extron® MDA EQ Series are compact mini distribution ampliﬁers available with

composite video or S-video and with individual output gain and equalization controls

that compensate for different cable lengths for each output. Each adjustment on the

MDA 4SV EQ model equalizes two outputs. The MDA 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 these

distribution ampliﬁers for operation.

VIDEO DISTRIBUTION CONTROLLER

GAIN EQ

LOOP-THRU

HIGH Z

75 Ohm

CAUTION: The power supply must not be permanently ﬁxed to the building structure or

similar structures.

The power supply must not be located within environmental air handling spaces or

the wall cavity.

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.

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.

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

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

оIf 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 2V EQ and MDA 4V EQ Default Potentiometer Adjustment

1/2

GAINGAIN EQGAIN

GAIN EQ

Y1/2 CY

Figure 2. MDA 4SV EQ Default Potentiometer Adjustment

оIf using long cables, follow these steps to adjust the potentiomenters:

a. Send the Color Bars test signal

to the input, using a video test

generator such as the Extron

VTG 300.

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 b and c for the

rest of the outputs.

MDA EQ Series Setup Guide, cont’d

03 10

Extron USA - West

Headquarters

+800.633.9876

Inside USA / Canada Only

+1.714.491.1500

+1.714.491.1517 FAX

Extron USA - East

+800.633.9876

Inside USA / Canada Only

+1.919.863.1794

+1.919.863.1797 FAX

Extron Europe

+800.3987.6673

Inside Europe Only

+31.33.453.4040

+31.33.453.4050 FAX

Extron Asia

+800.7339.8766

Inside Asia Only

+65.6383.4400

+65.6383.4664 FAX

Extron Japan

+81.3.3511.7655

+81.3.3511.7656 FAX

Extron China

+400.883.1568

Inside China Only

+86.21.3760.1568

+86.21.3760.1566 FAX

Extron Middle East

+971.4.2991800

+971.4.2991880 FAX

Figure 3. Application Example — MDA 4V EQ

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

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