Extron electronics MDA 4V EQ User manual

MDA 4V EQ • USER GUIDE

Introduction

About this Manual

This manual provides information on the Extron MDA 4V EQ video distribution ampliﬁer and discusses how to install and

operate them.

About the MDA 4V EQ Mini Distribution Ampliﬁer

The Extron MDA 4V EQ are compact composite video mini distribution ampliﬁer with individual output gain and

equalization controls that compensate for different cable lengths for each output. The MDA 4V EQ is also a line driver,

able to handle 1000 feet of Extron Mini HR cable.

MDA 4V EQ — One input, four outputs, composite video with equalization and gain controls for each output

Features

• Input: One female BNC connector

• Output: Four female BNC connectors and a passive loop-through

• 150 MHz (-3 dB) video bandwidth, fully loaded

• Variable gain and EQ adjustments

• Independent gain and EQ control per output

• Video loop-through

• 1U, quarter rack width metal enclosure

• External Extron Everlast™ power supply included — Provides worldwide power compatibility with high-demonstrated

reliability and low power consumption

Installation and Operation

Mounting the MDA 4V EQ

The MDA 4V EQ mini distribution ampliﬁer can be set on a table or mounted on a rack shelf, see the accessory options at

www.extron.com

Tabletop Use

Four self-adhesive rubber feet are included with the MDA EQ. For tabletop use, attach one foot at each corner of the

bottom side of the unit and place the unit in the desired location.

MDA 4V EQ • USER GUIDE (Continued)

Rack Mounting

For optional rack mounting, mount the MDA EQ on one of the rack shelves or projector mounting brackets listed above.

On the standard 9.5 inches deep rack shelves, the unit can be mounted in one of four locations to the rear of the rack or

in one of four locations to the front of the rack.

1. If rubber feet are installed on the bottom of the MDA, remove them.

2. Mount the MDA EQ on the rack shelf, using two 4-40 x 3/16” screws in opposite (diagonal) corners to secure the unit

to the shelf.

3. Install blank panels or other units on the rack shelf.

Use 2 mounting holes on

opposite corners.

(2) 4-40 x 3/16"

Screws

1U Universal Rack Shelf

Both front false faceplates

use 2 screws.

QuarterRackStandardShelf

1/4 Rack Width Front False

Faceplate

1/2 Rack Width Front False

Faceplate

6" Deep Rack Shelf

Front false

faceplate

uses 2

screws.

1/2 Rack Width Front False

Faceplate

Use 2 mounting holes on

opposite corners.

(2) 4-40 x 3/16"

Screws

Figure 1. Mounting an MDA 4V EQ on a

Standard Rack Shelf

Figure 2. Mounting an MDA 4V EQ on a

6-inch Rack Shelf

Furniture Mounting

To furniture-mount the MDA 4V EQ, use the optional mini under-desk mounting kit, as follows.

QuarterRackUnderdeskMounting

Figure 3.Preparing the MDA 4V EQ for Under-desk Mounting

1. If rubber feet were previously attached to the bottom of the unit, remove them.

2. Attach the mounting brackets to the MDA EQ with the provided machine screws as shown in the previous ﬁgure.

3. Hold the unit with the attached brackets against the underside of the table or other furniture. On the mounting

surface, mark the location of the bracket’s screw holes.

4. Drill 3/32” (2 mm) diameter pilot holes, ¼” (6.3 mm) deep in the mounting surface at the marked screw locations.

5. Insert #8 wood screws into the four pilot holes. Tighten each screw into the mounting surface until slightly less than

¼” of the screw head protrudes.

6. Align the mounting screws with the slots in the brackets and place the unit against the surface, with the screws

through the bracket slots.

7. Slide the unit slightly forward or back, then tighten all four screws to secure it in place.

Rear Panel Features and Cabling

The following ﬁgures shows the back panel conﬁgurations of the MDA 4V EQ model.

MDA 4V EQ

POWER

12V

0.2A MAX

INPUT

LOOP-THRU

OUTPUTS

HIGH Z

IN 1

75 Ohm

331122

1Power supply connector

2Passive Loop-Thru connector

3Toggle switch

4Output connectors, composite video

5Input connector, composite video

Figure 4.MDA 4V EQ Rear Panel

1Power supply connector — Plug the external 12 VDC power supply into this 2-pin, 3.5 mm captive screw

connector. The power supply is included with the unit.

NOTE: The power connector on the rear panel is orange; however, the plug for the power cord may be either

orange or blue. Either color plug can be connected to the rear panel receptacle.

2Passive Loop-Thru connector — Connect a monitor (optional) to this female BNC connector.

3Toggle switch — Set this switch to HIGH Z if a monitor is plugged into the Passive Loop Thru connector. Setting

this switch to 75 OHM simulates a monitor when none is attached to the Loop Thru connector.

4Output connectors, composite video — Connect up to four MDA 4V EQ composite video monitors to these BNC

connectors.

5Input connector, composite video — Connect a composite video input source to this BNC connector.

Wiring the Connector

WARNING: The two power cord wires must be kept separate while the power supply is plugged in. Remove power

before wiring.

AVERTISSEMENT : Les deux cordons d’alimentation doivent être tenus à l’écart l’un de l’autre quand

l’alimentation est branchée. Couper l’alimentation avant de faire l’installation électrique.

1. Cut the DC output cord to the length needed.

2. Strip the jacket to expose 0.2 inch (5 mm) of the conductors for the blue captive screw plug, or 0.3 inch (7 mm) for

the orange plug.

ATTENTION: The length of the exposed wires in the stripping process is critical. The ideal length is 3/16 inches

(5 mm). Any longer and the exposed wires may touch, causing a short circuit between them. Any shorter and

the wires can be easily pulled out even if tightly fastened by the captive screws.

ATTENTION : La longueur des câbles exposés est primordiale lorsque l’on entreprend de les dénuder. La

longueur idéale est de 5 mm (3/16 inches). S’ils sont un peu plus longs, les câbles exposés pourraient se

toucher et provoquer un court circuit. S’ils sont un peu plus courts, ils pourraient sortir, même s’ils sont

attachés par les vis captives.

NOTE: Stripping the wires to expose less than the recommended amount causes them to slide out of the

connector too easily, even if they are tightly pinched by the captive screws.

3. Slide the leads into the supplied captive screw plug and lock them, using an Extron Tweeker (small screwdriver).

4. Use the supplied tie-wrap to strap the power cord to the extended tail of the connector.

5. To verify the power cord’s polarity before connecting it, plug in the power supply with no load and check the output

with a voltmeter.

MDA 4V EQ • USER GUIDE (Continued)

ATTENTION:

• The installation must always be in accordance with the applicable provisions of 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 shall not be permanently ﬁxed to building structure or similar structure.

• La source d’alimentation ne devra pas être ﬁxée de façon permanente à une structure de bâtiment ou à d’autres

structures similaires.

• Power over Ethernet (PoE) is intended for indoor use only. It is to be connected only to networks or circuits that

are not routed to the outside plant or building.

• L’alimentation via Ethernet (PoE) est destinée à une utilisation en intérieur uniquement. Elle doit être connectée

seulement à des réseaux ou des circuits qui ne sont pas routésau réseau ou au bâtiment extérieur.

• Unless otherwise stated, the AC/DC adapters are not suitable for use in air handling spaces or in wall cavities.

The power supply is to be located within the same vicinity as the Extron AV processing equipment in an ordinary

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

• Sauf mention contraire, les adaptateurs AC/DC ne sont pas appropriés pour une utilisation dans les espaces

d’aération ou dans les cavités murales. La sourced’alimentation doit être située à proximité de l’équipement de

traitement audiovisueldans un endroit ordinaire, avec un degré 2 de pollution, ﬁxé à un équipement de rack à

l’intérieur d’un placard, d’une estrade, ou d’un bureau.

• Always use a power supply provided by or speciﬁed by Extron. Use of an unauthorized power supply voids all

regulatory compliance certiﬁcation and may cause damage to the supply and the end product.

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

d’alimentation non autorisée annule toute conformité réglementaire et peut endommager la source

d’alimentation ainsi que le produit ﬁnal.

• Do not tin the wire leads before installing into the connector. Tinned wires are not as secure in the connector and

could be pulled out. They may also break after being bent several times.

• Ne pas étamer les conducteurs avant de les insérer dans le connecteur. Les câbles étamés ne sont pas aussi

bien ﬁxés dans le connecteur et pourraient être retirés. Ils peuvent aussi se casser après avoir été pliés plusieurs

fois.

• Extron power supplies are certiﬁed to UL/CSA 60950-1 and are classiﬁed as LPS (Limited Power Source). Use

of a non-LPS or unlisted power supply will void all regulatory compliance certiﬁcation.

• Les sources d’alimentation Extron sont qualiﬁées UL/CSA 60950-1 et sont classées LPS (Limited Power

Source). L’utilisation d’une source d’alimentation non-listéeou non-listée LPS annulera toute certiﬁcation de

conformité réglementaire.

The ﬁgure below shows how to wire the connector.

Power Supply

Output Cable

Orange Captive Screw

Connector

0.3” (7 mm) MAX

Black Wire

White Wire

Power Supply

Output Cord

Orange Captive Screw

Connector

0.3” (7 mm) MA

SECTION A–A

Ridges

Smooth

Tie Wrap

Figure 5.Power Connector Wiring

NOTE: Your MDA may have shipped with a blue captive screw plug. The blue connector does not have the extended

tail or the included tie-wrap.

Front Panel Features and Operation

The following shows the front panel conﬁgurations of the MDA 4V EQ.

VIDEO DISTRIBUTION CONTROLLER

GAIN EQ

1111222222 22

Figure 6.MDA 4V EQ Front Panel

1Power indicator LED — This LED, when lit, indicates that the MDA EQ is receiving power.

2Gain and Equalization (EQ) potentiometers — One set for each output. Use a small screwdriver to rotate these

potentiometers to adjust the gain and equalization for optimization of the image over the output cable.

68-978-50 Rev. C

09 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.

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