Extron DA 6A Setup Guide

Setup Guide — DA AV EQ Series

The Extron ® DA AV EQ series are distribution amplifiers

(DAs) that are available with composite video or S-video plus audio, audio only, and video only. They provide long cable drive capability and individual gain and equalization adjustment for each output pair. The two dual models can each be configured to function as two

DAs.

This guide provides basic instructions for an experienced installer to set up and operate these distribution amplifiers.

Step 1 — Turn off and disconnect all equipment from power source

Step 2 — Mount the unit (optional)

If desired, mount the DA on a 9.5 inches deep or 6 inches deep rack shelf, or on furniture.

Step 3 — Connect video devices (all models except DA 6A)

• Connect video input: Connect a composite video or an S-video source device to the Input connector. If using a DA 12V/6V or a DA 8V/4V in dual mode, connect input devices to the

Input A and Input B connectors.

• Connect video output: Connect one or more video output devices to the composite video or

S-video output connectors.

Step 4 — Set dual mode toggle switch (Dual EQ models only)

Set the toggle switch for dual or single mode as follows:

• Dual mode: Set the toggle switch down to Dual 1x4 for the DA 8V/4V or

Dual 1x6 for the DA 12V/6V, as shown at right. The DA functions as two

1-input, 8- or 12-output DAs.

INPUT A

• Single mode: Set the toggle switch up to 1x8 for the DA 8V/4V or 1x12 for the DA 12V/6V. The DA functions as a 1-input, 8- or 12-output DA with active loop-through.

LOOP-

THRU

INPUT B

Step 5 — Connect monitor for loop-through (optional)

Connect a monitor to the Loop-Thru connector for passive loop-through, if desired.

For DA 12V/6V or DA 8V/4V Dual EQ models: If the DA will not be used in dual mode, connect a monitor to the Input B connector for active loop-through, if desired.

1 x 12

Dual

1 x 6

Step 6 — Set termination toggle switch

For all models except DA 6A, DA 12V/6V, and DA 8V/4V Dual EQ:

INPUT

• If a monitor is connected to the Loop-Thru connector, set the Termination toggle switch up to high Z for passive loop-through, as shown at right.

HIGH Z

• If no monitor is connected, set this switch down to 75 Ohm.

Step 7 — Connect audio inputs

Wire the captive screw or RCA input connectors to an audio source as shown below.

LOOP-THRU

75 Ohm

Tip (+) Tip

Sleeve

Tip

Sleeve

Tip

Ring

Sleeve (s)

Tip

Ring

Unbalanced Input Balanced Input

Sleeve ( )

RCA connector

(Continued on reverse side)

Setup Guide — DA AV EQ Series, cont’d

Step 8 — Connect audio outputs

Connect audio output devices to the RCA or captive screw audio Output connectors as shown below (captive screw) and in Step 7 (RCA).

Tip

Ring

Sleeve(s)

Tip

Ring

Tip

NO Ground Here

Sleeve(s)

Tip

NO Ground Here

Balanced Audio Output

Do not tin the wires!

Unbalanced Audio Output

CAUTION

For unbalanced audio, connect the sleeve(s) to the ground contact. DO NOT connect the sleeve(s) to the negative (–) contacts.

N For advanced audio settings, refer to chapter 2, “Installation and Rear

Panel,” of the DA AV EQ Series User’s Manual.

Step 9 — Power on

Connect power to the DA and to all input and output devices.

Step 10 — Adjust potentiometers for output cable lengths (if needed)

• If using very short output cables , ensure that the potentiometers are in the unity gain position; that is, with the arrow on each potentiometer pointing to the dot beside or above it. If the potentiometers are already in the unity position

(shown in the example for inputs 1 and 2, at right). Do not change them.

If the potentiometers are not in unity gain position, rotate them, using a small screwdriver.

1/2

GAIN EQ

Composite Video

Models

GAIN

Y

1/2

EQ

C

GAIN

S-video Models

• 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 such as the

Extron VTG 300. b. Adjust the Gain potentiometers for output pair 1 and 2 until the signal level at the far end is the same as the input (or the display shows the correct brightness and contrast).

c. Adjust the EQ potentiometer for outputs 1 and 2 so that no overshoot or round front corners appear at the far end on the scope

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

d. Repeat steps b and c for the rest of the outputs.

Application Diagram

The figure at right provides an example of how a DA AV EQ series distribution amplifier may be connected.

DVD

VCR

DA 6SVA EQ

Audio Video

Distribution

Amplifier

Monitor

(Loop-through)

INP

UT

100

-24 0V

0.2

A

-TH

LO

OP

RU

HIG

H Z

Oh

75 m

0 H

50/6 z

800'

Cables

6' Cables

1

2

OU

TP

UT

S

3

4

INP

UT

5

6

L

R

L

1 R

R

2

L

OU

TP

UT

S

L

3

R

L

4

R

DA

6S

VA

EQ

L

5

R

6

R

L

1000'

Cables

100'

Cables

Sound System

Projector

HDTV

Plasma

Displays

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Rev. A

03 10