Specifications

Dimension: 7.0”[177.8mm] wide x 1.75”[44.5mm]height(1RU) x 1.25”[31.75mm] deep

Weight: 0.31lbs[140.6g]

Voltage: 12 or 24 VDC Phoenix Combicon Connector

Power: 700 mw Nominal Power Consumption

Video: Female BNC Connectors 75 Ohm Nominal Impedance

Audio: Phoenix Combicon Connectors

Mount: Brushed Aluminum

BTL

Audio/Video Relay Feedback Loop Eliminator

B T L

USER MANUAL

Specifications subject to change without notification. All trademarks and copyrights are the property of their respective owners.

300 Buckelew Avenue Suite 201, Jamesburg, NJ 08831

Voice: (732) 656-9026 Fax: (732) 656-9685 www.auroramultimedia.com

010601

Introduction

The BTL is a stereo audio and video relay feedback loop eliminator.

When in a room with mics. and/or cameras, the possibility of a feedback loop occurs. This happens when the source is recorded but sent out the play side of the deck because the unit is in stop mode or has no tape.

The BTL is specifically designed to stop audio and video feedback loops by having the record side pass through the normally open of the relay and the play side of the normally closed. This technique keeps the play and record side isolated from each other. The BTL is triggered by 12 or

24 VDC based on the jumper setting and indicates record trigger by the red LED. One relay from a control system does the trick to make a feedback free environment.

Features

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Low Noise Ultra Miniature Relays

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BNC Video Connectors

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Removable Balanced/Unbalanced Audio Connectors

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Heavy Duty Aluminum Mounting Plate

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Versatile Mounting Holes for Vertical or Horizontal Installation

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LED Record Indicator

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12 or 24 VDC Power Supply Operation

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Easy to use with Control Systems

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Contact Closure Controlled

Record Audio

Connection

R-Channel

Record Audio

Connection

L-Channel

Record Video

Connection

Output

Record Video

Connection

Input

12 or 24 VDC

Jumper *

Installation

* Warning: When using 24VDC, jumper must be removed first or damage will occur !!!

Control System

Power

Relays

1 2 3 4 5 6 7 8

+ -

12 or 24 VDC Jumper *

Jumper In = 12 VDC

Jumper Out = 24 VDC

From Audio

Source

From Audio

Source

From Video

Source

To Video

Destination

Record Mode

LED Indicator

To Audio

Destination

To Audio

Destination

Play Audio

Connection

L-Channel

Play Audio

Connection

R-Channel

Play Video

Connection

Input

Play Video

Connection

Output

Power

Connection

VCR

In

Audio

Left

Audio

Right

Video

Out