Muxlab Digital Audio Balun User Manual

5450 Cote de Liesse, Montreal
Quebec, Canada, H4P 1A5
Tel.: (514) 905-0588 Fax: (514) 905-0589
Toll Free (N.Am): (877) 689-5228
E-mail: videoease@muxlab.com
URL: www.muxlab.com
VideoEase Digital Audio Balun (500020)

Installation Guide

Introduction

The VideoEase Digital Audio Balun allows a digital audio source to be connected up to 600 feet (183m) away from a digital audio decoder/amplifier via copper unshielded twisted pair (UTP) in a point-to-point scenario. Used in pairs, the Digital Audio Balun allows a Digital Audio source such as a DVD, VCR or satellite receiver to be connected via copper twisted pair to a Digital Audio home theatre system. The Digital Audio Balun connects directly to the digital audio equipment and features screw terminals and built-in cable strain relief for ease of installation and reliable connectivity.
Installation
To install the VideoEase Digital Audio Baluns, perform the following steps:
1. Identify the pin configuration of the baluns. One twisted pair is required.
Although the Digital Audio Balun is not reverse polarity sensitive, however in the event that there may be ground loop problems in a particular installation, it is recommended to ensure straight-through wiring (Ring to Ring, Tip to Tip).
RCA male
Digital Audio Balun (500020) Top View (cover off)
Tip
Ring
Twisted pair cable
1 pair
Ring
Tip
© MuxLab Inc.
2.
The Digital Audio Balun works in pairs. Plug one balun into the digital audio output (coaxial) of the digital audio source.
3. Plug a second balun into the digital audio input (coaxial) of the digital audio
decoder/amplifier at the remote end.
4. Complete the connection between the two baluns, using standard twisted pair cabling techniques as shown below.
Digital Audio Balun (500020)
Digital Audio Source
1-pair twisted pair
Digital Audio
Decoder/Amplifie r
DA Decoder/AmpDVD or VCR
5. Power-on the digital audio equipment. Check to ensure that all audio channels
are being received.

Troubleshooting

The following table describes some of the symptoms, probable causes and possible solutions in respect to the installation of the Digital Audio Balun. If you still cannot diagnose the problem, please call MuxLab Customer Technical Support at 877-689-5228 (toll-free in N.Am) or 514-905-0588 (Intl).
Symptom Probable Causes Possible Solutions
No audio EMI interference. Check that wiring is not too close to
transformers and ballasts.
No audio Distance exceeded Verify cable length between the two
baluns.
No audio Split pair Check if the UTP pairs are split
and correct. Each signal pair must be twisted.
No audio Power-off. Check power supplies of digital
audio equipment.
Missing channels Cabling problem
between the decoder/amp and the audio speakers.
Intermittent static noise on one or more channels.
Distance exceeded or unusual cable attenuation
Check audio speaker cabling.
Check cable distance and cable grade.

Specifications

Environment

Devices
Transmission Bandwidth Maximum Input Insertion Loss Return Loss Common Mode Rejection Max. Distance (UTP) Cable – UTP

Connectors

Pin Configuration

Impedance

Temperature
Enclosure Dimensions Weight Warranty Order Information
Dolby® Digital, Dolby Pro Logic, dts®, LOGIC7®, THX Surround EX™ DVD, VCR, Camcorders, satellite receivers, home theatre, channel processors, amplifiers, D/A converters, MPEG encoders/decoders, switchers and other commercial or consumer audio equipment supporting digital audio. Transparent to the user. DC to 25 MHz
1.0 Vp-p Less than 1 dB per pair over the frequency range Greater than 15 dB over the frequency range Greater than 60 dB @ 10 MHz Category 5 unshielded twisted pair – 600 ft. (183m) 24 gauge or lower solid copper twisted pair wire impedance: 100 ohms at 1 MHz Maximum capacitance: 20 pf/foot. Attenuation: 6.6 dB/1000 ft at 1 MHz Two (2) screw terminals One (1) S/PDIF (RCA) gold-plated male connector Tip-signal, Ring-GND
Input: 75 ohms (RCA) Output: 100 ohms (Screw Terminals). Operating: 0 to 55 C. Storage:-20 to 85 C. Humidity: up to 95% Fire retardant plastic
2.30” x 0.62” x 0.62” (5.8 x 1.6 x 1.6 cm)
1.5 oz (42.5 gms) Lifetime 500020 VideoEase Digital Audio Balun
© MuxLab Inc.
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