MuxLab VideoEase User manual

94-000278-C
VideoEase™ Audio-Video Hub (500200)
Installation Guide

©MuxLab Inc. Audio-Video Hub Installation Guide
Page 2
Copyright Notice :
Copyright © 2002 MUXLAB Inc. All rights reserved.
Printed in Canada. No part of this publication may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopy-
ing, recording, or otherwise without prior written permission of the author.

©MuxLab Inc. Audio-Video Hub Installation Guide
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Table of Contents
1. Overview ........................................................................................................................4
1.1. Description........................................................................................................4
1.2.1. Applications............................................................................................5
1.2.2. Benefits ...................................................................................................5
1.2.3. Features...................................................................................................5
2. Technical Specifications ................................................................................................6
3. Installation Procedure ..................................................................................................7
3.1. Installation ........................................................................................................7
3.2. Typical Applications.......................................................................................12
3.3. Cascading Multiple Hubs ...............................................................................13
4. Troubleshooting......................................................................................................15
4.1. Symptoms, Causes and Possible Solutions.....................................................15
4.2. Technical Support Information.......................................................................16
5. Manufacturer’s Limited Warranty...........................................................................17
Notes..................................................................................................................................18

MuxLab Inc. Technical Specifications
Page 4
1.
Overview
1.1. Description
The VideoEase Audio-Video Hub allows up to two (2) baseband video signals and up to
two (2) audio signals to be distributed to up to eight (8) destinations via twisted pair
(UTP) cable for more cost-effective and versatile cabling.
The Audio-Video Hub when used in conjunction with MUXLAB’s line of VideoEase
baluns, allows coaxial cable to be eliminated between the Audio-Video source and the
destinations. For example, the product works with the VideoEase CCTV Balun (500000,
500009), VideoEase Stereo Audio/Video Balun (500001),VideoEase Dual Audio/Video
Balun (500012), S-Video Balun (500016) and S-Video/Audio Balun (500017).
The Audio-Video Hub allows CCTV and audio-video signals to be distributed to multiple
locations via standard twisted pair cabling instead of costly coaxial video cable or audio
cable.
A looping output allows the source input to be distributed to other baseband audio/video
equipment including matrix switchers, multiplexers, VCRs and monitors and other
VideoEase Audio-Video Hubs for greater versatility. The video and audio twisted pairs
are independent of each other and it is not necessary to use all of them in a given appli-
cation. The Audio-Video Hub is designed for point-to-point configurations and further
expansion via cable tapping is not supported.

MuxLab Inc. Technical Specifications
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1.2 Applications, Benefits and Features
1.2.1. Applications
CCTV security and surveillance
Classroom audio/video instruction
Corporate audio/video presentations
Tradeshow demonstration systems
1.2.2. Benefits
Distribute CCTV and audio-video to multiple destinations via twisted pair
Eliminates costly and bulky coax cable
Centralised cabling for greater control
Quicker moves, adds and changes
1.2.3. Features
Supports NTSC and PAL
Up to 2200 feet between the source and destination via Cat 5 twisted pair in color..
Supports up to 2 video and 2 audio channels
Integrates seamlessly with MUXLAB VideoEase baluns
Looping output to cascade to other hubs or audio-video equipment
Rubber stand-offs for desktop placement
2-year warranty

MuxLab Inc. Technical Specifications
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2.
Technical Specifications
Specifications
Environment Close-Circuit TV (CCTV) equipment for security and surveillance; composite baseband
audio/video (ie; NTSC, PAL); S-Video.
Devices CCTV cameras, CCTV monitors, video switchers, video sequencers, multiplexers and
other CCTV equipment. VCR, DVD, video-conferencing and other baseband
audio/video equipment.
Transmission Transparent to the user.
Source Impedance Req’ts Video OUT: 75 ohms Audio OUT: 600 ohms max.
Destination Impedance Req. Video IN: 75 ohms Audio IN: 600 ohms min.
Hub Impedance Video IN: 100 ohm balanced Audio IN: 10 kohms min. balanced
Video OUT: 100 ohms balanced Audio OUT: 600 ohm balanced
3 dB Bandwidth Video: DC to 8 MHz. Audio:50 Hz to 16 kHz
Maximum Differential Input Video: 0.55 Vp-p Audio: 0.50 Vp-p
Maximum Differential Out-
put
Video: 0.55 Vp-p Audio: 0.50 Vp-p
Insertion Loss (differential) Video: 0 dB max. @ 4 MHz
Audio: 1 dB max. @ 1 kHz
Video Return Loss 24 dB minimum
Common Mode Rejection
Input: balanced. Output:
unbalanced
Video: Greater than 40 dB over the frequency range.
Audio: Greater than 60 dB over the frequency range.
Crosstalk Immunity 60 dB minimum over the frequency range
Max. Distance via
Cat 5 Twisted Pair (UTP) *
Composite Video Color: 2200 ft (670m) *
Composite Video B&W: 2500 ft (762m) *
S-Video: 1000 ft (305m) *
*Measured between Source (ie;DVD) and Destination (ie;Monitor) with Hub placed anywhere
between the source and destination
Cable – UTP 24 gauge or lower solid copper twisted pair wire impedance: 100 ohms at 1 MHz. Cat 3
or better.
Connectors Source Input: One (1) RJ45 jack on rear panel
Looping Output: One (1) RJ45 jack on rear panel
Distribution Outputs: Eight (8) RJ45 jack on front panel
RJ45 Pin Configuration
Reverse Polarity Sensitive
Video 1: Ring 7 Tip 8 Audio 1: Ring 1 Tip 2
Video 2: Ring 4 Tip 5 Audio 2: Ring 3 Tip 6
Diagnostics Power LED – Green
Power Supply External AC: 110V and 220/240V
DC: +/- 12VDC, 5W total max.
Power Supply Connector 5-pin DIN; pin 1 GND, pin 2 GND, pin 4 -12V, pin 5 +12V.
Temperature Operating: 0 to 55 C. Storage:-20 to 85 C. Humidity: up to 95% non-condensing
Dimensions 8.5” x 4” x 1.3”
Compliance FCC, CE-EMC Directive 89/336/EEC
Warranty 2 years
Order Information 500200 VideoEase Audio-Video 8-Port Active Hub, 110V
500201 VideoEase Audio-Video 8-Port Active Hub, 220/240V

MuxLab Inc. Troubleshooting
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3.
Installation Procedure
3.1. Installation
Follow the steps listed below to install the Audio-Video Hub :
1. The Audio-Video Hub is polarity sensitive and works in conjunction
with MUXLAB’s VideoEase video baluns. If the Audio-Video Hub
is used with baluns which have a signal polarity opposite to that of the
Audio-Video Hub, then the signal polarity of the cabling between the
hub and the video baluns may need to be reversed. Verify that the pin
configuration of the video baluns match the pin configuration of the
hub. The pin configuration of the hub is conveniently located on the
rear panel.
2. Connect the appropriate MUXLAB video baluns to the audio-video
source and destinations. The Audio-Video Hub supports up to two
video and two audio channels. Therefore, the Audio-Video Hub will
work in conjunction with the CCTV Balun, Stereo Audio/Video
Balun and 2-Way Audio/Video Balun. Prepare the appropriate line
cords to connect the baluns to the twisted pair cabling system in the
building.
3. Place the Audio-Video Hub in its final location.
Before connecting the cables keep the maximum cable lengths in
mind. The final location for the Audio-Video Hub must be within
maximum distance specs of the controller and of each terminal (see
Specifications section). These distances assume that the cable used
conforms to the cable requirements given in the Technical Specifica-
tion section of this guide. Note that every connection is equivalent to
10' of cable and must be included in the maximum cable length cal-
culation. If you are not sure of your cable length it can be estimated
by performing a DC resistance test with a digital ohm meter. 1000
Pin Configuration Table

MuxLab Inc. Troubleshooting
Page 8
feet of 24 AWG cable should give a reading of approximately 26
ohms (52 ohms if you are measuring at one end with the opposite ca-
ble ends shorted).
Computer
Twisted Pair
Drop Side
Figure 1 : Measuring Cable Impedance
The Audio-Video Hub must be kept away from sources of radio-
frequency or electromagnetic radiation :
a) 5" from power lines of 2 kVA or less.
b) 12" from fluorescent lighting & power lines between 2 &
5 kVA.
c) 36" from power lines greater than 5 kVA.
d) 40" from transformers & motors.
Best performances will be achieved using home-run cable. Do not
use flat cable (i.e., cable that is not twisted), even for patching with
short runs. Flat cable acts as an antenna and will pick up nearby ra-
dio-frequency interference.
4. Identify the pin configuration of both the video balun and the Audio-
Video Hub. For example, when using the VideoEase Stereo Audio-
Video Balun (500001), the modular cable must use straight through
polarity.

MuxLab Inc. Troubleshooting
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Model å500000 500001 500012 500016 500017
Signal CCTV
Balun
Stereo Audio-
Video Balun
Dual Audio-
Video Balun
S-Video Balun S-Video/Audio
Balun
Video 1 7&8 7&8 7&8 7&8 luma 7&8 luma
Video 2 N/A N/A 4&5 4&5 chroma 4&5 chroma
Audio 1 N/A 1&2 1&2 1&2
Audio 2 N/A 3&6 3&6 3&6
Figure 2 : MUXLAB Video Balun Pin Configurations
RJ45 Pin Configuration
Video 2: Ring 4 Tip 5
Audio 2: Ring 3 Tip 6
Audio 1: Ring 1 Tip 2
Video 1: Ring 7 Tip 8
Looping OutputInput
NC
+ 12V
GND
-12V
Po w e r
Figure 3 : Audio-Video Hub Back Panel

MuxLab Inc. Troubleshooting
Page 10
Power 4Outputs
Figure 4 : Audio-Video Hub Front Panel
R
TTR
Straight polarity Reverse polarity
5. Plug the Audio-Video Hub into the nearest AC power outlet. The
Power LED should light up and stay on.
18