VGA and Audio over UTP (Cat5/5e/6)
Transmitter Wallplate
MODEL UVA-WP
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 800-959-6439
FREE technical support, Call 714-641-6607 or fax 714-641-6698
Mail order: Hall Research, 1163 Warner Ave, Tustin, CA 92780
Web site: www.hallresearch.com • E-mail: info@ hallresearch.com
UMA1115, Rev B
Wallplate VGA and Audio on UTP Transmitter
TRADEMARKS USED IN THIS MANUAL
Hall Research, HR, and its logo are trademarks of Hall Research, Inc. Any other
trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.
FCC & CANADIAN DEPARTMENT OF COMMUNICATIONS
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used properly, that is, in strict accordance with the manufacturer’s
instructions, may cause interference to radio communication. It has been designed
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart B of Part 15 of FCC rules, which are intended to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a residential
area is likely to cause interference, in which case the user; at their own expense will
be required to take whatever measures may be necessary to correct the
interference.
This digital apparatus does not exceed the Class A limits for radio noise emission
from digital apparatus set out in the Radio Interference Regulation of the Canadian
Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les
limites applicables aux appareils numériques de la classe A prescrites dans le
Règlement sur le brouillage radioélectrique publié par le ministère des
Communications du Canada
EUROPEAN UNION DECLARATION OF CONFORMITY
This product has been tested and shown to comply with the requirements of the
European EMC directive 89/336/EEC
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Model UVA-WP
Contents
1. Introduction.............................................................................. 3
1.1 General.......................................................................... 3
1.2 Features ........................................................................ 4
2. Installation ............................................................................... 4
2.1 Package Contents .......................................................... 4
2.2 Installation into a Wall, Desk or Podium ............................ 5
2.3 Connecting the Power Supply .......................................... 6
2.4 Connecting the Transmitter to the Receiver....................... 8
2.5 Adjusting Cable Length Compensation ............................. 9
3. Operation .............................................................................. 11
3.1 UTP Cable Recommendations....................................... 11
4. Troubleshooting ..................................................................... 13
4.1 Problem Solving FAQ.................................................... 13
4.2 Calling Hall Research.................................................... 14
4.3 Shipping and Packaging................................................ 14
5. Specifications......................................................................... 15
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Wallplate VGA and Audio on UTP Transmitter
1. Introduction
1.1 General
The Model UVA-WP is a single-gang wall plate that can transmit PC
VGA video or HD analog component video (YPbPr) with audio up to
1,000 feet over a single Cat5/6/6e twisted pair cable.
In most installations for PC video extension, the unit does not require
connection of a power supply (it will draw power from PC video source
through HD15 connector with a VESA compliant VGA cable). This,
together with its shallow depth, makes installations a snap. For
convenience the rear of the unit features a standard RJ45 connector.
In instances where the input video is YPbPr (requires a 3 RCA to
HD15 adapter cable), or if your PC does not provide power on its pin
9 of HD15 connector (as required by VESA standard), then a power
supply will need to be connected to the UVA-WP.
Next to the RJ45 connector on rear of the unit is a 2-position screw
terminal for connection of a power supply if your installation requires
it. The package includes a 6v DC power supply that you can use to
attach to the unit if needed.
At the other end of the Cat5 cable, to convert the signal back to VGA
and Audio, you need a compatible receiver such as a Model URA
receiver. The remote receiver is not included and must be purchased
separately.
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Model UVA-WP
1.2 Features
• Handles resolutions up to 1080p (HD YPbPr) or 1920x1440
(PC VGA) at any refresh rate
• Rugged, Reliable, Compact size fits in tight spaces
• No power supply needed for most installations
• Drive standard CAT5 cables to 1000 feet
• Transmit audio and video signals on one cable
• Standard EDID video resolutions pre-programmed
2. Installation
2.1 Package Contents
The Model UVA-WP comes with the following items
• Wallplate with attached circuit board
• male-male VGA and 3.5mm Audio input cables (approx. 6 ft
long)
• A power supply
o For North America: a 110 VAC input, 6v, 300 ma
output adapter
o For Europe or Australia (parts with -E or -U): a
Universal input , with 6v output power supply
• A 2.5mm loose jack (can be used to attach the power supply
to the unit
• For Europe or Australia (parts with -E or -U): A retrofit, single
gang High Impact PVC electrical box with clamps (Hall
Research Part Number 920-WB-B114R-UPC)
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Wallplate VGA and Audio on UTP Transmitter
2.2 Installation into a Wall, Desk or Podium
• If you will be using a PC or notebook, test the transmitter and
receiver with a short Cat5 cable to ensure there is enough
power from your Video source to power up the transmitter. In
that case you may decide to not hook- up a power supply.
However, Hall Research Technologies recommends that you
hook up a power supply to the transmitter, so that if a source
with no power is encountered, you will still be able to transmit
the signal.
• For new construction, you need a single gang switchbox of
any depth (since the unit is shallow).
For retrofit, or in countries where the size of single gang box
is not the same as the unit, you need to install a switchbox in
to the wall or podium. -E or -U units are shipped with such a
box, or you can order one from Hall Research (920-WBB114R-UPC) or get one from your local hardware store.
Check your local electrical codes to ensure compliance.
Single-gang Retrofit Switchbox
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Model UVA-WP
2.3 Connecting the Power Supply
• There is a 2-position screw terminal on the back of the unit.
You need to connect a 6 volt (could be 6 to 9v DC) power
supply into these terminals.
• In your package there is either of the following 2 power
supplies.
There is also a 2.5 mm Jack included in the package so that
you don’t have to cut the connector at the end of the supply.
• If you decide to cut the connector at the end of the supply,
then you have to connect it to the screw terminals. The power
supply cable has 2 conductors, the + terminal usually has a
white line or white writing on it. That goes into the + terminal
as noted on the printed circuit board of the UVA-WP. Verify
this with a voltmeter before powering the circuit.
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Wallplate VGA and Audio on UTP Transmitter
• If you do not want to cut off the connector on the end of the
power supply, then use the enclosed jack and solder a pair of
wires to it to extend it and connect those wires to the UVAWP.
• Using the supplied 2.5mm jack also gives you the ability to
place the power supply outside of the wall. You can use a
separate single gang plate and install the supplied jack on it
and wire it to the terminals on the back of the UVA-WP.
Electrical Safety Note
Since the DC supply to the unit is only 6 volts with minimal current requirements, the product
qualifies as a Class 2 low-voltage device, and you are not required to run the DC cables in a
conduit. However if you will be installing the power supply in the wall or ceiling, since it has to
plug in to AC, you need an electrical junction box for it, and the AC line that brings high-voltage to
the junction-box should follow the electrical code for your specific installation. Always check your
local electrical codes to ensure compliance.
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Model UVA-WP
2.4 Connecting the Transmitter to the Receiver
The UTP RJ45 wiring follows the standard EIA/TIA568B (shown
below)
NOTICE
Do not connect this unit to any LAN device such as network cards or hubs as this may damage
the UVA/URA and/or the LAN device. Use EIA/TIA 568B standard straight-through patch wiring as
shown below. Do not use crossover cables.
EIA/TIA 568B WIRING STANDARD
PIN Wire Color
1 White w/ Orange Stripe
2 Orange
3 White w/Green Stripe
4 Blue
5 White w/Blue Stripe
6 Green
7 White w/Brown Stripe
8 Brown
We recommend that you use zero-skew Cat5 cable to minimize color
skew particularly if the length of the cable is over 200 feet. See
section 3.1 UTP Cable Recommendations for more information
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Wallplate VGA and Audio on UTP Transmitter
Adj
Connect the remote monitor and speakers to the URA or another
compatible receiver unit (as shown above) and attach the power
supply to the receiver.
CAUTION
Before plugging in the remote monitor, verify that the AC line is properly wired and that a
protective ground (green) wire is established with NO potential difference between both the
sender and receiver locations. The splitter can tolerate up to 5 vPeak-Peak ground potential
between the two locations. Failure to ensure good grounding can result in erratic operation and
possible shock hazards or damage to your equipment.
2.5 Adjusting Cable Length Compensation
Older Versions
Compensation
ustment
Newer Versions
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Model UVA-WP
There is a potentiometer (pot) or pushbuttons on the Model URA
receiver depending on the products revision. Turning the pot CW
increases the compensation. Use a small screwdriver and starting
from fully CCW; slowly turn the pot CW until the image is perfectly
clear. Fully CCW corresponds to no compensation (recommended for
lengths of 100 ft or less), and fully CW corresponds to 1000 feet.
Newer models use pushbuttons to adjust the compensation, follow the
directions supplied with that model. Be careful not to overcompensate the video image.
The video quality at the remote station depends on:
(1) The length of the CAT5 cable
(2) The video resolution setting
(3) The video refresh rate setting
In general, at low and mid resolutions, excellent image reproduction is
provided at up to 1000 feet. At high resolution and refresh rates
perfect image reproduction can be achieved at shorter distances (see
table 2.1 below). Using longer cables or higher resolution rates will
still produce an image, but the reproduction quality will be reduced.
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Refresh Rate
60 Hz 75 Hz 85 Hz
800x600 1000 ft 1000 ft 1000 ft
1024x768 1000 ft 800 ft 750 ft
1280x1024 750 ft 650 ft 600 ft
Resolution
1600x1200 750 ft 600 ft 500 ft
1920x1440 750 ft 750 ft 500 ft
Table 2.1
Maximum Recommended Cable Lengths
Wallplate VGA and Audio on UTP Transmitter
3. Operation
3.1 UTP Cable Recommendations
UTP cables have 4 twisted pairs inside. The UVA/URA video
transmission on UTP uses 3 individual pairs for each color (Red,
Green, & Blue). As shown above, a characteristic of Category-5/5e/6
cable is that the pairs of wires are twisted at different rates. Therefore,
for a given length of Cat-5 cable the total length of a particular pair
could be longer than others. Since the signals travel in the cable at a
fixed speed, the arrival times of signals can be skewed in a long cable
(those that have to travel farther arrive later and the corresponding
color shifts to the right).
This is seen on the monitor as separation, or lack of convergence in
colors. For example a vertical white line on the screen may look to
have a red tinge on the left edge and blue tinge on the right edge.
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Model UVA-WP
This effect gets worse at high resolutions, high refresh rates, long
cables (in excess of 200 feet), and depends on the cable construction
itself. Hall Research highly recommends the use of UTP cables
specifically constructed for video transmission. In these cables all of
the twisted pairs are the same length and are available from several
sources including Hall Research (part numbers shown below).
Zero-Skew CAT5 Cable for use with Hall Research CAT5 Products
PART NUMBER
CUTP-Z-1000-BLK 1000 ft.
Zero-Skew CAT5 cable. Bulk spool of 1000 ft
CUTP-ZP-1000-BLK 1000 ft.
Zero-Skew CAT5 cable. Bulk spool of 1000 ft Plenum Rated
If for some reason you are unable to use zero-skew Cat5 cable and
have a long cable run, and will be displaying high-resolution PC image
(such as a spread-sheet with small fonts), then you may need to
purchase an Model SKU-RGB skew corrector or a Model URA-SKU
which will re-align the RGB components of the video signal at the
remote (or local) end.
Model SKU-RGB
Model URA-SKU
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Wallplate VGA and Audio on UTP Transmitter
4. Troubleshooting
4.1 Problem Solving FAQ
1. Fuzzy, blurry, or ghosting image at remote location
If you have a stable image but it looks somewhat blurry (edges are not sharp), make
sure that you have adjusted the receiver unit’s compensation pot correctly. Also
check table 2.1 to see that you have not exceeded the maximum recommended
cable length. If you still have a fuzzy image, try reducing the refresh rate and/or
resolution of the PC.
You can point your browser to
http://www.hallresearch.com/files/articles/skew_adjust.gif
you to adjust the compensation and also evaluate the amount of color skew in your
setup.
2. Image exhibits steady or rolling horizontal color “hum” bars
This is usually an indication of improper grounding either at the sending end, the
receiving end, or both. Verify that the AC line is properly wired and that a protective
ground (green) wire is established with NO
sender and receiver locations. The UTP splitter can handle up to 5 v peak-to-peak
of ground noise between the two locations, but no more.
potential difference between both the
for an image that allows
3. Shaking image or periodically blanking monitor
Inherently, balanced signal transmission over twisted pair offers good immunity to
EMI coupled noise from other external sources. However, a strong electromagnetic
noise field can cause instability in the signal.
Usual sources are high power AC lines or data and/or control cables that run
adjacent to and parallel with a substantial length of the CAT5 cable. To eliminate
this, either place a distance between the CAT5 cables from the splitter and the
interfering source, or use shielded twisted pair (STP) CAT5 cables.
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Model UVA-WP
4. Poor audio quality at the receiving end
Only use powered speakers with the receiver. It is also good practice
to set the audio level (volume) output of the PC about 1/2 to 2/3 from
the maximum and use the volume knob of the speakers to adjust the
volume to the desired level. A low volume signal output from the PC
reduces the signal-to-noise (S/N) ratio, whereas too high output
amplitude can cause saturation and clipping to occur.
4.2 Calling Hall Research
If you determine that your sender is malfunctioning, do not attempt to
repair the unit. The unit contains no user serviceable parts. Opening
the unit without written authorization from Hall Research will void the
warranty.
Contact the Hall Research technical support department at 714-641-
6607. Before you do, make a record of the history of the problem. We
will be able to provide more efficient and accurate assistance if you
have a complete description, including:
• Nature and duration of the problem.
• Components involved in the problem – that is, what type of
cable, makes and models of computers and monitors, etc.
• Results of any testing you’ve already done.
4.3 Shipping and Packaging
If you need to transport or ship your wallplate, package it carefully (we
recommend that you use the original container), and before you ship
the unit back to Hall Research for repair or return, contact us to get a
Return Material Authorization (RMA) number.
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Wallplate VGA and Audio on UTP Transmitter
5. Specifications
Supported
Video Types VGA through UXGA, RGBS, or RGB
Can also transmit Composite Video (CV), S-Video (Y/C), and
Component Video (Y, Pb, Pr) on pins 1, 2, and 3 of the HD15 VGA
connector (adaptor cable will be needed)
Resolutions &
Refresh Rates Up to 1920 x 1440 non-interlaced at up to 85 Hz. Or YPbPr up to 1080p
Bandwidth Video: DC to 250 MHz, Audio: 20 Hz to 10 KHz
Video Level 0.7 volts peak-to-peak
Audio
Transmission Line-level mono-with simulated stereo output
Maximum
Distance Up to 1000 ft. (305 meters) – See table 2.1 for details
Compliance CE; FCC Part 15 Subpart B Class A, IC Class
Maximum
Altitude 10,000 ft. (3048 m)
Temperature
Tolerance Operating: 32 to 122°F (0 to 50°C);
Storage: –40 to +185°F (–40 to +85°C)
Humidity Up to 95% non-condensing
MTBF 100,000 hours (calculated estimate)
Power Self powered form Standard VGA VESA compliant output, or from
utility-power (mains) outlet, through included external power adapters.
Output Voltage: 6 DC Current requirement is approximately 0.1 A
Size & Weight 2.75" W X 4.5" L X 1" D - 0.5 Lb
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Designed and Made in the USA
© Copyright 2009. Hall Research, Inc. All rights reserved.
1163 Warner Ave. Tustin, CA USA Ph: (714)641-6607, Fax (714)641-6698
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