VGA and Audio Splitters and Receivers for
transmission on Twisted Pair Cable
(Cat5/5e/6 or Zero-Skew UTP)
MODEL UVA-2
MODEL URA
MODEL UUVVAA--22 UTP VGA/AUDIO 2-PORT SENDER
MODEL UUVVAA--44 UTP VGA/AUDIO 4-PORT SENDER
MODEL UUVVAA--88 UTP VGA/AUDIO 8-PORT SENDER
MODEL UUVVAA--2244 UTP VGA/AUDIO 24-PORT SENDER
MODEL UURRAA UTP VGA/AUDIO RECEIVER (Standard)
MODEL UURRAA--XX22 UTP RECEIVER with 2 VGA & 2 AUDIO OUTPUTS
MODEL UURRAA--VVOOLL UTP RECEIVER with VOLUME CONTROL & AMPLIFIED AUDIO
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 Inc., 1163 Warner Ave, Tustin, CA 92780
Web site: www.hallresearch.com • E-mail: info@ hallresearch.com
MODEL UVA-4
MODEL UVA-24
OUTPUT
MODEL UVA-8
MODEL URA-X2
UMA1075, Rev D
Compact CAT5 Audio/Video Splitter and Receive
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TRADEMARKS USED IN THIS MANUAL
Hall Research, HR, and 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 there 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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Compact CAT5 Audio/Video Splitters and Receiver
Contents
1. Introduction ...........................................................................................3
1.1 General ...........................................................................................3
1.2 Features...........................................................................................4
2. Installation .............................................................................................5
3. Configuration & Operation ...................................................................6
3.1 Sender....................................................................................6
3.2 Receiver.................................................................................7
3.2.1 Adjusting the video quality for long cable runs....................7
UTP Cable Recommendations .............................................................8
3.2.3 Volume Control (applies to Model URA-VOL only)...........9
3.2.4 The Model URA-X2..............................................................9
4. Troubleshooting.....................................................................................9
4.1 Problem Solving FAQ...........................................................9
4.2 Calling Hall Research .........................................................11
4.3 Shipping and Packaging ......................................................11
5. Specifications ......................................................................................12
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Compact CAT5 Audio/Video Splitter and Receive
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1. Introduction
1.1 General
This User’s Manual covers both the splitters (senders) and the Remote
Receivers. The splitters can be any of the following models: UVA-2, UVA-4,
UVA-8, or UVA-24. For these units, the number after the dash represents the
quantity of RJ45 outputs.
The basic receiver unit which works with any of the splitters is Model URA.
There also some variations of the basic receiver such as one that has 2 sets of
Video and audio outputs (Model URA-X2), or one with powered audio output and
volume control (URA-VOL).
The splitters (senders) convert a PCs VGA and audio signals into a format that
can be transmitted using a single inexpensive and commonly available
Unshielded Twisted Pair (UTP) cable with RJ45 connectors. Both UTP and STP
(shielded) cables can be used. In addition you can use Cat5, 5e, 6, or higher.
However, for runs of over 250 feet, Hall Research recommends using “Skewfree” or “Zero-skew” Cat5 cables for best performance. The senders also have
local buffered loop-thru outputs for the VGA and audio for connection to local
monitor or expansion.
At the receiving (remote) end, a receiver Model URA (sold separately) is used to
convert the UTP signal back to VGA and audio.
These products are housed in compact shielded enclosures and include
connectors for a local monitor and speakers as well as multiple RJ45 connectors
for connection to remote monitors.
Included with the devices are: a small power supply. The senders also come
with short video and audio cables for connection to the PC VGA and sound
card’s outputs.
The RJ45 outputs on the Splitters can drive CAT5 LAN cables to 1000 feet (305
meters) with little to no degradation of video quality depending on resolution of
the VGA signal (see table 3.2). The receiver can compensate for signal losses in
long cable runs.
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Compact CAT5 Audio/Video Splitters and Receiver
1.2 Features
• Support for local monitor and speaker at sending end
• Handles resolutions up to 1920x1200 at any refresh rate
• Rugged, Reliable, Compact size
• No software required
• Drive standard CAT5 cables to 1000 feet
• Transmit audio and video signals on one cable
• Easily expand Splitters by daisy-chaining the local in/out ports
• Adjustable cable length compensation at each URA receiver
Figure 2.1
Local
Monitor
and
Speaker
UVA-X
VGA &
Audio
Figure 2.3
CAT5
CAT5
Figure 2.2
Remote Monitors &
Speakers
URA
URA
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Compact CAT5 Audio/Video Splitter and Receive
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j
t
2. Installation
1. Connect the VGA IN and AUDIO IN connectors of the UVA-x to the
computer's video and speaker ports using the supplied cables (see figures
2.1 and 2.2).
2. Connect the local monitor and speakers to the device's VGA OUT and
AUDIO OUT connectors respectively. (see Figure 2.3)
To expand the number of outputs, use these ports to daisy chain to
another UVA-x units VGA and audio inputs. Connect the local
monitor and speakers to the last unit in the chain.
3. Connect the included power supply to the power input connector on the
unit.
4. Using Category-5 or higher UTP cable connect one or more URA
receivers to the sender’s RJ45 outputs.
5. Connect the remote monitor and speakers to the receiver unit and attach
the power supply to the receiver
Figure 2.4
NOTE
Compensation
ustmen
Ad
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Compact CAT5 Audio/Video Splitters and Receiver
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 v peak-to-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.
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.
CAUTION
NOTICE
3. Configuration & Operation
3.1 Sender
At the sending end the video signal from the PC is fully terminated and buffered
for the local video output connector. This means that terminating or plugging a
local monitor is not necessary and this connector can be left open.
If a local monitor is plugged in, the plug-and-play ID information (DDC) of the
monitor is passed to the PC.
The stereo audio input is passed through to the local audio output connector and
the audio integrity is fully preserved. The transmitted audio in the CAT5 cable to
the remote receiver is monaural. The audio output on the standard receiver is
“line-level” (powered speakers are required). The Model URA-VOL provides
amplified audio output in addition to the line-level output for driving passive
speakers directly.
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Compact CAT5 Audio/Video Splitter and Receive
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3.2 Receiver
Several receiver types are available (URA-x). All Receivers have a single
COMPENSATION potentiometer (pot) adjustment to recover high frequency
signal loss for long runs of the cable.
The Model URA-X2 has 2 identical VGA outputs and 2 Audio outputs. It acts as
if a standard URA was followed by a video and audio splitter.
The URA-VOL provides volume level adjustment (section 3.2.1).
3.2.1 Adjusting the video quality for long cable runs
Please refer to Figure 2.4 for the location of the compensation pot. Turning the
pot CW increases the compensation. Use a small screwdriver and starting from
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. Be careful not to over-compensate the
video image.
The video quality at the remote station depends on: (1) the length of the CAT5
cable, (2) video resolution setting, and (3) 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 3.1 below). Using
longer cables or higher resolution rates will still produce an image, but the
reproduction quality will be reduced.
Table 3.1
Maximum Recommended
Cable Lengths
800x600 1000 ft 1000 ft 1000 ft
1024x768 1000 ft 800 ft 750 ft
1280x1024 750 ft 650 ft 600 ft
Resolution
1600x1200 650 ft 600 ft 500 ft
60 Hz 75 Hz 85 Hz
Refresh Rate
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Compact CAT5 Audio/Video Splitters and Receiver
UTP Cable Recommendations
RED
GREEN
Figure 3.1
RED
GREEN
BLUE
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 in
figure 3.1 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.
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 the all the twisted pairs are the same length. They
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
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Compact CAT5 Audio/Video Splitter and Receive
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If you are going to use commercial grade UTP cable, then we recommend using
Cat5 or Cat5e rather than Cat6, since the twist ratio match is better in Cat5
cable.
3.2.3 Volume Control (applies to Model URA-VOL only)
On this receiver 2 audio outputs are available, "AUDIO OUT” (line level) and
"AUX" (amplified)
Line-Level
When using the "AUX" (amplified) audio output you can adjust the volume using
the recessed volume control pot. A small flat blade screwdriver will be required
to make the adjustment.
Figure 3.2 – Front and rear panels of URA-VOL
Volume
Amplified
3.2.4 The Model URA-X2
This receiver is identical to the standard URA with
the exception that it has 2 VGA outputs and 2
audio outputs. Both outputs show the identical
image.
4. Troubleshooting
Figure 3.3 –Front
& rear of URA-X2
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 3.1 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.
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Compact CAT5 Audio/Video Splitters and Receiver
You can point your browser to http://www.hallresearch.com/skew.htm for an
image that allows you to adjust the compensation and also evaluate the amount
of color skew in your setup. If you determine that you have excessive color
skew, then you must either consider using Zero-Skew UTP cable, or if that is not
possible, use a secondary device whose job is to correct the color skew (please
contact Hall Research for details).
Your splitter has multiple RJ45 output connectors. When a long CAT5 cable is
plugged in any of the outputs, the unit expects a receiver unit at the far end for
proper termination. Therefore unplug the un-terminated CAT5 cables from the
splitter unit.
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 potential difference
between both the 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.
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.
4. The PC does not recognize a Plug-and-Play monitor
If the PCs Operating System is setup to detect a plug-and-play monitor (usually
in Display Properties Advanced Settings), it may have trouble finding a monitor if
no local monitor is hooked up to the splitter. Only the ID information of the local
monitor is passed to the PC. If the PC does not produce an image due to this,
either connect a monitor to the local VGA output port, or disable the plug-andplay monitor detection in the PCs operating system.
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Compact CAT5 Audio/Video Splitter and Receive
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5. Poor audio quality at the receiving end
Only use powered speakers with the splitter and receivers. 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-tonoise (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 splitter is malfunctioning, do not attempt to repair the
unit. Contact 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:
4.3 Shipping and Packaging
If you need to transport or ship your Splitter: 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.
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
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Compact CAT5 Audio/Video Splitters and Receiver
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 (Adapter
Cable may be needed)
Resolution &
Refresh Rate Up to 1600 x 1280 non-interlaced at up to 85 Hz
Bandwidth Video: DC to 250 MHz, Audio: 20 Hz to 10 KHz
Video Level 0.7 volts peak-to-peak
Audio
Transmission Local output: Pass-Through Stereo, Remote: Mono
Maximum
Distance Up to 1000 ft. (305 meters) – See table 3.1 for details
Connectors HD15 female for video input and output
3.5 mm Mini-Stereo for audio input and output
RJ45 for CAT5 A/V outputs
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
Enclosure Steel
MTBF 100,000 hours (calculated estimate)
Power All units except UVA-24: from utility-power (mains) outlet, through included
external power adapters. Output Voltage: 6 DC Center-Positive.
Power supply current requirements: 300 ma minimum for UVA-2 and URA,
500 ma minimum for UVA-4 and UVA-8.
UVA-24: Directly from 100~220 VAC
Size & Weight UVA-2: 1.22"H x 4.86"W x 2.60"D - 1.8 lbs
UVA-4: 1.22"H x 8.20"W x 3.00"D - 2.4 lbs
UVA-8: 1.32"H x 7.58"W x 3.88"D - 3.0 lbs
(UVA-8 has 2 L-shaped mounting ears that protrude 0.88” beyond the
main box on each side). 4 mounting holes are present on a rectangular
pattern of 8.62" x 2.63"
UVA-24: 16.7” L x 9.58” W x 3.2” H (with 19” x 3.44” front panel) – 6.5 lbs
URA: 1.22"H x 4.16"W x 2.60"D – 1.6 lbs
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Products 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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