Intelix AVO-VGA2-WP User manual

Intelix AVO-VGA2-WP
Installation Manual
Introduction
The Intelix AVO-VGA2-WP balun set transmits VGA video and stereo audio passively
over two standard unshielded twisted pair cables, such as Cat 5, Cat 5e, or Cat 6. The unit
eliminates costly and bulky cable while extending transmission distances.
One twisted pair cable carries the audio path and a second twisted pair cable carries the
video path, thereby allowing audio and video to be transmitted to two separate locations.
Pre-Installation
Note: The AVO-VGA2-WP does not support VGA handshaking and control
signals. Therefore, it is necessary to set the monitor attributes prior to installing the
balun set. First connect the source (typically a computer) directly to the destination
(typically a monitor) with a standard VGA cable. After doing so, set the monitor
attributes to the required settings (i.e., resolution, color, etc.). For best results, also set
the contrast and bri
g
htness to the maximum level.
Caution: Do not attempt to disassemble or alter the balun housing. There are no
user-serviceable parts inside the unit. Doing so will void your warranty.

Installation
1. Power off the source and destination devices which will be connected to the baluns.
2. Verify the modular outlets and cross connects to which you will connect the AVO-
VGA2-WP are configured properly and labeled appropriately to identify the circuit.
3. Verify the desired twisted pairs are not being used for other LAN or telephone
equipment.
4. Connect the send balun (AVO-VGA2-WP-S) to the audio/video ports of the source
equipment. Tighten the mounting screws on each balun.
5. Connect the send balun to the twisted pair cables. Verify the termination conforms to
the EIA/TIA 568B standard.
6. Connect the receive balun (AVO-VGA2-WP-R) to the destination equipment.
7. Connect the receive balun to the opposite end of the twised pair cables. Verify
the termination conforms to the EIA/TIA 568B standard.
8. Power on the source and destination equipment.
9. If necessary, set monitor contrast and brightness to the desired levels.
10. Set the monitor refresh rate to the optimal rate for the display at the desired resolution.
11. If necessary, adjust the image quality with the Sync switch on the send and receive
baluns. It is recommended that both switches be in the same position. Position A
unbalances the signal (demux), position Bbalances the signal (mux).
Caution: Do not connect the balun to a telecommunication outlet wired to
unrelated equipment. Doing so may damage the unit or any connected equipment.
Ensure all connected twisted pair cabling is straight-through (point-to-point).
Caution: To minimize the possibility of equipment damage from electrostatic
discharge (ESD), all source and destination equipment must be powered off during
installation. This includes signal extenders, splitters, and switches.
Note: For your convenience, it is recommended that you uniquely mark the ends
of the twisted pair cable before pulling them through a wall or conduit.
Note: The AVO-VGA2-WP features an optional grounding screw that may be used to
correct any image anomalies, such as differences in hue from one side of a monitor to
the next. Should this occur, connect the balun ground to earth ground. However, if the
building has a grounding problem, such as ground loops, grounding the balun may
negatively affect the signal. Only ground the AVO-VGA2-WP if it positively affects
the si
g
nal.

Troubleshooting
Symptom Probable Causes Possible Solutions
Image distorted or
skewed Weak or distorted sync signal Change the screen refresh rate of the video source to the next higher or lower setting
Adjust the Sync switch on both the send and
receive baluns
No image Attach or detach the grounding screw on either
or both of the baluns to earth ground
Unusual colors Reversed polarity Verify 110 punch pinout conforms to EIA/TIA
568A or 568B standard. If not, re-terminate the
cable.
Bad RJ45 crimp
Smearing or weak
video contrast Exceeded cable distance Verify cable grade and total cabling distance
Reduce the screen resolution
Reduce the screen refresh rate
Horizontal bars
moving upward in
background
Ground loop
problem Attach or detach the grounding screw on either or both of the baluns to earth ground
Verify the source and destination equipment are
at the same ground potential.
Shaking image Change the screen refresh rate of the video
source to the next higher or lower setting
Background pattern EMI interference Identify possible radiating frequency sources and
isolate them from the cabling. Use shielded
twisted pair cabling.

Technical Specifications
Video Max Distance 640x480: 450 feet
800x600: 350 feet
1024x768: 250 feet
1280x1024: 200 feet
Audio Max Distance 2,500 feet
Video Input Signal Video 1.1 Vp-p
Sync: TTL standard
300 kHz max
Video Bandwidth (3 dB) DC to 60 MHz
Video Insertion Loss Less than 3 dB per pair over the frequency range
Video Return Loss -15 dB maximum from DC to 60 MHz
Audio Bandwidth 20 Hz to 20 kHz
Audio Impedance 600 ohms, balanced
Audio Isolation 500 V
Audio Nominal Level 1.0 volts
Audio Common Mode Rej. Greater than 40 dB
Termination St
y
le (2) 110 punch-down connectors
Cable Unshielded Cat 5, Cat 5e, Cat 6 or better
Temperature Operating: 0 to 55 C.
Storage: -20 to 85 C.
Humidity: up to 95% non-condensing
Warrant
y
2 years
Order Information AVO-VGA2-WP: one send and one receive balun
AVO-VGA2-WP-R: one receive balun
AVO-VGA2-WP-S: one send balun
Distances and picture quality may be affected by cable grade, cable quality, source and destination
equipment, RF and electrical interference, and cable patches. Intelix specifications are based on
straight-through cabling with standard-grade Cat 5.
Intelix
2222 Pleasant View Road
Middleton, WI 53562
608-831-0880 | phone
866-4-MATMIX | toll-free
608-831-1833 | fax
www.intelix.com