Specifications
Specifications subject to change without notice.
Maximum Distance* 2200 feet
Maximum Video Input 1.1 Vp-p
Bandwidth (video) DC to 8 MHz
Impedance (video) 75 ohms
Insertion Loss Less than 2 dB per pair over the frequency range from
DC to 8 MHz
Return Loss Greater than 15 dB over the frequency range from DC to
8 MHz
Common Mode Rejection Greater than 40 dB @ 8 MHz
Unshielded Twisted Pair Maximum capacitance: 20 pf/foot
Cabling Specifications Impedance: 100 ohms @ 1 MHz
(24 gauge or lower solid Attenuation: 6.6 dB/1000 ft. @ 1 MHz
copper) Cat 3, Cat 5, Cat 5e, Cat 6, Cat 7 compatible
Connectors Two (2) spring tension blocks to one (1) male BNC
Temperature Operating: 32 to 131 F (0 to 55 C)
Storage: -4 to 185 F (-20 to 85 C)
Humidity: up to 95%
Enclosure Black plastic
Dimensions 1.6” x 2.8” x 1”
Ordering Information AVO-V1-ST: single AVO-V1-ST balun in bulk packaging
AVO-V1-ST-PAC: two AVO-V1-ST baluns in retail-ready
packaging
Warranty 2 years
* 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.
Contact Information
Intelix
2222 Pleasant View Road
Middleton, WI 53562
Toll-free: 866-4-MATMIX
Phone: 608-831-0880
Fax: 608-831-1833
www.intelix.com
Intelix AVO-V1-ST Video Balun
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The Intelix AVO-V1-ST video balun eliminates 75ohm coaxial cable and allows composite baseband
video to be transmitted via a single unshielded twisted
pair (UTP) cable, such as Cat 5. Four AVO-V1-ST
baluns may be used with one UTP, four pair cable.
Typically, AVO-V1-ST baluns are used in pairs to
transmit standard NTSC, PAL, or SECAM
composite video.
The AVO-V1-ST balun is typically used with CCTV security and surveillance equipment,
such as CCTV cameras, monitors, DVRs, video sequencers, video multiplexers, quads, video
switchers, CCTV camera servers, and time-lapse VCRs. The AVO-V1-ST balun may also
be used with other baseband video equipment.
To install an AVO-V1-ST balun, perform the following steps:
1. Turn off power and disconnect the video equipment by following the manufacturer’s
instructions.
2. Identify the pin configuration of the baluns. One twisted pair is required for each
camera signal. Note: The V1-ST is reverse polarity sensitive. Please ensure that
“Ring” is connected to “Ring” and “Tip” is connected to “Tip.”
3. The AVO-V1-ST works in pairs. Plug one V1-ST into the BNC connector of the
source device.
2. Plug a second balun into the BNC connector of the destination equipment at the
other end.
4. Slice open the outer jacket of the UTP (Cat 5) cable to expose the individual wire
pairs.
5. Complete the connection between the two baluns using standard UTP cable. Ensure
the same wire pair is used on each end.
6. Power-on the video equipment and check the picture quality. The video should be
clear and sharp within the maximum specified distances.
Installation
Caution: Do not attempt to open the balun housing. There are no user-serviceable parts
inside the AVO-V1-ST. Opening the unit will void your warranty.
Caution: Do not connect the AVO-V1-ST to a telecommunication outlet wired to
unrelated equipment. Making such a connection may damage the equipment
and/or balun. Please ensure all wiring is “straight-through.”
Caution: Do not mount the balun over equipment ventilation openings. Covering the
openings may cause the equipment to overheat.
AvoCat
Series
Troubleshooting
If your equipment malfunctions with AVO-V1-ST baluns in place, follow the troubleshooting procedures below:
1. Perform diagnostics on your audio equipment by following the manufacturer’s
instructions.
2. Check that both baluns use the same cable pairs.
3. The maximum operational distances over which the AVO-V1-ST can be transmitted
is dependant on the equipment used and cable. Ensure that the maximum
recommended operational distances have not been exceeded.
4. Check that only twisted pair patch cords are being used.
5. Replace the AVO-V1-ST balun with another AVO-V1-ST that is known to be
working.
6. If you still cannot diagnose the problem, contact Intelix for support.
Frequently Asked Questions
How do I expose the individual pairs in Cat 5 cabling?
There is no single method when exposing the four
individual pairs in twisted pair cabling, such as Cat 5
and Cat 6; however, it does help to have a cable
stripping tool designed to strip the cable jacket/
insulation.
Begin by stripping back the cable’s outer jacket/
insulation about an inch (or more depending on
whether multiple baluns will be connected to the pairs
of a single cable) so that the internal wires are exposed.
Be careful not to cut the internal wires when stripping
the insulation/jacket. Eight twisted wires and a string
should now be visible; the string is unnecessary and
may be removed. These eight wires, which when
combined form four pairs, connect directly to the
baluns. Typical protocol pairs similar colors; the
important thing is to verify the same color-coded pairs
are used on each end.
Is the AVO-V1-ST balun reverse polarity sensitive?
Yes.
Can more than one camera signal be transmitted under one 4-pair Cat 5 UTP
cable?
Yes. Up to four (4) camera signals can be transmitted under a 4-pair Cat 5 UTP cable.
Each camera signal uses one pair.
Can 25-pair and 50-pair bulk twisted pair cable be used to transmit multiple
camera signals?
Yes. As long as the 25-pair and 50-pair cable meets Cat 5 specifications, it may be used
to transmit up to 25 or 50 camera signals, respectively.
Can CCTV camera power and audio be transmitted under the same UTP cable
jacket as video?
Yes. On separate twisted pairs.
Will the AVO-V1-ST baluns work with other cable besides Cat 5?
Yes. The AVO-V1-ST baluns will work with lower grades of cable such as Cat 3.
Maximum distances will be less than with Cat 5.
Where can I find an outside Cat 5 cable?
Major cable vendors offer outside Cat 5 cable.
What is the maximum length of twisted pair at a given gauge wire?
Maximum cable lengths are specified for 24AWG UTP cable. If lower gauge cable (i.e.,
22AWG) is used, greater distances may be achieved.
Will the AVO-V1-ST Baluns work with 100-ohm shielded twisted pair (STP)?
Yes; however, shorter distances may be achieved due to higher capacitance. If used,
ground the shield at least on one end.
Does the AVO-V1-ST Balun work in conjunction with other Intelix baluns, such as
the V1-AR, AVO-V1, V1, and V1-ST?
Yes. Providing that the signal polarity of the baluns match.
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