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INSTALLATION GUIDE
NITEK ®
De Schans 19-21 2a
8231 KA Lelystad
Tel: +31(0)320-2300005
Fax: +31(0)320-282186
E-mail: info@nitek.nl
WWW.NITEK.NL
USA
5410 Newport Drive, # 24
Rolling Meadows, IL 60008
Phone: (847) 259-8900
Fax: (847) 259-1300
E-mail: info@nitek.net
WWW.NITEK.NET
EUROPE
Video Balun Transceiver for Twisted Pair
(with built-in surge suppression)
VB39M
Video Balun Transceiver with fixed BNC for twisted pair operation with other balun trans-
ceivers or active receivers. The VB39M has built-in surge suppression for added equip-
ment protection.
The VB39M video balun transceiver is a video transmission device that provides a low
cost means of sending live video over unshielded twisted pair, point-to-point wiring for dis-
tances of up to 750 feet (225 meters) with other passive balun transceivers, up to 1,500
feet (450 meters) with TR515 single channel and model 51 series hubs, and up to 3,000
feet (900 meters) with TR560 and model 56 Series hubs. The VB39M is compatible with
all the "up-the-coax" control systems. A basic system uses (2) video balun transceivers,
one at each end of a twisted pair of wires.
These units are intended for use over existing in-house telephone wiring, Category wiring
or other twisted pair cable runs to provide a convenient, cost effective alternative to coax.
The VB39M is designed to provide superior immunity from noise and interference even
when running next to line power! The VB39M also provides a unique mounting tab and
strain relief
Description
1. Be sure to read these Safety Instructions.
2. Keep the Instructions for future reference.
3. Be sure to HEED all Warnings.
4. Follow ALL instructions.
5. DO NOT use this device or any of the equipment described, near water.
6. Clean this device ONLY with a dry cloth.
7. DO NOT block any ventilation openings.
8. Install in accordance with the manufacturer’s instructions.
9. DO NOT install near any heat sources such as radiators, heat registers, stoves or other appa-
ratus (including amplifiers) that produce heat.
10. DO NOT defeat the safety purposes of polarized or grounding type plugs. A polarized plug
has two blades, with one blade wider than the other. A grounding plug has two blades and has
a third grounding prong. The wide blade and the grounding prong are provided for your safety.
If the provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
11. Protect the power cord from being walked on or pinched especially at plugs, convenience re-
ceptacles and other points where they exit from the device.
12. Only use attachments and/or accessories specified by the manufacturer.
13. Refer all servicing to qualified service personnel. Servicing is required when the device has
been damaged in any way, such as the power supply cord or plug is damaged, liquid has
been spilled on, or objects have fallen into the device, the device has been exposed to rain or
moisture, does not operate normally or has been dropped.
14. WARNING: To reduce risk of fire or electric shock, do not expose this apparatus to rain or
moisture.
15. Installation shall be performed ONLY by qualified personnel and must conform to all local
codes.
16. Unless the device is specifically marked as a NEMA 3, 3R, 3S, 4, 4X, 6 or 6P enclosure, it is
designed for indoor use ONLY and it must not be installed where exposed to rain or moisture.
Important Safety Instructions
Parts of the VB39M
Installation & Setup
Installation Considerations
Wire and Cable Recommendations. The VB39M is designed for use with unshielded twisted
pair (UTP) wiring. Although the system will operate over wire gauges from 18 AWG through 24
AWG, all NITEK UTP system designs are optimized for 24AWG and all adjustment and setting
information assumes use of 24 AWG. Individually shielded pairs should be avoided, as they
drastically reduce the operating range of the systems. Multi-pair cable (25-pair or more) with an
overall shield are acceptable. Video can be operated in the same communication cable coexis-
tent with telephone, computer, control signals, power voltages and other video signals. While
video may be routed through telephone punch-down block terminals, any bridge-taps, also
called T-taps and any resistive, capacitive or inductive devices MUST BE removed from the
pair. Connect an 18 AWG solid Earth Ground wire to the “Ground” terminal on the VB39M for
optimum surge protection.
For more specific information regarding wire types, gauges and proper installation techniques,
please call Tech Support at 800-528-4343.
Video. The VB39M is designed to transmit or receive video at a maximum distance of 750 feet
with a companion NITEK Balun over Category wire of 24 AWG or up to 3,000 feet with an ap-
propriate active NITEK receiver. Before commencing installation be sure that the cable length
does not exceed the recommended lengths. If the length of cable is not known, then a measure-
ment of “Loop Resistance” of the cable can be made using a reliable ohmmeter. Short the pair
together at one end and measure the resistance of the “Loop” across the pair at the opposite
end of the cable. The resistance values shown below are for 750 feet of the most commonly
used UTP cables.

Produktspecifikationer

Varumärke: Nitek
Kategori: Inte kategoriserad
Modell: VB39M

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