Nitek VH439 User Manual

Model VH439

4 Port Video Mini-Hub

Installation and

Operation Manual

Note: This installation should be made by a
qualified service person and conform with local

Reduce risk of fire or electrical shock. Do not
expose this product to rain or moisture.

!

codes.

Specifications

Size 1.6”H x 4.3”W x 2.5”D UTP Category Unshielded Category 2 or better
(41m H x 110m W x 64m D)

Common Mode >60dB
Power Requirements None Required Rejection

Video Input Standard BNC Operating Frequency DC to 10 MHz
Connection 1vpp composite video

Monochrome or Color Recommended w/passive units - Up to 1,000 feet
Transmission w/active units - Up to 3,000 feet
Video Format RS170, NTSC, PAL, SECAM Distance w/DVR recorders - Up to 750 feet
CCIR (Color or B/W)
Transient Immunity Built-in
Twisted Pair Screw Terminals or RJ45 Jack

Description

The VH439 video balun hub is a multi-channel video transmission device that provides a low cost means of
sending quality live video over category 2, 3, 4 or 5 twisted pair cable. The system works equally well over existing
communication and computer network spare pairs or new cable installations.
The VH439 can send video up to 1,000 feet when used with other products in the VB37 or VB39 family. When
used with a DVR the VH439 must be limited to 750 feet. When used with Model TR515 or TR560 active receivers,
distances of 1,500 feet and 3,000, respectively, can be obtained. The VH439 is designed to provide superior
immunity from noise and interference even when run near power lines. Additionally, the unit has built-in surge
arresting to protect video equipment from harmful power lines and lightning related type surges.

USA Office:
5410 Newport Drive, Rolling Meadows, IL 60008
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
WWW.NITEK.NET

680390102

1.60"

4.30"

3.30"

NITEK®

2.50"

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VH439

UTP MINI HUB

NITEK

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Europe Office:
De Schans 19-21 2a, 8231 KA Lelystad
The Netherlands
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
WWW.NITEK.NL

Rev 021411

Installation

The VH439 is a 4 port video balloon hub with built-in surge protection. The system operates with other Nitek
UTP video equipment including other UTP video hubs, standard video balloon transceivers or active receiver units.
It is easy to mount in small places. The VH439 converts video into twisted pair signal or vice versa.
The diagram below shows only a few of the many possible configurations. If you have any questions about your
particular application call the Nitek sales or technical offices.
To hook up the VH439 connect a video coax to the BNC connector and hook the twisted pair to the matching +
and - terminals. There are 2 possible twisted pair connectors, the standard screw terminal and an RJ45 modular
jack. Both do the same thing and only one may be used. At the other end of the twisted pair connect another Nitek
UTP video unit in the same way. The twisted pair is polarity sensitive so if you are not getting proper video try
reversing the twisted pair. It will not hurt the equipment if the pair is reversed but the video will not be viewable.

Camera

Monitor

VIDEO 1 VIDEO 2

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Camera

Monitor

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1 Cat 5 Cable

(up to 1,000 ft)

(up to 750 ft with

DVR equipment)

Troubleshooting

Problem Video inverted or rolling and unstable.

Fix/Cause • Reverse the wires of the twisted pair at either the transmitter or receiver.

Problem No video out at the receiver.
Fix/Cause • Check to make sure that there is video in at the transmit end.

• Make sure that the pair of wires you are using is not open or shorted between the
transmit and receive points.

• Check power to the receiver. The receiver must be powered with the supplied
wall pack

Problem Ghost image at the receiver.
Fix/Cause • Bridge tap or “T” tap on the twisted pair video line. Remove tap.

For additional help with problems please call Nitek Tech Support at [phone]. Hours are from 8am to 5pm
Central Standard Time, Monday through Friday. We are always ready to help.

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Camera

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