Vicon V235GLTA-1 User manual

Part No. 8006-8414-10-00 Rev 710 0BInstruction Manual X414-10 •1
Instruction Manual X414-10
Introduction
The information in this manual covers the installation of the V235GLTA-1 Ground Loop Transformer. This unit
should be installed by a qualified technician using approved materials in accordance with national, state and local
codes. Read these instructions through completely before attempting installation.
The V235GLTA-1 prevents video-signal distortion caused by video ground loops. It differentially nullifies the AC
current that can occur in the video cable shield as a result of differing voltage potentials at each end of the shield.
The V235GLTA-1 has been specially designed for coaxial cable control systems such as Vicoax™. The passive
nature of the V235GLTA-1 does not affect the two-way communication (control/video) of such systems.
Installation
The V235GLTA-1 should be installed where runs of video cable are known to have ground loops. See Figure 1
for a typical system interconnection.
Warning: To avoid electrical shock, do not handle grounded objects and the ends of video cables
simultaneously.
Install the V235GLTA-1 as follows:
1. Place the V235GLTA-1 between the camera output and the first video component, such as a switcher,
coaxial cable control transmitter or monitor.
2. Connect the camera or receiver output to the BNC connector marked INPUT on the V235GLTA-1.
Note: Signals are attenuated by approximately 30% (3 dB) by the V235GLTA-1.
3. Attach another cable between the BNC connector labeled OUTPUT on the unit and the first active video
component in the system.
4. There are two holes (one on each tab) on the base of the unit can be used to mount the unit. Use screws
appropriate for the mounting surface to secure the unit.
Figure 1
Interconnection Diagram
WARNING: TO PREVENT RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
Copyright © 2010 Vicon Industries Inc. All rights reserved.
Vicon and its logo are registered trademarks of Vicon Industries Inc. Vicoax is a trademark of Vicon Industries Inc.
Product specifications subject to change without notice.
VICON INDUSTRIES INC., 89 ARKAY DRIVE, HAUPPAUGE, NEW YORK 11788
TEL: 631-952-CCTV (2288) FAX: 631-951-CCTV (2288) TOLL FREE: 800-645-9116
24-Hour Technical Support: 800-34-VICON (800-348-4266)
UK: +44/(0) 1489-566300 WEB: www.vicon-cctv.com

2 •3BCoaxial Cable Recommendations Part No. 8006-8414-10-00 Rev 710
Coaxial Cable Recommendations
Caution: Careful selection of proper cable is essential to obtain the best performance from this equipment. Vicon assumes no
responsibility for poor performance when cables other than those recommended, or equivalent, are installed. In all cases, coaxial cable
impedance should be 75 ohms.
Materials
Use only a pure copper center conductor. Do not use a copper-plated steel or aluminum center conductor, as they will result in
poor quality video. Solid-core bare copper conductor is the best type where flexing and bending will be minimal. If severe
bending and flexing is required for installation, use a stranded center conductor. Never exceed the manufacturers minimum
bend radius specification. Use cellular (foam) polyethylene dielectric except where heavy moisture exists. For moisture
conditions, use solid polyethylene dielectric cable with a heavy exterior insulation. The shield must be copper braid providing
95% or better coverage.
Cable Types
The cable types listed below are the most common 75-ohm types used. They vary in size (diameter), dielectric type and net
DC resistance. The larger cable results in a lower DC resistance and better video quality, with increased difficulty in handling
and installation. Use the required picture quality and cable distance to provide a guide in choosing the best cable type. For
cables other than the approved Vicon types below, contact the manufacturers listed below. Note that “BC” refers to bare
copper and “TC” refers to tinned copper.
Recommended Coaxial Cable Types
Cable
Type Belden Type No. Alpha Type No. West Penn Type No. Type Center Conductor Type Shield and
% Coverage DC Resistance
ohms/1000 ft (1 km)
RG-11/U 8213 9847 811,4811 14 Solid BC BC braid (95%) 2.6 (8.5)
RG-6/U 9248 9804C 806,4806 18 Solid BC Foil + 61% TC braid (100%) 7.5 (24.6)
RG-59/U 8281* ---- 815 20 Solid BC 2 TC braids (96%) 9.9 (32.5)
RG-59/U 9259 9803 816 22 Stranded BC BC braid (95%) 15.0 (49)
RG-59/U 9659 ---- ---- 22 Stranded BC BC braid (95%) 15.0 (49)
*Requires special BNC-M connector due to 0.305 nominal O.D.
Belden Inc. http://www.belden.com/ [phone]
Alpha Wire Company http://www.alphawire.com/ (800)-52 ALPHA (522-5742)
West Penn Wire http://www.westpenn-cdt.com/ (800)-245-4964
Picture Quality vs. Cable Length
Picture Quality Maximum Cable Run** ft (m)
RG-59/U RG-6/U RG-11/U
Usable picture 1100 (350) 1500 (450) 2400 (750)
Clean picture 820 (250) 1000 (300) 1600 (500)
Best picture 400 (120) 530 (160) 820 (250)
** For longer cable runs, use a Vicon Video Amplifier to obtain a suitable picture
Usable Vicoax Signal vs. Cable Length
Usable Vicoax
signal.
Maximum Cable Length ft (m)
RG-59/U RG-6/U RG-11/U Fiber
1500 (450) 1500 (450) 5000 (1524) 5000
(1524)

Part No. 8006-8414-10-00 Rev 710 4BMaintenance •3
Maintenance
The V235GLTA-1 Ground Loop Transformer requires no maintenance.
Shipping Instructions
Use the following procedure when returning a unit to the factory:
1. Call or write Vicon for a Return Authorization (R.A.) at one of the locations listed below. Record the name of
the Vicon employee who issued the R.A.
Vicon Industries Inc.
89 Arkay Drive
Hauppauge, NY 11788
Phone: 631-952-CCTV; Toll-Free: 1-800-645-9116; Fax: 631-951-CCTV
For service or returns from countries in Europe, contact:
Vicon Industries (U.K.) Ltd
Brunel Way
Fareham, PO15 5TX
United Kingdom
Phone: [phone]; Fax: [phone]
2. Attach a sheet of paper to the unit with the following information:
a. Name and address of the company returning the unit
b. Name of the Vicon employee who issued the R.A.
c. R. A. number
d. Brief description of the installation
e. Complete description of the problem and circumstances under which it occurs
f. Unit’s original date of purchase, if still under warranty
3. Pack the unit carefully. Use the original shipping carton or its equivalent for maximum protection.
4. Mark the R.A. number on the outside of the carton on the shipping label.

Vicon Industries Inc.
Corporate Headquarters
89 Arkay Drive
Hauppauge, New York 11788
631-952-CCTV (2288) 800-645-9116
Fax: 631-951-CCTV (2288)
Vicon Europe
Headquarters
Brunel Way
Fareham, PO15 5TX
United Kingdom
[phone]
Fax: [phone]
Germany
vin-videotronic infosystems gmbh
Lahnstrasse 1
D-24539 Neumuenster
Phone: [phone]
Fax: [phone]
Far East Office
Unit 5, 17/F, Metropole Square
8 On Yiu Street, Shatin
New Territories,
Hong Kong
(852) 2145-7118
Fax: [phone]
Internet Address: www.vicon-cctv.com