BALUN
Training
WHAT IS A BALUN ?
The term of balun is derived by combining balanced and unbalanced.
A balun is a kind of transformer, it's used to convert an unbalanced signal (coaxial cable) to a
balanced one (twisted pair cable). Because in many communication systems, there are mismatches in connector types and differences in impedance between equipments and cabling
systems
Balun is useful for long distance audio/video transmission: standard passive video balun can
transmit video signal up to a maximum distance of 650 meters when linked "point-to-point",
via Cat5 or better UTP cable, but usually, typical distance goes up to 400 meters. Some other
active balun transmits signals up to 2kms.
Used in pairs, balun allow you to eliminate more expensive coaxial cable, including coupling
signals from remote video cameras to display systems, video capture, security and
surveillance monitoring applications.
Balun can be used in many different applications: closed-circuit television, telecommunication,
CATV, computer networks and other audio/video systems.
2
APPLICATION OF BALUN
Vedio
Vedio
Balun
Balun
Camera
Monitor
CCTV
Transceiver Box
Transceiver Box
Long distance patch cord
Patch cord
S-Video/Audio Balun
TV
Patch cord
Monitor
Monitors host
Video/Audio Balun
TV
3
BALUN TYPE
• CCITT G.703 balun
• CCTV balun
• Multimedia balun (HDMI balun)
• VGA balun
• DVI balun
• Active balun
• USB balun
4
CCITT G.703 BALUN
•
G.703 is a CCITT* standard for transmitting voice over digital carriers such as T1 and E1.
G.703 provides the specifications for pulse code modulation (PCM) at data rates from 64
Kbps to 2.048 Mbps.
G.703 service is typically used for interconnecting data communications equipment such
as bridges, routers, and multiplexers. G.703 is transported over balanced (120 ohm
twisted pair) or unbalanced (dual 75 ohm coax) cable. Whether the G.703 is balanced or
unbalanced depends on your geographic location and the carrier that supplies the service.
Balanced service is the most common around the world with the exception of the U.K. and
the Netherlands. However, the new Open Network Provision standard of the EEC requires
that balanced service be available throughout all of Europe.
*CCITT: the CCITT (Consultative Committee on International Telegraphy and Telephony)
former name of the ITU (International Telecommunications Union), is the primary
international body for fostering cooperative standards for telecommunications equipment
and systems. It is located in Geneva, Switzerland.
5
• CCITT G.703 Type
• CCITT G.703 Krone IDC balun
(03-G01X-00)
• CCITT Tooless IDC balun
• CCITT G.703 Dual Balun
(03-20G6-00)
• CCITT Standard RJ45
• CCITT Keystone RJ45
6
WHAT IS CCTV ?
•
CCTV (closed circuit television) is a television system in which signals are not publicly
distributed; cameras are connected to television monitors in a limited area such as a store,
an office building, or on a college campus. CCTV is commonly used in surveillance
systems.
7
WHAT IS A CCTV BALUN ?
•
The CCTV Video Balun allows base-band composite video signals to be transmitted via a
single unshielded twisted pair (UTP) cable for more versatile cabling.
CCTV Balun is used in pairs to allow you to eliminate more expensive coaxial cable,
including coupling signals from remote video cameras to display systems, video capture,
security and surveillance monitoring applications.
The use of existing twisted pair infrastructure such as telephone cable and cat.5 computer
networking cables are also available. All our Baluns are 100% test for reliability and
durability to guarantee your signal integrity.
8
CCTV BALUN TYPE (BNC)
•
Tooless IDC with cover
(03-2180-71)
•
Tooless IDC Video balun
(03-2180-71)
•
Standard RJ45 balun
•
Fly-Lead balun
•
Keystone balun (03-2012-01)
•
Screw + RJ45 balun
(03-2111-XX)
•
Quad balun (03-B249-00)
9
MULTIMEDIA BALUN
•
Audio Balun (03-4049-00)
•
Audio & Video RCA Balun (03-B259-00)
•
S-Video Extender (03-6001-00,03-6003-00)
•
RGB Balun / Component Video Bbalun (03-R403-00)
•
HDMI Balun
10
VGA BALUN
•
The VGA Balun Set includes a balun that connects to your source (i.e. a computer, Digital
Video Recorder or VGA Splitter) and a balun that connects to your monitor (i.e. a CRT,
LCD, Plasma or projector). All that is required to connect the baluns is Cat. 5 shielded
twisted pair cable, which is far less expensive and easier to install than VGA cable...and if
you have a home network, you may even have existing runs of Cat. 5 already installed.
11
DVI BALUN
•
The DVI-Balun allows a high-quality DVI (digital visual interface) signal to be transmitted
up to 150 feet over two Cat 5 cables (one shielded, one unshielded). The DVI-Balun is
HDCP compliant, supports standard HDTV and VESA resolutions, and supports the
DDWG standard for DVI compliant monitors.
12
ACTIVE BALUN
•
The Active CCTV Transmitter Balun provides enhanced distance performance for a single
CCTV video channel via cat.5 unshielded twisted pair (UTP) cable. The balun is installed
at the CCTV camera and is powered by the camera power supply. This model is for the
camera of 12V DC. Maximum distance supported ranges from 0 to 3,000ft via cat.5 UTP
when connected to passive CCTV baluns at the receiver. If you use Active CCTV receiver
Balun, the distance supported ranges from 600M to 1500M. (03-A21x-0x)
13
WHAT ARE THE DIFFERENCES CONCERNING THE DISTANCES BETWEEN
PASSIVE VGA AND ACTIVE VGA ?
•
Active VGA supports high resolution, up to 1920x1440. The Passive VGA goes only up to
1280x1024 pixels.
Then, the distances are as below:
Passive VGA:
137m (450ft) with VGA resolution 640x480 pixels
107m (350ft) with SVGA resolution 800x600 pixels
76m (250ft) with XGA resolution 1024x768 pixels
61m (200ft) with SXGA resolution 1280x1024 pixels
Active VGA:
180m (591ft) with VGA resolution 640x480
150m (493ft) with SVGA resolution 800x600
130m (427ft) with XGA resolution 1024x768
100m (329ft) with SXGA resolution 1280x1028
80m (263ft) with UXGA resolution 1600x1200
70m (230ft) with resolution 1920x1440
14
Below is an illustration on how video baluns work their way in to an actual installation.
A simple single channel passive balun setup. Notice you will still receive a colored picture at
1,200ft yet a black and white picture after 1,800ft. With active baluns you will be able to
achieve longer runs than passive.
1200ft color
1800ft BW
Vedio
Vedio
Passive
Patch Cord
Passive
Camera
Monitor
A single channel active to passive balun setup. Notice you will still receive a colored picture at
4,800ft yet a black and white picture after 6,600ft.
1ft = 0.3048 m
4800ft color
6600ft BW
Vedio
Vedio
Passive
Patch Cord
Active
Camera
Monitor
DC12V Power
15
USB BALUN
•
This pair of USB balun kit can transmit USB video and data signals up to 150 feet without
any signal loss, greatly eliminating the the typical 15-feet USB cable limitation.
•
The built-in active repeaters of this balun kit provides maximum flexibility for USB devices
and are ideal for security and surveillance video, PC digital audio systems and other
peripherals with USB interface that are beyond the reach of regular cables.
16
USB BALUN EASY INSTALLATION
•
Easy Installation
There is absolutely no configuration needed for installing this USB balun. This USB
extender kit contains a local transmitter paired with a remote receiver unit, allowing you to
make out-of-the-way connections from a PC to a remote USB printer, USB camera, USB
scanner, USB barcode reader, USB hub or other USB devices without any data loss. The
local transmitter connects to a computer source and the receiver unit placed at the remote
location to be connected with the USB device. The USB balun transmitter and receiver
units can then be linked using low-cost Cat5 or Cat6 Ethernet cable to extend the data
signal from the source to the USB end device, providing a high quality USB extension
while concealing the cable for a cleaner, more professional installation.
17
THE END …
18
1200ft color
1800ft BW
Vedio
Vedio
Passive
Patch Cord
Passive
Camera
Monitor
4800ft color
6600ft BW
Vedio
Vedio
Passive
Patch Cord
Active
Camera
Monitor
DC12V Power
19