Description:
Video Balun Combiners for twisted pair up to
750 feet (228 meters) in conventional UTP applications,
100 meters in TIA/EIA 568 applications.
The VB43ATF is a unique transmission device which provides
an economical means of sending video, camera
power and 2 wire control signals over a standard Category
5 cable. Video is sent over one pair, 2 wire control
signals over a second pair and camera power is
sent over the two remaining pairs. A mini-coax pigtail
with male BNC is used on the VB43ATF. Two pair of
screwless terminals are provided to connect 2 wire control
signals and power (wires are provided for these connections).
Connections to the Category 5 cable are made
via an RJ45 connector.
The VB43ATF Video Balun provides
the same high immunity to noise and interference
as all of the Nitek baluns.
This simplified wiring scheme provides a convenient
method of powering the camera, allowing for quicker
and easier installations. The RJ45 modular jack uses
standard 568B wiring so spare network cables can be
used.The VB43ATF also offers indication lights for the
presence of power and data.
U.S. Patent No. 7,193,149
|
Features:
- Intelligent light link indication
- Superior video over ordinary twisted pair cable
- Quick connect screwless terminals
- Immunity to noise and interference
- Rugged ABS flame-retardant casing
- Built-in surge suppression
- Passive devices - do not require power
- Convenient connection to Category 5 cable for video power and 2 wire control signals
- Easier to install than coax
|
Transceiver Unit
| Size w/mounting tabs |
0.87"H x 1.87"W x 1.25"D |
| Power Requirements |
NONE REQUIRED |
| Power Pass Through |
250mA @ 1,000 feet on 24 AWG
1 Amp @ 100 feet on 24 AWG |
| Video Input |
1 vpp composite video
monochrome or color |
| Output |
Balanced low voltage current loop |
| Modular Jack |
Standard RJ45 |
|
System (2 Transceivers Required)
| Video Format |
RS170, NTSC, PAL, SECAM,
CCIR (Color or B/W) |
| Video Input |
1 vpp composite video
monochrome or color |
| Operating Frequency |
DC to 10 MHz |
Common Mode
Rejection |
>60 dB typ. |
| Temperature Range |
0 degrees C to +85 degrees C |
| Humidity Range |
0 to 98%, non-condensing |
| Transient Immunity |
6,000 V 1.2uS x 50 uS
per ANSI / IEE 587 C62.41 B3
3,000 A 8uS x 20 uS
when ground screw terminal is
connected to earth-ground |
| Twisted Pair Connection |
RJ45 modular connector |
| Transient Immunity |
Built-in |
| Wire Spec |
26 to 12 AWG unshielded
twisted pair (UTP) |
| |
DC Loop Resistance |
51 Ohms/1,000 feet (max)
(51 Ohms/304 meters) |
| |
Normal Capacitance |
17pF/ft. |
| |
Impedence |
100 Ohms +/- 20% |
| |
UTP Category |
2 or better |
|
|
|
| . |
|
Applications:
- Intra-building CCTV installations (instead of coaxial cable)
- Structured cabling (Category 5) environments
- Multi-camera applications through conduit (more cameras through a smaller diameter)
|
SYSTEM COMPONENTS
Two video balun combiner devices (VB43 or WB42 - in any
combination) are required for transmission over a Category 5 cable
to provide video, RS422 and power using the RJ45 modular
connectors.
|
Wire and Cable Recommendations
The VB43 is recommended for use with unshielded twisted pair (UTP) wiring. The system will operate over wire gauges
from 24 AWG through 22 AWG. The VB43 connects most
conveniently to a Category 5, 4-pair cable, but any Category cabling
may be used.
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 coexistent 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.
For more
specific information regarding wire types, gauges and proper
installation techniques, please call (800) 528-4343 for technical
assistance.
|
|
