NITEK - Products - Single Channel Units - VB31M

Model

VB31M	Video Balun Transceiver for Twisted Pair
	up to 750 feet (225 meters) with Passive Transceivers
	up to 3,000 feet (900 meters) with Active Receivers

Description:

Video balun with pigtail coax and male BNC for operation with other baluns or active receivers.

The VB31M video balun is a video transmission device which converts coaxial signals into UTP signals. The unit provides a low cost means of sending live video over unshielded twisted pair, point-to-point wiring for distances of up to 750 feet (225 meters) with other passive baluns, 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 VB31M is compatible with all of 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 5 wiring or other twisted pair cable runs to provide a convenient, cost-effective alternative to coax. The VB31M is designed to provide superior immunity from noise and interference even when running next to line power! The VB31M also provides a unique mounting tab and strain relief.

Features:

RJ45 jack connection for twisted pair
Quality video over ordinary twisted pair cable
Immunity to noise and interference
Passive devices - do not require power
Mini-coax pigtail for in-camera or dome mounting
Weather resistant design
Easier to install than coax
Compatible with all twisted pair equipped cameras, enclosures and domes

Transceiver Unit
Size	0.9" (H) x 1.0" (W) x 2.0" (D) (not including coax)
Power Requirements	NONE REQUIRED
Input	1 vpp composite video monochrome or color
Output	Balanced low voltage current loop
Shipping Weight	1 lbs for single unit
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	-10 degrees C to +85 degrees C
Humidity Range	0 to 98%, non-condensing
Twisted Pair Connection	RJ45 jack
Wire Spec	26 to 12 AWG Unshielded Twisted Pair (UTP)
DC Loop Resistance	51 Ohms/1,000 feet (max) (51 Ohms/300 meters)
Normal Capacitance	17pF/ft.
Impedence	100 Ohms +/- 20%
UTP Category	2 or better

VB31PT - Video Balun Transceiver for Twisted Pair

Product Specifications

VB31M spec	--
VB31M Manual	--	VB31M Visio

Applications:

Intra-building CCTV installations (instead of coaxial cable)
Structured cabling (Cat wiring) environments
To eliminate requirement for Plenum Coax
Multi-camera applications through conduit (more cameras through a smaller diameter)

Wire and Cable Recommendations

The VB31M is recommended for use with unshielded twisted pair (UTP) wiring. The systems will operate over wire gauges from 26 AWG through 12 AWG. Category 2, 3, 4 or 5 cable may be used. Individually shielded pairs should be avoided, as they drastically reduce the operating range of the systems. Multi-pair cable with an overall shield is 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.