NITEK - Products - Multi Channel Units - VH439

Model

VH439	4 Port Video Hub;
	Up to 750 feet (225 meters) with passive transceivers
	Up to 3,000 feet (900 meters) with active receivers

Description:

4 Port video balun mini-hub with built-in surge suppression. System operates with other Nitek UTP video equipment including, video balun hubs, standard video balun transceivers or active receivers.

The VH439 video balun mini-hub is a multi-channel video transmission device that provides a low cost means of sending quality live video over Category UTP cabling. The system can also adapt to existing communication and computer network spare pairs. The VH439 can send video up to 750 feet (225 meters) when used with other products in the VB37 or VB39 family. When used with model TR515 or TR560 active receivers, distances of 1,500 feet (450 meters) and 3,000 feet (900 meters) respectively can be attained. The VH439 is designed to provide superior immunity from noise and interference, such as RFI and EMI

Features:

Quality video over ordinary twisted pair cable
Built-in protection from power surges and transients
High immunity to noise and interference
Passive units require no power
Video & P/T/Z over a single pair with “up-the-coax” systems
Highly compact, wall-mounted unit
RJ45 modular jack or screw terminals for easy connection when used with other passive baluns
Video can be run in the same cable with telephone, computer signals and power

Transceiver Unit
Size	1.6" (H) x 4.3" (W) x 2.5" (D)
Power Requirements	NONE REQUIRED
Video Input Connection	Standard BNC connector for 1 Vpp composite video Monochrome or Color
Video Format	RS170, NTSC, PAL, SECAM, CCIR (Color or B/W)
Twisted Pair Connection	Screw terminals or RJ45 modular connector providing balanced low voltage current loop
Common Mode Rejection	>70dB
Operating Frequency	DC to 10 MHz
Recommended Transmission Distance	w/passive units - Up to 750 feet (225 meters) w/active units - up to 3,000 feet (900 meters)
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/300 meters)
Normal Capacitance	17pF/ft.
Impedence	100 Ohms +/- 20%
UTP Category	2 or better

Product Drawing

NITEK - VH439 - 4 Port UTP Video Balun Mini-Hub; Up to 1,000 ft with passive transceivers

Product Specifications

VH439 Spec	--	VH439 dwg
VH439 A&E Spec	VH439 A&E Spec	VH439 Visio
VH439 Manual	--	--

Applications:

Structured cabling environments
Multi-camera applications through conduit (more cameras through a smaller diameter)
Combining mid-span video runs into a single cable

Wire and Cable Recommendations

Twisted Sender is recommended for use with unshielded twisted pair (UTP) wiring. The systems will operate over wire gauges from 26 AWG through 12 AWG but are optimized for 24 AWG. Category cabling 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.

System Drawings