NITEK 32 Channel Passive UTP Video Hubs

Model

VH3239	32 Port UTP Video Hub;
	Up to 750 feet (225 meters) with passive transceivers
	Up to 3,000 feet (900 meters) with active recievers

Description:

32 port video balun hubs with built-in surge suppression. Systems operate with other Nitek UTP video equipment including, video balun hubs, standard video balun transceivers or active receivers.

The VH3239 video balun hubs are multichannel video transmission devices that provide a low cost means of sending quality live video over Category UTP cabling. The systems can also adapt to existing communication and computer network spare pairs, or new cable installations. The VH3239 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 VH3239 are 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 when used with passive baluns
Highly compact, only one rack unit in height
Conveniently integrates with Nitek Modular systems
Video can be run in the same cable with telephone, computer signals and power

Transceiver Unit
Size	1 RU x 9.5" (D)
Power Requirements	24 VAC @ 450mA (Wall transformer provided with unit)
Video Input	Balanced low voltage current loop
Video Output	1 Vpp composite video monochrome or color
Common Mode Rejection	>70dB
Video Format	RS170, NTSC, PAL, SECAM, CCIR (Color or B/W)
Twisted Pair Connection	Screw terminals providing balanced low voltage current loop
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
Temperature Range	-20 degrees C to +55 degrees C
Humidity Range	0 to 98% non-condensing
Enclosure Type	Standard 19" rack 1 RU in height
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 Specifications

VH3239 Spec	--	VH3239 dwg
VH3239 A&E Spec	VH3239 A&E Spec	VH3239 Visio
VH3200 Manual	--	--
VB41x8 Manual		--

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.

Product Drawing

System Drawings

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