Document Number:
VH839M
Model
VH839M 8 Port UTP Video Hub;
  Up to 750 feet (228 meters) with passive transceivers
  Up to 3,000 feet (914 meters) with active recievers
Revision Number:
112003

Description:
8 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. These units feature RJ45 jack connections for quick and reliable connections.

The VH839M 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 VH83M9 can send video up to 750 feet (228 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 (457 meters) and 3,000 feet, (914 meters) respectively, can be attained. The VH839M 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 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

8 Port Video Balun Hub

Size 1 RU x 6.0"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
RJ45 Jack Connectors
Common Mode
Rejection
>70dB
Operating Frequency DC to 10 MHz
Recommended
Transmission Distance
w/passive units - Up to 750 feet (228 meters)
w/active units - Up to 3,000 feet (914 meters)
Transient Immunity Built-in
Shipping Weight 5 lbs
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

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.

NITEK - VH839 - 8 Port UTP Video Hub; Up to 1,000 ft with passive transceivers

back of VH839M
Product Specifications
Adobe .PDF
Word .DOC
CAD
VH839/1639/
839M/1639M Spec 
-- VH839 dwg
VH839 A&E Spec  VH839 A&E Spec  --
VH839 Manual -- --
Ordering Information
PART DESCRIPTION
VH839 8 Port UTP Video Balun Hub w/ surge suppression; up to 750 feet (228 meters)
VH1639 16 Port UTP Video Balun Hub w/ surge suppression; up to 750 feet (228 meters)
VH3239 32 Port UTP Video Balun Hub w/ surge suppression; up to 750 feet (228 meters)
VH839 works with the following equipment
VB37M BNC Male Video Balun; up to 750 feet (228 meters)
VB37F BNC Female Video Balun; up to 750 feet (228 meters)
VB39M BNC Male Video Balun w/ surge suppression;
up to 750 feet (228 meters)
VB39F BNC Female Video Balun w/ surge suppression;
up to 750 feet (228 meters)
TR515 BNC Female Video Balun w/ surge suppression;
up to 1,500 feet (457 meters)
TR560 Active Receiver w/ surge suppression;
up to 3,000 feet (914 meters)
VB41x4 4 Balun Card w/ surge suppression for Rack;
up to 750 feet (228 meters)
TR515x4 Active Receiver w/ surge suppression for Rack;
up to 1,500 feet (457 meters)
TR560x4 Active Receiver w/ surge suppression for Rack;
up to 3,000 feet (914 meters)
VH439 4 Port UTP Video Balun Mini-Hub w/ surge suppression; up to 750 feet (228 meters)
VH451 4 Port UTP Video Balun Mini-Hub w/ surge suppression; up to 1,500 feet (457 meters)
VH851 8 Port Active Receiver Hub w/ surge suppression; up to 1,500 feet (457 meters)
VH1651 16 Port Active Receiver Hub w/ surge suppression; up to 1,500 feet (457 meters)
VH456 4 Port UTP Video Balun Mini-Hub w/ surge suppression; up to 1,500 feet (457 meters)
VH856 8 Port Active UTP Receiver Hub w/ surge suppression; up to 3,000 feet (914 meters)
VH1656 16 Port Active UTP Receiver Hub w/ surge suppression; up to 3,000 feet (914 meters)
Products | Applications | Literature | News | About Us | Contact Us | FAQ | Document Notice | Usage Policy
NITEK - UTP, CCTV, and Twisted Pair Video Network Solutions