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VH851

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Overview

The VH851 is an eight-port active video hub with dual outputs, built-in surge suppression, ground loop isolation, gain/loss control, and video detection. Systems operate with other Nitek UTP video equipment including, video transceiver hubs, standard video balun transceivers, active transmitters, or any twisted pair equipped camera. Multi-channel video receiver hubs provide excellent video quality through two video outputs per channel. Twisted pair installations are made with a choice of the standard screw terminal connections, or the modular jack connections featured on the M series. The VH851 can receive video up to 1,500 feet (450 meters) when used with passive transmitters. These hubs provide superior immunity from noise and interference, even when run in common raceways with AC power.

Features

  • Dual video output distribution
  • Screw terminals or RJ45 modular jack connectors
  • Quality video over ordinary twisted pair Built-in surge suppression
  • Built-in ground loop isolation
  • Convenient access to DIP switches for accurate gain and loss control
  • High immunity to noise and interference LED’s to indicate video detection
  • Easy to set up and install
  • Limited Lifetime Warranty
  • Designed, tested, manufactured, and supported in the U.S.A.

Technical Specs

Power Requirements
  • 12-24VAC/VDC, 450mA
Video Input
  • Balanced low voltage current loop
Video Output
  • 1 Vpp composite video Monochrome or Color
Common Mode Rejection
  • >70dB
Twisted Pair Connection
  • VH851 – Screw terminals
  • VH851M – RJ45 modular jacks
Video Format
  • PAL, SECAM, NTSC, RS170, CCIR (Color or B/W)
Wire Spec
  • 26 to 18 AWG twisted pair
DC Loop Resistance
  • 51 Ohms/1,000 feet
Nominal Capacitance
  • 17pF/ft
Impedance
  • 100 Ohms +/- 20%
Category Wire
  • 2 or better
Operating Frequency
  • DC to 10 MHz
Environmental / Temperature
  • Operating: 0°C to 50°C/ -32°F to 122°F
  • Storage: -40°C to 85°C / -40°F to 185°F
  • Humidity: Up to 95% non-condensing
Mechanical Dimensions (W x H x L)
  • 1 card slot
Shipping Dimensions (W x H x L)
  • Package:
  • Weight: 7lbs

Warranty Information

Limited Lifetime Warranty