VH451
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VH451
The VH451 is a four port active video mini-hub with gain and loss control, built-in surge suppression, ground loop isolation 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. These active video mini-hubs are multi-channel video receiver devices that provide a low cost means of receiving quality live video over category UTP cabling.
Product Description
The VH451 is a four port active video mini-hub with gain and loss control, built-in surge suppression, ground loop isolation 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. These active video mini-hubs are multi-channel video receiver devices that provide a low cost means of receiving 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 VH451 can be used on video runs 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
Features
• 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
• Immunity to noise and interference
• LED’s to indicate video detection
• Compact design Video can be run in the same cable with telephone, computer signals and power
• Made in the U.S.A.
Tech Specs
| Size | 5.5″ (W) x 1.8″ (H) x 4.6″ (D) |
| Power Requirements | 24 VAC 300mA max. Class 2
(Wall transformer provided with |
| 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 | Up to 1,500 feet (450 meters) w/passive baluns |
| Transient Immunity | Built-in |
| Temperature Range | -20 degrees C to +55 degrees C |
| Humidity Range | 0 to 98% non-condensing |
| Shipping Weight | 3 lbs |
| 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. |
| Impedance | 100 Ohms +/- 20% |
| UTP Category | 2 or better |
Downloads
VH451 Specification Sheet Last Updated: September 14, 2017
VH451 Installation Manual Last Updated: September 14, 2017