VH4-56
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VH4-56
Nitek VH456 4-Port Active Video Mini-Hub with Surge Suppression.
Product Description
The VH456 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 VH456 can be used on video runs up to 3000′ (900m) when used with passive transmitters or distances of up to 6000′ (1800m) with the Nitek TT560 active transmitter. 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 ground loop isolation
- Built-in surge suppression
- 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
- Built-in video loss detection
- Video and PTZ over a single pair (with “up-the-coax” systems)
- RJ45 or push terminals for easy connection
Tech Specs
| Size | 5.5″ (W) x 1.8″ (H) x 4.6″ (D) |
| Power Requirements | 12-24 VAC/VDC 300mA max. Class 2 (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 |
Up to 3,000 feet (900 meters) w/passive baluns
– Up to 6,000 feet (1,800 meters) |
| 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 |