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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.

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.

Technical Specs 
 Transceiver Unit
Size 5.5″ (W) x 1.8″ (H) x 4.6″ (D)
Power Requirements 24 VAC 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 >70dBNV-452R
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
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