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VH3251

The VH3251 is a 32 port active video hubs with built-in surge suppression, ground loop isolation, gain and 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.

Description 

The VH3251 is a 32 port active video hubs with built-in surge suppression, ground loop isolation, gain and 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.
These active video 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 VH3251 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.

Features 

• Quality video over ordinary twisted pair cable
• 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
• LEDs to indicate video detection
• Highly compact, only one rack unit in height
• Video can be run in the same cable with telephone, computer signals and power

Technical Specs 
 Transceiver Unit
Size 1 RU x 9.5″ (D)
Power Requirements 24 VAC @ 800mA
(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 1,500 feet (450 meters) with passive transceivers
Transient Immunity Built-in
Temperature Range -20 degrees C to +55 degrees C
Humidity Range 0 to 98% non-condensing
Enclosure Type Standard 19″ rack 1 RU in height
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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