Description:
8 port video balun hubs with built-in surge suppression. Systems operate with other
Nitek UTP video equipment including, Video balun
hubs, standard video balun transceivers or active
receivers. These units feature RJ45 jack connections for quick and reliable connections.
The VH839M video balun hubs are multichannel
video transmission devices that provide a low cost
means of sending 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 VH83M9 can send
video up to 750 feet (228 meters) when used with other products in
the VB37 or VB39 family. When used with model TR515 or TR560 active
receivers, distances of 1,500 feet (457 meters) and 3,000 feet, (914 meters) respectively,
can be attained. The VH839M is designed to provide superior immunity from
noise and interference, such as RFI and EMI. |
Features:
- Quality video over ordinary twisted pair cable
- Built-in protection from power surges and transients
- High immunity to noise and interference
- Passive units require no power
- Video & P/T/Z over a single pair with “up-the-coax”
systems when used with passive baluns
- Highly compact, only one rack unit in height
- Conveniently integrates with Nitek modular systems
- Video can be run in the same cable with telephone,
computer signals and power
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8 Port Video Balun Hub
| Size |
1 RU x 6.0"D |
| Power Requirements |
NONE REQUIRED |
| Video Input Connection |
Standard BNC connector for
1 Vpp composite video
monochrome or color |
| Video Format |
RS170, NTSC, PAL, SECAM,
CCIR (Color or B/W) |
Twisted Pair
Connection |
RJ45 Jack Connectors |
Common Mode
Rejection |
>70dB |
| Operating Frequency |
DC to 10 MHz |
Recommended
Transmission Distance |
w/passive units - Up to 750 feet (228 meters)
w/active units - Up to 3,000 feet (914 meters) |
| Transient Immunity |
Built-in |
| Shipping Weight |
5 lbs |
Wire Spec |
26 to 12 AWG unshielded
twisted pair (UTP) |
|
DC Loop Resistance |
51 Ohms/1,000 feet (max)
(51 Ohms/304 meters) |
|
Normal Capacitance |
17pF/ft. |
|
Impedence |
100 Ohms +/- 20% |
|
UTP Category |
2 or better |
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Wire and Cable Recommendations
Twisted Sender is recommended for use with unshielded twisted pair (UTP) wiring. The systems will operate over wire gauges from 26 AWG through 12 AWG but are optimized for 24
AWG. Category cabling may be used. Individually shielded pairs should be avoided as they drastically reduce the operating range of the systems. Multi-pair cable with an overall shield is acceptable. Video can be operated in the same communication cable coexistent with telephone, computer, control signals, power voltages and other video signals. While video may be routed through telephone punch-down block terminals, any bridge-taps, also called T-taps and any resistive, capacitive or inductive devices MUST BE removed from the pair.
For more specific information regarding wire types, gauges and proper installation techniques, please call (800) 528-4343 for technical assistance.
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back of VH839M
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| PART |
DESCRIPTION |
| VH839 |
8 Port UTP Video Balun Hub w/ surge suppression; up to 750 feet (228 meters) |
| VH1639 |
16 Port UTP Video Balun Hub w/ surge suppression; up to 750 feet (228 meters) |
| VH3239 |
32 Port UTP Video Balun Hub w/ surge suppression; up to 750 feet (228 meters) |
VH839 works with the following equipment |
| VB37M |
BNC Male Video Balun; up to 750 feet (228 meters) |
| VB37F |
BNC Female Video Balun; up to 750 feet (228 meters) |
| VB39M |
BNC Male Video Balun w/ surge suppression;
up to 750 feet (228 meters) |
| VB39F |
BNC Female Video Balun w/ surge suppression;
up to 750 feet (228 meters) |
| TR515 |
BNC Female Video Balun w/ surge suppression;
up to 1,500 feet (457 meters) |
| TR560 |
Active Receiver w/ surge suppression;
up to 3,000 feet (914 meters) |
| VB41x4 |
4 Balun Card w/ surge suppression for Rack;
up to 750 feet (228 meters) |
| TR515x4 |
Active Receiver w/ surge suppression for Rack;
up to 1,500 feet (457 meters) |
| TR560x4 |
Active Receiver w/ surge suppression for Rack;
up to 3,000 feet (914 meters) |
| VH439 |
4 Port UTP Video Balun Mini-Hub w/ surge suppression; up to 750 feet (228 meters) |
| VH451 |
4 Port UTP Video Balun Mini-Hub w/ surge suppression; up to 1,500 feet (457 meters) |
| VH851 |
8 Port Active Receiver Hub w/ surge suppression; up to 1,500 feet (457 meters) |
| VH1651 |
16 Port Active Receiver Hub w/ surge suppression; up to 1,500 feet (457 meters) |
| VH456 |
4 Port UTP Video Balun Mini-Hub w/ surge suppression; up to 1,500 feet (457 meters) |
| VH856 |
8 Port Active UTP Receiver Hub w/ surge suppression; up to 3,000 feet (914 meters) |
| VH1656 |
16 Port Active UTP Receiver Hub w/ surge suppression; up to 3,000 feet (914 meters) |
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