Nitek : VB39M
Description
The Nitek Video Balun Transceiver for Twisted Pair VB39M video balun transceiver is a video transmission device that provides a low cost means of sending live video over unshielded twisted pair, point-to-point wiring for distances up to 750 feet. The VB39M is compatible with all of the up-the-coax control systems. A basic system uses (2) VB37 or (2) VB39 units, one at each end of a twisted pair of wires. These units are intended for use over existing in-house telephone wiring, Category wiring or other twisted pair cable runs to provide a convenient, costeffective alternative to coax. The VB39M is designed to provide superior immunity from noise and interference even when running next to line power!
Features
VB39M features include:
- Quality video over ordinary twisted pair cable
- Built-in surge suppression
- Built-in ground loop isolation (When used with an active receiver)
- 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
- Easy to install and configure
- Video can be run in the same cable with telephone, computer signals and power
- Intra-building CCTV installations (instead of coaxial cable)
- Structured cabling (Category 5) environments
- To eliminate requirement for Plenum Coax
- Multi-camera applications through conduit (more cameras through a smaller diameter)
Specifications
| Transceiver Unit Size | 1.3 H x 2.0 W x .95 D |
| Transceiver Unit Input | 1 Vpp composite video Monochrome or Color |
| Transceiver Unit Output | Balanced low voltage current loop |
| System | (2 transceivers required) |
| System Video Format | PAL, SECAM, NTSC, RS170, CCIR (Color or B/W) |
| System Video Input | 1 Vpp composite video Monochrome or Color |
| System Operating Frequency | DC to 10 MHz |
| System Common Mode Rejection | >60 dB |
| Wire Size | 26 to 18 AWG twisted pair |
| Wire DC Loop Resistance | 51 Ohms/1,000 ft (max) |
| Wire Nominal Capacitance | 17 pF/ft |
| Wire Impedance | 100 Ohms - 20% |
| Category Wire | 2 or better |
| Temperature Range | -40°C to 85°C |
| Humidity Range | 0 to 98%, non-condensing |
| Transient Immunity | 6000 V 1,2uS x 50 us Per ANSI / IEE 587 C62.41 B3 3000 A 8us x 20 us when ground screw terminal is connected to earth-ground |
| Enclosure Material | Black, ABC flame retardant plastic |
| Twisted Pair Connection | Screw terminals |
| Shipping Weight | 1 lb |
Resources & Documents
| vb39m.pdf | Datasheet |