Solutions for Outdoor Sites

Many applications require that either one, or both ends, of a signal transport link be located at an outdoor site, or an indoor site that may not be conducive for one reason or another to the operation of sensitive electrical and/or fiberoptic equipment. Such equipment may be housed in a NEMA enclosure for protection against weather, etc. These enclosures are designed to permit convenient and secure mounting of access points in difficult or outdoor environments. NEMA enclosures meet the National Electrical Manufacturers Association standards for performance and protection of the electrical and fiberoptic equipment installed within them. Enclosures are given a NEMA rating according to the types of applications and protection that the enclosure serves.

NEMA/EEMAC Type 4, 12, 13 and NEMA Type 4 enclosures are available with dual redundant power supplies to support the following types of fiberoptic signal transport:

Jenco ODU

  • 50 – 3000 MHz Analog L-Band RF
  • 1 – 20 MHz Reference Clock
  • IRIG-B
  • 3G HD-SDI, SMPTE 424M Video
  • HD-SDI, SMPTE 292M Video
  • Dual Link DVI Video
  • VGA & Component Video
  • DVB-ASI Video
  • SD-SDI, SMPTE 259M Video
  • 12-Bit & 8-Bit Composite Video
  • S-Video
  • AES/EBU Digital Audio
  • Balanced/Unbalanced Analog Audio
  • Gigabit Ethernet
  • 10/100 Ethernet
  • USB 1.1/2.0 Serial Data
  • RS-422/485 Duplex Serial Data
  • RS-232 Duplex Serial Data
  • Contact Closure

A brief description of NEMA ratings is as follows.

NEMA 4 enclosures are constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure. NEMA 4 enclosures are used in many applications where an occasional washdown occurs or where machine tool cutter coolant is used. They also serve in applications where a pressurized stream of water will be used. NEMA 4 enclosures are gasketed and the door is clamped for maximum sealing.

NEMA 12 enclosures are constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibers, and against dripping and light splashing of liquids. Gasketed doors seal the enclosure's contents from airborne contaminants and non-pressurized water and oil.

NEMA 13 enclosures are constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibers, and against the spraying, splashing, and seepage of water, oil, and non-corrosive coolants.