Globalstar GSP-2800, Руководство по установке

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Specifications for Cables
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Appendix B. Specifications for Cables
Any cable used to connect the RAU and junction box must meet the
following requirements.
Conductors
Requirements are listed in Table 13.
Insulation
The individual conductors shall be insulated with semirigid
insulation. The insulation shall be rated for at least 250 volts over a
temperature range of -540 to +85 degrees C. The insulation shall be
color coded so that each conductor is coded with a unique color.
Conductors 1 and 2 shall be insulated with black and red insulation,
respectively. Conductors 3 and 4 shall be insulated with blue and
white insulation, respectively.
Jacketing
The cable must be jacketed with a durable, all-weather jacket of
polyvinyl chloride or thermoplastic elastomer. The jacket must be
UV resistant and rated for a temperature range of -50 to +85 degrees
C. It must protect the cable from the elements and/or water
immersion. The jacketed cable shall be both durable and flexible.
Environmental Requirements
Requirements are listed in Table 14.
Performance Criteria
Cable shall not degrade after exposure to the following conditions.
The generic test data shall be made available on request by supplier.
Criteria are listed in Table 15.
Table 13. Conductor Requirements
Conductor Number Description
1 to 2 To be used to transfer DC power to the radio. Must
be 14 AWG (19/0.404) tinned copper wire (19/26)
wire, unshielded, twisted pair). The conductors
shall have a DC resistance not greater than 3.2 m
ohm/ft at 80 degrees C.
3 to 4 To be used to carry telephone signals. Must be 24
AWG solid copper twisted pair (1 turn per 38.1 mm)
Table 14. Environmental Requirements
Operating temperature -50 to +85 degrees C
Storage temperature -50 to +85 degrees C
Altitude 0 to 3,000 meters above Sea
Level
Relative humidity 5 to 100%, with
condensation
Table 15. Performance Criteria
Heat resistance 24 hours at 85 degrees C
Fluid resistance 24 hours at 50 degrees C
JP-4 Fuel (MIL-T-5624
Hydraulic fluid (MIL-H-5606
Lubricating oil (MIL-L-23699)
Lubricating oil (MIL-L-7808)
5% NaCl, 0-S-1926
De-icing fluid (MIL-A-8243)
Water