Sea Tel DTV04, Инструкция по установке и эксплуатации

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DTV04 HD TVRO Antenna Specifications
8-3
8.6. Environmental Conditions
Temperature: -30 degrees C to 55 degrees C.
Humidity: Up to l00% @ 40 degrees C, Non-condensing.
Spray: Resistant to water penetration sprayed from any direction.
Icing: Survive ice loads of 4.5 pounds per square foot. Degraded RF
performance will occur under icing conditions.
Rain: Up to 4 inches per hour. Degraded RF performance may
occur when the radome surface is wet.
Wind: Withstand relative average winds up to 100 MPH from any
direction.
Vibration: Withstand externally imposed vibrations in all 3 axes, having
displacement amplitudes as follows:
Frequency Range, Hz Peak Single Amplitude
4 - 10 0.100 inches (0.1G to 1.0G)
10 - 15 0.030 inches (0.3G to 0.7G)
15 - 25 0.016 inches (0.4G to 1.0G)
25 - 33 0.009 inches (0.6G to 1.0G)
Corrosion Parts are corrosion resistant or are treated to endure effects
of salt air and salt spray. The equipment is specifically
designed and manufactured for marine use.
8.7. Control and IF Coax Cables
8.7.1.
5 Coax cables are required for your antenna system. It is also recommended that a 6
th
cable be
installed as a spare. Due to the dB losses across the length of the RF coaxes at L-Band, Sea Tel
recommends the following 75 ohm coax cable types (and their equivalent conductor size) for our
standard pedestal installations:
Antenna L-Band TVRO IF Coax Cables (Customer Furnished)
Run Length Coax Type Conductor Size
up to 75 ft RG-6 or LMR-300-75 18 AWG
up to 150 ft RG-11 or LMR-400-75 14 AWG
up to 200 ft LDF4-75 Heliax 10 AWG
Up to 300 ft LMR-600-75 6 AWG
8.7.2.
Due to the voltage losses across the multi-conductor cables, Sea Tel recommends the following
wire gauge for the AC & DC multi-conductor cables used in our standard pedestal installations:
Multi-conductor Cables (Customer Furnished)
Run Length Conductor Size
up to 50 ft 20 AWG (0.8 mm)
up to 100 ft 18 AWG (1.0 mm)
up to 150 ft 16 AWG (1.3 mm)
up to 250 ft 14 AWG (1.6 mm)
Up to 350 ft 12 AWG (2.0 mm)
Type: Multi-conductor, Shielded
Gyro Compass Interface Cable (Customer Furnished)
Number of wires 4 Conductors for Step-By-Step Gyro, 5 for Synchro
Wire Gauge: see Multi-conductor Cables spec above
Insulation: 600 VAC