Environmental Conditions (ADE) . Sea Tel 9497B-1

9497B-1 Technical Specifications 9497B-1 C/Ku-Band TVRO

8.6.

Environmental Conditions (ADE)

Temperature: -20 degrees C to 55 degrees C.

Humidity:

Spray:

Icing:

Rain:

Wind:

Vibration:

Frequency Range, Hz

4 - 10

10 - 15

15 - 25

25 - 33

Corrosion

Up to l00% @ 40 degrees C, Non-condensing.

Resistant to water penetration sprayed from any direction.

Survive ice loads of 4.5 pounds per square foot. Degraded RF performance will occur under icing conditions.

Up to 4 inches per hour. Degraded RF performance may occur when the radome surface is wet.

Withstand relative average winds up to 100 MPH from any direction.

Withstand externally imposed vibrations in all 3 axes, having displacement amplitudes as follows:

Peak Single Amplitude

0.100 inches (0.1G to 1.0G)

0.030 inches (0.3G to 0.7G)

0.016 inches (0.4G to 1.0G)

0.009 inches (0.6G to 1.0G)

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.

Cables

8.7.1.

Antenna Control Cable (Provided from ACU-MUX)

RS-422 Pedestal Interface

Type Shielded Twisted Pairs

Number of wires

Wire Gauge

Communications Parameters:

Interface Protocol:

Interface Connector:

24 AWG or larger

9600 Baud, 8 bits, No parity

RS-422

DE-9P

8.7.2.

Antenna L-Band TVRO IF Coax Cables (Customer Furnished)

2, 4 or 6 cables are required dependant upon which feed/LNB configuration your antenna is fitted with.

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:

Run Length Coax Type Conductor Size up to 75 ft up to 150 ft up to 200 ft

LMR-300-75

RG-11 or LMR-400-75

LDF4-75 Heliax

18 AWG

14 AWG

10 AWG

Up to 300 ft LMR-600-75 6 AWG

For runs longer that 300 feet, Sea Tel recommends Single-mode Fiber Optic Cables with Fiber Optic converters.

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9497B-1 C/Ku-Band TVRO 9497B-1 Technical Specifications

8.7.3.

AC Power Cable Above Decks (Customer Furnished)

Voltage: 110 or 220 volts AC, 50/60 Hz., single phase

Power: 100 Watts MAX, pedestal only

8.7.4.

Gyro Compass Interface Cable (Customer Furnished)

Type: Multi-conductor, Shielded

Number of wires

Wire Gauge:

Insulation:

4 Conductors for Step-By-Step Gyro, 5 Conductors for Synchro see Multi-conductor Cables spec above

600 VAC

8.7.5.

Fiber Optic Transmitter (CFE Optional)

Model: Ortel Model 3112A

Frequency Range:

Noise Figure:

Impedance:

Connectors:

RF

Fiber

950-2050 MHz

45 dB

75 ohm

Type F

FC/APC "Tight Fit”

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9497B-1 Technical Specifications

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9497B-1 C/Ku-Band TVRO

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