C Ables - Sea Tel 4009-9 BROADBAND-AT-SEA Installation Manual

4009-9 Technical Specifications
20.12. Cables
20.12.1.
RS-422 Pedestal Interface
Type
Number of wires
Wire Gauge
Communications Parameters:
Interface Protocol:
Interface Connector:
20.12.2. Antenna L-Band IF Coax Cables (Customer Furnished)
Due to the loss across the length of the RF coaxes at L-Band, Sea Tel recommends the following 50 ohm
coax cable types (and their equivalent conductor size) for our standard pedestal installations. Type N
male connectors installed on the cables MUST be 50 Ohm connectors for the center pin to properly mate
with the female adapters we provide on the Base multiplexer panel and on the adapter bracket mounted
inside the radome next to the breaker box.:
Run
Length
<100 ft
up to
150 ft
up to
200 ft
Up to
300 ft
20.12.3. Multi-conductor Cables (Customer Furnished)
Due to the voltage loss 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:
Run Length
up to 50 ft
up to 100 ft
up to 150 ft
up to 250 ft
Up to 350 ft
Antenna Control Cable (Provided from ACU to the Base MUX)
Coax Typical. Loss @
Type 1750Mhz
LMR-240 10.704 db per
100 ft(30.48 m)
LMR-400 5.571 db per
100 ft(30.48 m)
LMR-500 4.496 db per
100 ft(30.48 m)
LMR-600 3.615 db per
100 ft(30.48 m)
Conductor Size
20 AWG (0.8 mm)
18 AWG (1.0 mm)
16 AWG (1.3 mm)
14 AWG (1.6 mm)
12 AWG (2.0 mm)
4009-9 Installation Manual
Shielded Twisted Pairs
6
24 AWG or larger
9600 Baud, 8 bits, No parity
RS-422
DE-9P
Shield Center
isolation Conductor
>90db 0.056 In.
(1.42 mm)
>90db 0.108 In.
(2.74 mm)
>90db 0.142 In.
(3.61 mm)
>90db 0.176 In.
(4.47 mm)
20-7
Installed
Bend
Size Radius
2.5 In. (63.5
mm)
4.0 in.
(101.6 mm)
5.0 In.
(127 mm)
6.0 In.
(152.4 mm)
Tensile
Strength
80lb
(36.3 kg)
160lb
(72.6 kg)
260lb
(118 kg)
350lb
(158.9 kg)