Nera SatLink 1000, Руководство пользователя

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Nera SatLink Terminal User Guide – Revision P
113
Appendix L. Cable Specification
This appendix provides the cable specification for the cables to be used between the ODU and the Nera
SatLink IDU. Two separate cables are require; one cable for the transmit (Tx) signal and one cable for the
receive (Rx) signal.
L.1 Cable Requirements
Frequency range:
950-1450 MHz, Tx
950-2150 MHz, Rx
Maximum attenuation:
25 dB, Tx
9 dB + 10logR dB, Rx
R: Minimum symbol-rate (Msps)
Maximum DC resistance:
2.5
Ω
(Tx)
Screening effectiveness:
>60 dB at 1000 MHz
Impedance:
75 Ohm
Connectors:
F-type
Environmental requirements:
Temperature:
-50
°
C to 80
°
C
Humidity:
0 to 100% (Condensing)
Atmosphere:
Salt, Pollutants and Contaminants as Encountered in Coastal and
Industrial Areas
L.2 Approved cable types
We recommend using cables from Times Fiber.
Type AFU Number Outside
diameter (mm) Attenuation at
1000 MHz
(dB/100m) Screening at
1000 MHz
(dB) DC-resistance
(
Ω
/km)
6-series T3088-101M 6.93 21.46 110 40
11-series T3093 10.2 13.88 75 30.4
500-series T24502 14.2 8.30 100 5.61
Table 11: Cables from Times Fiber
For the Rx-cable, amplifiers (or attenuators) may be used. No amplifiers or attenuators must be used on
the Tx-cables.
Recommended connectors:
Moisture proof crimp connectors suitable for the 6-series (AFU no. 531-WF6R) and the 11-series (AFU
no. 531-WF11RP). Connector for the 500-series: TBD.