Hughes Network Systems HN9000, Руководство по установке, Страница: 44 / 154

Installing the IFL cables
Before you can point the antenna, you must route the IFL cables between the indoor satellite
modem location and the antenna. Then you connect the modem and the antenna by connecting
the IFL cable to both components.
(See also Requirements for IFL cables, connectors, and ground blocks on page 12.)
Routing and connecting the IFL cables
To point the antenna, you must connect the modem to the antenna and install the DAPT (a
Hughes tool that displays antenna pointing values.)
1. Route the IFL cables from the indoor satellite modem location to the antenna.
The routing path depends on the building configuration. Guidelines for installing IFL cables
are included in the
Antenna Site Preparation and Mount Installation Guide (1035678-0001).
2. Connect the transmit IFL cable to the transmit connector on the radio transmitter.
(The transmit cable is not shown in
Figure 19: In-line connection of the DAPT on page 28.)
3. Connect the receive IFL cable to the DAPT, as shown in Figure 19: In-line connection of
the DAPT on page 28.
Figure 19: In-line connection of the DAPT
For additional information on pointing and the DAPT, see the
Ka-Band Antenna Pointing
Guide
(1037663-0001).
4. Use a temporary cable to connect the DAPT to the LNB on the radio assembly as shown in
Figure 19: In-line connection of the DAPT on page 28.
This is a temporary arrangement that is required for antenna pointing.
Note: The connectors on the DAPT are labeled IDU and LNB. If the cable from the
satellite modem (the IDU) and the cable from the radio assembly on the antenna are
connected to the wrong connectors, the DAPT will not receive a signal.
IFL grounding requirement
The coaxial IFL cables and the ground block to which they are connected must meet the grounding
requirements specified in the following warning:
HN9000 Satellite Modem Installation Guide
28
1037576-0001 Revision E
Installing outdoor equipment and antenna
pointing
Chapter 4