Motorola DIMETRA MTS 2, Инструкция по установке, настройке и базовому обслуживанию

Страница: 63 / 517

MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual GPS Antenna
GPS Antenna
The GPS antenna must be mounted high enough to clear the peak of the MTS site roof. For systems in the
northern hemisphere, the GPS antenna should be mounted so that a clear view of the southern sky is maintained.
For systems in the southern hemisphere, the GPS antenna should be mounted so that a
clear view of the northern sky is maintained.
For more information about GPS antenna installation and cabling, refer to "GPS Antenna
Connection" section in Chapter 4, "Hardware Installation" .
The GPS antenna has to be installed below the tallest point on the tower, pole or roof.
Surge Arrestors
Proper surge protection should be installed on all antennas to prevent potential damage to the MTS 2 and MTS 4.
Please refer to "Surge Arrestors and Suppliers" section in Appendix A, "Field Replace-
able Units (FRUs)" for more information.
Lightning arrestors should be installed to transport lightning strikes away from the equipment.
Install a lightning rod on a tower leg other than the leg to which you mount the antenna.
X.21/E1 Network Interface Considerations
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■
■
Per any local regulations, a surge arrestor may be required at the X.21 or E1 service entrance.
The arrestor should be designed for operation with a X.21 or E1 circuit. The arrestor typically
is only installed on the customer side of the X.21 or E1 service entrance. It should be wired per
manufacturer instructions. Please refer to
"Surge Arrestors and Suppliers" section in Appendix A,
"Field Replaceable Units (FRUs)" for more information.
6802800U74-N September 2009
3-11