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12713140-003-2 Revision E.01 – January 2007
SSU-2000e Technical Reference 255
Chapter 5 Antennas
Installing Antennas
Cutting Antenna Cables
Symmetricom recommends that you coil excess cable to avoid gain mismatch
between the GPS antenna and the radio receiver. Coiling the excess cable also
allows you to use the factory-installed crimped connector.
Symmetricom
does not
recommend cutting the antenna cables provided in the GPS
Antenna Kits. If you must cut the cables, please ensure that the following
requirements are met.
Be aware of these cable and connector requirements before cutting antenna cables:
Cable Requirements
– The total cable length from the radio receiver to the
antenna must not be shorter than the minimum cable lengths indicated in the GPS
Antenna Kits
).
Connector Requirements
– The cables provided with the GPS Antenna Kit have
factory installed crimped connectors. If you cut these cables, you must supply and
add a connector. Symmetricom recommends that you use only crimp-style N-type
connectors in the Crimper Kit for this application (see
Installing the Antenna
This section provides installation procedures for installing the GPS antenna.
Caution:
To avoid damage to the connectors, do not use the
connectors to pull the cable. If at all possible, avoid bundling the
coaxial cable with other cables (and possible noise sources). Use
appropriate cable-pulling devices when pulling the coaxial cable
through conduit or a weather head.
Note:
Follow local building electrical codes when installing the GPS
antenna.
Содержание SDU-2000e
Страница 10: ...Table of Contents 10 SSU 2000e Technical Reference 12713140 003 2 Revision E 01 January 2007 ...
Страница 242: ...Chapter 4 NTP and SNMP SNMP Protocol 242 SSU 2000e Technical Reference 12713140 003 2 Revision E 01 January 2007 ...
Страница 354: ...Index Z Z 354 SSU 2000e Technical Reference 12713140 003 2 Revision E 01 January 2007 ...