Installing the Device
2.5 Connecting a GPS Antenna
1
3
2
1
Normally Open
2
Common
3
Normally Closed
Figure 2.4
Failsafe Alarm Relay Wiring
2.5
Connecting a GPS Antenna
NOTICE
A PTP card must be installed in the RUGGEDCOM RSG2288 for GPS, IRIG-B, and PPS
capabilities. For more information, refer to
"Precision Time Protocol (PTP) Support
.
For increased signal coverage and improved performance, the GPS antenna is
intended to be installed in a remote location separate from the RUGGEDCOM
RSG2288. The signals received from the GPS satellite network are at a frequency
of 1575.42 MHz. The GPS antenna must therefore have a clear view of the sky
to receive the low power signals and track the maximum number of satellites.
Structures, such as rooftops, that are clear of obstructions and have a clear view of
the horizon are ideal.
IMPORTANT
A site survey is recommended prior to any installation to help determine the best
location for the GPS antenna. For assistance, contact a Siemens Sales representative.
IMPORTANT
Although it is impossible to protect the antenna from a direct lightning strike, the
antenna and connected components can be protected from secondary effects
through site selection and by installing protection devices.
Install the antenna at least 15 m (49 ft) away from and lower than any structures
that attract lightning. GPS antenna damage is usually not the result of a direct
lightning strike, but due to high currents induced by the effects of a lightning strike
on a nearby structure. Lightning arrestors should also be installed in the antenna
RUGGEDCOM RSG2288
Installation Manual, 04/2021, C79000-G8976-1045-17
17
