User's Manual

Site Preparation – continued
Apr 2001
57
SC
TM
4812ET RF and Power Cabinet Hardware Installation Manual
DRAFT
0 mm
(0”)
0 mm
(0”)
230 mm
(9”)
446 mm
(17.5”)
546 mm
(21.4”)
82 mm
(3.2”)
Figure 2-9: SC 4812ET Power Cabinet Conduit I/O
49 mm
(1.9”)
217 mm
(8.5”)
FW00195
RGPS Mounting
Considerations
The RGPS Head requires specific mounting considerations in order to
properly observe the GPS satellites.
– The mounting pipe for the RGPS Head should be mounted
vertically with less than five degrees of tilt.
– The RGPS Head needs to have a clear view of the sky, preferably to
within ten degrees of the horizon in all directions. The less sky that
can be observed the fewer the number of potential satellites that can
be tracked and hence the poorer the RGPS performance.
– For general operation, the RGPS Head needs to be able to
continuously track signals from at least four (4) GPS satellites. It is
theoretically possible to operate the BTS with only one GPS
satellite visible, however, operating in this mode it is not
recommended and requires an accurate site survey.
2