MobileAccess 1000 System, Руководство по установке и настройке

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MobileAccess™ 1000/1200 Appendices
UM-1000, Revision 2.2 35
Answer. As stated above, the APC polished connector is the most robust and reliable
solution and is the only recommendation of MobileAccess.
However existing backbone with UPC polished connectors could be used if they were
tested and found to have less than -45 dB back reflection and less than 0.5 dB loss per
mated pair connection.
Again, the end to end performance of each fiber link should meet or exceed the
MobileAccess specifications. As long as this occurs, MobileAccess will warrant system
performance. However, fiber backbone performance degradation will be a principle
suspect if system performance issues arise in the future. Issues resulting from a
degradation of the fiber backbone performance are not warranted by MobileAccess.
I have heard that there is an 8 degree APC and a 12 degree APC polish. Which of
these is compatible with Mobile Access Equipment? 10.
Answer. The 8-degree angled APC polish is compatible with our equipment. This is by far
the most popular APC polish available on the market. So much so, that it is usually referred
to as simply "APC".
There is a 12 degree angled APC polish available as well, but it is rare. This 12 degree
angled polish is not compatible to MobileAccess equipment and should not be mated to an
8 degree APC. It is however acceptable for use in the fiber backbone.
What are the various connectors that MobileAccess would recommend? 11.
Answer.
1.
SC/APC (Most popular connector, Quick push-pull mating)
2.
LC/APC (Small form factor (SFF), there is a good chance that this will replace the
SC/APC as the most popular connector in the U.S. but there are competitors shown
below)
3.
LX.5/APC (SFF, Not extremely popular yet, Has backing of some vendors)
4.
Diamond E2000/APC (Excellent but expensive and not extremely popular outside of
Europe. Especially popular in Germany.)
5.
FC/APC (Generally replaced by the SC/APC - Uses a threaded coupling nut, secure
even in high vibration environments but does not permit quick connection)
6.
MU/APC (SFF, half the size of the SC/APC, more popular in Japan)
7.
Diamond F3000/APC (SFF, new, not popular, could be compatible to the LC)
Once again, it must be noted that the SC/APC is the only connector type that may be
directly connected to the MobileAccess antenna system products.