Panel
There are five types of USCU: USCUb11, USCUb12, USCUb14, USCUb22, and USCUb21,
as shown in Figure 3-45 and Figure 3-46. The USCUb11, USCUb12, and USCUb14 have the
same exterior. The USCUb22 and the USCUb21 have the same exterior.
Figure 3-45 USCUb11, USCUb12, and USCUb14 panel
Figure 3-46 USCUb22 and USCUb21 panel
(1) GPS port
(2) RGPS port (3) TOD port (4) M-1PPS port (5) BITS port
NOTE
l The USCUb11, USCUb12, and USCUb14 have silkscreens USCUb11 , USCUb12 and USCUb14
indicating their board types on the lower left corner of the board panel, respectively.
l The USCUb22 and USCUb21 have silkscreens USCUb22 and USCUb21 indicating their board types
on the lower left corner of the board panel, respectively.
Functions
The USCU has the following functions:
l The USCUb11 provides ports to communicate with the RGPS (for example the reused
equipment of the customer) and BITS equipment. It does not support GPS signals.
l The USCUb12 contains an RT satelliate card, which does not support RGPS signals.
l The USCUb14 contains a UBLOX satelliate card, which does not support RGPS signals.
l The USCUb22 does not support RGPS signals. It uses a Naviors satellite card, which must
be purchased locally and installed onsite.
l The USCUb21 does not support RGPS signals. It uses a K161 satellite card, which must
be purchased locally and installed onsite.
BTS3900C (Ver.C)
Hardware Description 3 BTS3900C Modules
Issue 03 (2013-05-27) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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