Table 3-29 Tdu Dip Switch Setting - Huawei BTS3 Series Hardware Description Manual

3 Board
ID
TME1
TRA1
TRA2
TRB1
TRB2
There is only one clock selection DIP switch (2-bit) on the TDU.

Table 3-29 TDU DIP switch setting

Bit 1
OFF
ON
OFF
3-54
Type Meaning
DB37 E1 transmission
signal conversion
port
DB37 Built-in optical
transmission signal
conversion port
DB37
DB37
DB37
Bit 2 Meaning
OFF In the cabinet group, bit 1 and bit 2 of the basic cabinet in the basic
!
cabinet group are set as OFF and OFF respectively.
In the combined cabinets, bit 1 and bit 2 of basic cabinet is set as OFF
!
and OFF respectively.
OFF Disable
ON Disable
Huawei Technologies Proprietary
M900/M1800 BTS3X Series Base Transceiver Station
Indication
This socket is used in the following cases:
When ABB or ABA is not configured and
!
120-ohm transmission cable is adopted,
this socket is connected with lightning
protection board using conversion cable to
introduce E1 signal.
When ABB or ABA is not configured,
!
this socket is connected with TRA1 using
conversion cable to introduce E1 signal.
For details, refer to information concerning
cable installation in installation manual of
corresponding BTS.
The functions of TRA1 and TRA2 are the
!
same, and so are the functions of TRB1
and TRB2. In optical transmission mode,
these ports can all be used to lead in the
E1 signals converted at TEU.
The conversion slot corresponding to
!
TEU0 is TRA1 and TRA2, and that
corresponding to TEU1 is TRB1 and
TRB2.
TRA1, TRA2, TRB1 and TRB2 can be
!
used to lead E1 signals to other cabinets.
When ABB or ABA is configured, TRA1
!
and TRA2 are used to convert the signal.
For details, refer to information concerning
cable installation in installation manual of
corresponding BTS.
Hardware Description Manual
Table 3-29 lists its functions.
Issue 01 (2006-11-18)