3 Board
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3-80
Huawei Technologies Proprietary
Issue 01 (2006-11-18)
DIP Switch DIP Bit Function
Setting Method
!
B_ID2/ID7: OFF
!
B_ID1/ID2: ON
S5
S6
4 Setting
of
clock
bus resistor
ON: Resistor available
OFF: Resistor not available;
DIP switches on the TRB that are located
at the end of clock bus are all set ON, and
other DIP switches are set OFF;
The location of TRB various according to
the type of the BTS:
BTS312: Frame 0
BTS3012A: Frame 2
3.22.2 Differences between REV.0 and REV.A
Differences are as follows:
!
The function of S2 on REV.0 is the combination of S1 and S2 on REV.A;
!
The function of S1 on REV.0 is the combination of S3 and S4 on REV.A;
!
The function of S3 on REV.0 is the combination of S5 and S6 on REV.A.
shows the REV.0 board layout.
Figure 3-52
TRB layout (REV.0)
ON
S1
F_ID3
F_ID2
F_ID1
F_ID0
B_ID2
B_ID1
ON
S2
ID6
ID4
ID3
ID7
ID2
ID5
S3
1 2 3 4 5 6 7 8
ON
The DIP switch IDs of the two versions is the same, and so are the DIP switch settings.
