M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3 Board
Issue 01 (2006-11-18)
Huawei Technologies Proprietary
3-79
Figure 3-51
TRB layout of the BTS312 and the BTS3012A
ON
S1
S2
F_ID3
F_ID2
F_ID1
F_ID0
B_ID2
B_ID1
ON
S3
S4
ID6
ID4
ID3
ID7
ID2
ID5
S5
1 2 3 4 5 6 7 8
ON
S6
lists functions of DIP switches on the TRB. Note that S1 and S3, S2 and S4, and
S5 and S6 must be set together.
Table 3-45
TRB DIP switches of the BTS312 and the BTS3012A
DIP Switch DIP Bit Function
Setting Method
S1
S3
4 Indicates
cabinet
number: 0–7
OFF: 1
ON: 0
The binary bits are used to indicate the
cabinet number: F_ID3/ID6 is MSB (high
bit); F_ID0/ID3 is LSB (low bit);
If cabinet number is 5 (0101), the DIP
switch settings are as follows:
!
F_ID3/ID6: ON
!
F_ID2/ID5: OFF
!
F_ID1/ID4: ON
!
F_ID0/ID3: OFF
S2
S4
4 Indicates
frame
number: 0–3
OFF: 1
ON: 0
The binary bits are used to indicate the
frame number: B_ID2/ID7 is MSB (high
bit); B_ID1/ID2 is LSB (low bit);
The frame should be numbered from
bottom to top starting from 0;
If frame number is 2 (10), the DIP switch
settings are as follows: