Huawei BTS3 Series, Hardware Description Manual

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M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3 Board
Issue 01 (2006-11-18) Huawei Technologies Proprietary 3-15
Figure 3-11
CMB layout
S1
1 2 3 4
ON
S3
1 2 3 4
ON
S5
1 2 3 4
ON
S4
1 2 3 4
ON
S2
1 2 3 4
ON
!
The DIP switch of the CMB is set before delivery. Do not change the settings unless
necessary.
!
The CMB is the backplane of common resource frame. Its DIP switch is behind the TMU.
It can be seen after the TMU is removed.
Table 3-9 lists functions of DIP switches on the CMB.
Table 3-9
CMB DIP switch description
DIP
Switch
DIP Bit Function Setting Method
S1 4 Define cabinet
number: 0–7
OFF: 1; ON: 0
The binary bits are used to indicate the cabinet
number: Bit 1 is MSB (high bit); Bit 4 is LSB
(low bit);
If cabinet number is 5 (0101), the DIP switch
setting is as follows:
!
Bit 1: ON
!
Bit 2: OFF
!
Bit 3: ON
!
Bit 4: OFF