Huawei BBU3900 Installation Manual page 52

Appendix
a
Setting the DIP Switches
No. Function
1 to 5 Defining the communication address of
the PMU
6 Selecting baud rate for communicating
with the BTS
7 and 8 Reserved and not defined
Set the DIP switches of
the PMU.
Operation
(1) Switches 1 to 5 correspond to bits
0 to 4. ON:1; OFF: 0
For example: to set the address of
PMU to 3, set switches 3 to 5 as
OFF.
(2) Default setting before delivery:
1 (BIT0), ON
2 (BIT1), ON
3 (BIT2), OFF
4 (BIT3), OFF
5 (BIT4), OFF
Set as ON, indicating that the baud
rate is 9600. (If it is set as OFF, the
baud rate is 19200.)
Set as OFF
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