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3 Board
DIP
Switches
and Jumpers
SW4
J30
J28
J3
J17
For SW3 and SW4, the target address for the main control software downloading is 090XXX
(IP address of lower bit, hexadecimal). The DIP switch that is used to set IP addresses is on
the top-right of the board. For details, see
3-62
Meaning
SW3 are used to set the IP address (129.9.x.x) of NE
and provides the higher 4 bits defining the third
segment of IP address (0–15).
ON stands for "0", and OFF stands for "1".
The jumper J30 is for the setting of the 48/24 V
feeding of board order wire:
When short-circuiting 1-2, feeding is set as –24 V
!
DC.
When short-circuiting 2-3, feeding is set as –48 V
!
DC (default setting).
J28 controls the charge of storage battery:
When short-circuiting 2–3, the configuration
!
information will be lost after the board is powered
off.
When short-circuiting 1–2, the configuration
!
information will be not lost after the board is
powered off (default setting).
Short-circuiting 1–2 is recommended.
J3 is the jumper related to the loading for
programmable logic components. Please short-circuit
1–2.
J17 is the jumper related to the loading for
programmable logic components. When the circuit is
open, the chip is used to load the programmable logic
component. When short-circuiting 1–2, the CPU is
used to load the programmable logic component
(default setting). Short-circuiting 1–2 is
recommended.
Huawei Technologies Proprietary
M900/M1800 BTS3X Series Base Transceiver Station
Figure
3-42.
Hardware Description Manual
Default Setting
-
Short-circuiting
2–3
Short-circuiting
1–2
Short-circuiting
1–2
Short-circuiting
1–2
Issue 01 (2006-11-18)
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