Table 3-23 Dip Switch Sw1 On The Utrp; Table 3-24 Dip Switch Sw2 On The Utrp; Table 3-25 Dip Switch Sw3 On The Utrp - Huawei BBU3900 Hardware Description

3 BBU3900 Equipment

Table 3-23 DIP switch SW1 on the UTRP

DIP
Switch
SW1

Table 3-24 DIP switch SW2 on the UTRP

DIP
Switch
SW2
SW1 and SW2 are set to OFF (balanced mode) by default. When the eight E1s are faulty, all the
DIP bits of SW1 and SW2 should be set to ON to rectify faults. SW1 corresponds to E1s No.4
to No.7 and SW2 corresponds to E1s No.0 to No.3.

Table 3-25 DIP switch SW3 on the UTRP

DIP
Switch
SW3
3-22
DIP Status
1 2
OFF OFF
ON ON
Other settings of the DIP bits
DIP Status
1 2
OFF OFF
ON ON
Other settings of the DIP bits
CAUTION
DIP Status
1 2
OFF OFF
ON ON
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 4
OFF OFF
ON ON
3 4
OFF OFF
ON ON
3 4
ON ON
OFF OFF
BBU3900
Hardware Description
Description
Balanced
Mode
Unbalanced
Mode
Disabled
Description
Balanced
Mode
Unbalanced
Mode
Disabled
Description
T1 Mode
The E1
impedance is
set to 120
ohms.
Issue 11 (2010-11-10)