Huawei BBU3900 - 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

Table 3-23 DIP switch SW1 on the UTRP
DIP
Switch
DIP Status Description
1 2 3 4
SW1 OFF OFF OFF OFF Balanced
Mode
ON ON ON ON Unbalanced
Mode
Other settings of the DIP bits Disabled
Table 3-24 DIP switch SW2 on the UTRP
DIP
Switch
DIP Status Description
1 2 3 4
SW2 OFF OFF OFF OFF Balanced
Mode
ON ON ON ON Unbalanced
Mode
Other settings of the DIP bits Disabled
CAUTION
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
DIP Status Description
1 2 3 4
SW3 OFF OFF ON ON T1 Mode
ON ON OFF OFF The E1
impedance is
set to 120
ohms.
3 BBU3900 Equipment
BBU3900
Hardware Description
3-22 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 11 (2010-11-10)