Huawei BTS3900C User Manual

Figure 3-16 Positions of DIP switches on the UMPT
Each DIP switch has four bits. The DIP switches have the following functions:
l SW1 is used to select the E1/T1 mode. Table 3-13 describes the DIP switch.
l SW2 is used to select the grounding mode of E1/T1 transmission. Table 3-14 describes the
DIP switch.
Table 3-13 DIP switch SW1
DIP
Switch
DIP Status Description
1 2 3 4
SW1 ON ON Reserved Reserved The E1 resistance is set to
75 ohms.
OFF ON The E1 resistance is set to
120 ohms.
ON OFF The T1 resistance is set to
100 ohms.
Table 3-14 DIP switch SW2
DIP
Switch
DIP Status Description
1 2 3 4
SW2 OFF OFF OFF OFF Balanced
ON ON ON ON Unbalanced
3.1.6 WMPT
The WCDMA main processing and transmission unit (WMPT) processes signals for the
BBU3900 and manages resources for other boards in the BBU3900.
BTS3900C (Ver.C)
Hardware Description 3 BTS3900C Modules
Issue 03 (2013-05-27) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
37

Huawei BTS3900C Specifications

General

Brand	Huawei
Model	BTS3900C
Category	Server
Language	English