Wmpt - Huawei BTS3900C Hardware Description

BTS3900C (Ver.C)
Hardware Description
Figure 3-16 Positions of DIP switches on the UMPT
Each DIP switch has four bits. The DIP switches have the following functions:
l
l
Table 3-13 DIP switch SW1
DIP
Switch
SW1
Table 3-14 DIP switch SW2
DIP
Switch
SW2

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.
Issue 03 (2013-05-27)
SW1 is used to select the E1/T1 mode.
SW2 is used to select the grounding mode of E1/T1 transmission.
DIP switch.
DIP Status
1 2
ON ON
OFF ON
ON OFF
DIP Status
1 2
OFF OFF
ON ON
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Table 3-13 describes the DIP switch.
3 4
Reserved Reserved
3 4
OFF OFF
ON ON
3 BTS3900C Modules
Table 3-14 describes the
Description
The E1 resistance is set to
75 ohms.
The E1 resistance is set to
120 ohms.
The T1 resistance is set to
100 ohms.
Description
Balanced
Unbalanced
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