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BTS3900E GSM
User Guide
LED
MOD
5.1.4 DIP Switch on the BTS3900E
There is only a 4-bit DIP switch on the BTS3900E.
The 4-bit DIP switch is located in the BTS3900E cabling cavity, as shown in
Figure 5-5 Position of the BTS3900E DIP switch
Table 5-4
Table 5-4 Default settings of the 4-bit DIP switch
Setting
1
ON
The 4-bit DIP switch performs the following functions:
l
Issue 01 (2010-01-15)
Color
State
ON
Blinking (ON for 0.125s and
OFF for 0.125s)
Green
ON
Blinking (ON for 0.5s and OFF
for 0.5s)
describes the default settings of the 4-bit DIP switch.
2
3
ON
OFF
Bits 1 and 2 are used to specify whether the BTS3900E is a basic module or an extension
module and the transmission mode, as described in
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Description
4
OFF
Basic module, 75-ohm E1 transmission, RX not
grounded
Table
5 BTS3900E Hardware
Description
The FE connection is normal.
The FE port is receiving or
transmitting data.
The BTS3900E module is a basic
module.
The BTS3900E module is an
extension module.
Figure
5-5.
5-5.
5-7
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