Huawei BTS3 Series, Руководство по описанию аппаратуры

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M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3 Board
Issue 01 (2006-11-18) Huawei Technologies Proprietary 3-75
DIP
Switch
DIP Bit Meaning Default
Setting
S12 4 Bit 1 and 2 control the remote software loading
function of MCK (Main Clock Unit). Bit 3 and 4 is for
the reserved use.
Bit 1 and 2 should cooperate with each other.
Table 3-
43 shows the setting of S12.
ON: E1 transmission line grounded;
OFF: E1 transmission line not grounded.
All ON
Table 3-41 shows the mapping between local OML timeslot and S9 setting when the BSS
system adopts chain cascading topology.
In chain cascading topology, the timeslots of the OMLs can only be selected from the five
values in
Table 3-41 .
Table 3-41
Mapping of S9 setting and OML timeslot
Bit 2 Bit 3 Bit 4 OML Timeslot
ON ON ON 31
ON ON OFF 30
ON OFF ON 29
ON OFF OFF 28
OFF ON ON 27
Table 3-42 shows the mapping between local OML timeslot and S9 setting when the BSS
system adopts star cascading topology.
In star cascading topology, the timeslots of the OMLs can only be selected from the four
values in
Table 3-42 .