Table 3-28 Tdu Ports - Huawei BTS3 Series Hardware Description Manual

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual

Table 3-28 TDU ports

ID
CKB1
CKB2
DCF1
DCF2
EAC1
EAC2
Issue 01 (2006-11-18)
Type Meaning
DB25 Clock signal port of
combining cabinet
DB25
DB37 Data signal port of
combining cabinet
DB37
DB37 External alarm input
port
DB25
Huawei Technologies Proprietary
Indication
The functions of CKB1 and CKB2 are the
!
same.
CKB1 and CKB2 match both clock signal
!
combining cabinet cable and CKM-
matched connector.
The connectors are used in the following
!
cases:
a. The BTS is installed on both ends of the
clock bus.
b. The BTS is single cabinet configuration.
In combining cabinet configuration, if the
!
BTS serves as the primary cabinet, its
clock signals are led out from CKB1 and
CKB2; if the BTS serves as a secondary
cabinet, the clock signals are led in from
CKB1 and CKB2.
The functions of DCF1 and DCF2 are the
!
same.
DCF1 and DCF2 match both data
!
combining 3. The connectors are used in
the following cases:
a. The BTS is installed on both ends of the
clock bus.
b. The BTS is single cabinet configuration.
In combining cabinet configuration, if the
!
BTS serves as the primary cabinet, its
data signals are led out from DCF1 and
DCF2; if the BTS serves as a secondary
cabinet, the data signals are led in from
DCF1 and DCF2.
For external extension alarm signals input.
It cannot be connected with environment
monitoring instrument.
For external extension alarm signals input.
It can be connected with environment
monitoring instrument.
3 Board
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