Difference Between The Tcb Rev.0 And The Ver.b - Huawei BTS3 Series Hardware Description Manual

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
DIP
Switch

3.16.3 Difference Between the TCB REV.0 and the VER.B

The panels of the TCU REV.0 and TCB VER.B are the same. The indicator status is also the
same. The difference between them is that the TCB REV.0 has no DIP switch S1.
Issue 01 (2006-11-18)
Function DIP
Bit
Bit 3
Bit 4
Huawei Technologies Proprietary
Setting Method
Bit 3 is set to decide whether the clock is
driven by the TCU:
If bit 3 is set to OFF, it indicates that the driving
!
of the BTS clock is enabled.
bit 3 is set to OFF, it indicates that the
If
!
driving of the BTS clock is disabled.
If no cabinets are combined, bit 3 must be
set to OFF. All the bits of S7 on the TCB
are set to ON. This indicates that the BTS
clock in this cabinet is directly driven by
the TMU in this cabinet.
In combined cabinets, bit 3 is set to OFF.
And all bits of S7 on the TCB are set to
OFF. This indicates that the BTS clocks of
all the combined cabinets are driven by the
TCU in this cabinet.
Bit 4 is set to decide whether the TMU
clock in this cabinet can be enabled in the
TCU:
If bit 4 is set to ON, it indicates that the
!
TMU clock is disabled in the TCU.
If bit 4 is set to OFF, it indicates that the
!
TMU clock can be enabled in the TCU.
If no cabinets are combined, bit 4 must be
set to ON. All the bits of S7 on the TCB
are set to ON. This indicates that the TMU
clock is directly sent to the TRX in this
cabinet instead of entering the TCU.
In combined cabinets, bit 4 in the primary
cabinet is set to OFF. This indicates that
the TMU clock in this cabinet can drive
the TCU in the same cabinet. Bit 4 in the
secondary cabinet is set to ON, this
indicates that the TMU clock cannot drive
the TCU in the same cabinet.
And all bits of S7 on TCBs in both the
primary and secondary cabinets are set to
OFF. This indicates that the BTS clocks of
the primary and secondary cabinets are
driven by the TCU.
3 Board
Default
Setting
OFF
OFF
3-51