User's Manual Part 2

Pre–Power–up Tests – continued
Mar 2001
2-7
SCt4812T CDMA BTS Optimization/ATP
DRAFT
POWER INPUT
TOP OF FRAME
BREAKER PANEL
LPA
BREAKERS
C–CCP
BREAKERS
4
GND
5 6
1
2 3
TX OUT
CAUTION
LIVE TERMINALSLIVE TERMINALS +27 VDC
LFR/ HSO
Figure 2-3: +27 V BTS DC Distribution Pre-test
Breakering:
 Two LPAs on each trunking backplane breakered together
 Designed for peak LPA current of 15 amps (30 amp breakers)
 Unused TX paths do not need to be terminated
 Single feed for C–CCP
 Dual feed for LPA
FW00298
1D
1B
2B
2D
1C
1A
2A
2C
30
30
30
30
30
30
30
30
3D
3B
4B
4D
3C
3A
4A
4C
50
50
50
1
2
3
C
C
P
L
P
A
C
. . . continued on next page
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