NEC UNIVERGE SV8500 - Page 694

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CHAPTER 5 Operation Procedure for System with PIR
(4) The figures below show the power supply system for PIR and TSWR.
Figure 5-21 Power Supply to PIR
Note:
RGU and HOW activate by ACT/ST-BY.
Figure 5-22 Power Supply to TSWR
DC-DC
CONV
RGU
HOW
SUB
RGU
PWR 0
-48V
+5V, +12V, -5V
CR (for LC)
HOW (for LC)
PWR
NFB
DC-DC
CONV
RGU
HOW
SUB
RGU
PWR 1
PWR
NFB
-48V
AC-DC Converter
AC-DC Converter
AC
AC
DC-DC
CONV
-48V
PWR 0
-48V
+5V, +12V, -5V
DC-DC
CONV
PWR 1
REL
-48V
REL
-48V+80V
-48V
+80V