ND-71548 (E) CHAPTER 3
Page 77
Issue 2
INSTALLATION PROCEDURE
Figure 008-4 Example Connection Diagram-DC-DC Converter for Message Waiting Lamps
NAP-200-008
Sheet 6/13
Connection of Power and Ground
Cables from the Power Equipment
Note: The current capacity of the DC-DC Converter is calculated by multiplying the (current capacity of
the message waiting lamp) by the number of telephone sets.
PBX
IV(WHITE)
+80V
DC-DC
CONVERTER
OUTPUT
INPUT
G+80V
G
–48V
IV (BL)
IV (R)
IV (G)
TO RECTIFIER
F
G