Merlin 3070 Service And Maintenance Manual page 21

Auxiliary Power Unit
The Auxiliary Power Unit connects to the
unit in systems with many accessories or
Aux Power light: Goes on when the
Auxiliary Power Unit is connected to
the Power Module of the control unit.
Aux Power jack: Connects via dc cord
(supplied) to the Auxiliary Power jack on
the Power Module of the control unit.
AC Output jack: Connects the ac power
cord from the control unit.
AC Input connector: Connects power
cord to an ac outlet.
The graph below indicates when an Auxiliary Power Unit is necessary.
Total number of
5-, 10-, & 34-button
voice terminals,
and Hands-Free Units
Control unit power
supply is sufficient
Power Module to provide extra power to the control
34-button deluxe voice terminals.
100
80
60
40
20
10
One Auxiliary Power Unit
is necessary
30
20
Total number of 34-button
deluxe voice terminals
Two Auxiliary Power Units
are necessary
50
40
19