Power Supply - BT Inspiration Installation & Maintenance Manual

Power supply

Main Connector
Pin No. Definition
Pin 1 Ringing switch
Pin 2 -31 Volts Analogue
Pin 3 -40 Volts Digital
Pin 4 -35 Volts
Pin 5 -45 Volts
Pin 6 0 Volt Protect
Pin 7 Protective Earth
Pin 8 -40V Analogue
Pin 9 Ringing source
Pin 10 N/C
Pin 11 -40V Volts Protect
Pin 12 0 Volts Protect
12
Main connector
from PSU to the
Base Motherboard
6
BBU Connector from
Base Motherboard
Test Output
N/A
With respect to Pin 3 output +9Volts +/- 5%
Reference Pin for output voltages
With respect to Pin 3 output +5Volts +/- 3%
With respect to Pin 3 output -5Volts +/- 5%
N/A
Connected to system protective earth
As pin 3
N/A
N/A
With respect to Pin 12 -40Volts Internal S-Bus supply
Reference pin for internal S-Bus supply
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