Black Box COMPACT T1 - Manual (Page 36)

32 Compact T1 - Release 6.1
Quick Start
Power Supplies
Power Supplies
115 VAC/-48 VDC Power Supply
The power supply card has two LEDs, as described in the table
below.
LED State Description
AC Input Off AC input missing or failure
Green AC input present
Battery Off Battery input not used
Green Battery charging or operating
from DC source only.
Yellow Battery discharging
Red Battery low (less than 42V),
ringer disabled