Copyright © July, 2011
Microsemi
Page 12
Rev.A03
Analog Mixed Signal Group
2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, ROW: (949) 221-7100 Fax: (949) 756-0308
Midspan.
Table 3-1: Power Status Indications
Indicator Color Main
Power
Status
Remarks
Power
Indicator
Off
Power supply
unit is
unplugged
Green
Power input
active
Power supply voltage
is within limits
Green light
blinks once
every
second
(only if
power
backup is
connected)
Midspan power
supply failure
(disconnected
or out of
voltage range)
Unit receives backup
power and continues to
function normally.
Maintenance measures
should be taken
whenever possible.
Table 3-2: Port Status Indications PD-90xx Series
Port LED
Color
Port Load
Conditions
Port Voltage
Off
Inactive load or
unplugged port
Power to port is
disconnected. No DC voltage
present on port output lines.
Green
Active load is
plugged in and
complies with normal
load conditions.
Continuous nominal DC
voltage is present on spare
pairs
Green blinks
once every
second
Overload or short
circuit
Power to port is
disconnected. No DC voltage
is present on port output
lines.
