Main Remote Access Units
InterReach Spectrum Remote Access Unit Installation Guide
Page 7
TECP-77-222 • Issue
1 • August 2012
© 2012 TE Connectivity Ltd.
MRAU
LEDs
REV IF OUT
REV SECONDARY PORTS
1 2 3
FWD SECONDARY PORTS
1 2 3
FWD IF IN
LINK
STATUS
4
1
5
2
3
Ref #
LED
LED Color
Description
1
FWD SECONDARY PORT
(1 - 3)
2
LINK
3
STATUS
4
REV SECONDARY PORT
(1 - 3)
5
FWD IF IN
• Green
• Downstream unit correctly connected; unit has no alarms or a
Minor alarm is active.
• Blinking Green
• SRAU or band is set out-of-service.
• Yellow
• FWD cable connected to SRAU, no REV cable connected.
• Blinking Yellow • FWD and REV cables are not connected to the same port number
(incorrectly paired).
• Red
• Major alarm in downstream unit, fault lockout, or SRAU
disconnected.
• Off
• No SRAU previously connected.
• Green
• MRAU receiving communications from the IFEU.
• Red
• MRAU has not received communications from the IFEU for more
than 90 seconds.
• Off
• During initial power up, MRAU is powering up and waiting for IFEU
communications.
• Green
• Unit has no alarms or a Minor alarm is active.
• Blinking Green
• Unit or band is set out-of-service.
• Red
• Major alarm detected.
• Green
• Downstream unit correctly connected, unit has no alarms or minor
alarm
• Blinking Green
• SRAU or band is set out-of-service.
• Blinking Yellow • FWD and REV cables are not connected to the same port number
(incorrectly paired).
• Red
• Major alarm in downstream unit, fault lockout, or SRAU
disconnected.
• Off
• No SRAU previously connected.
• Green
• MRAU is powered on correctly.
• Yellow or
Blinking Yellow
• There is an IFEU FWD connection, but there is no IFEU REV
connection or the IFEU REV connection is paired incorrectly.
• Off
• Cable is not connected to the IFEU FWD port.