Installation Guide

RadioFrame System
Operations and Maintenance
RFN_3.1 Beta 123
NCU back ports
5MHz/1PPs OUT BNC connector for timing interface
GPS ANT GPS antenna connection
Each card installed in the front and back of the NCU has two LEDs: Power (top)
indicates power, and Status (lower) indicates the status of the card. Each RJ45
port has two LEDs: Link (right) indicates Ethernet connectivity, and Activity (left)
blinks to indicate Ethernet activity. All LEDs should light as green. For all other
conditions, refer to the following table.
Indication Possible failure Corrective action
Power and Status LEDs
for cards installed in
front or back of NCU are
not lit
no power to NCU
 Verify that the power cord is
installed and properly seated.
 Verify that the power source is
operational (120VAC or
–48VDC).
 Contact Customer Support.
Status LED is red—top
front card only
timing source not
available
 Connect the timing source. In
iDEN installations, this is usually
the iSC-3. In some cases, the
timing source is the GPS
antenna.
 Check all connections.
failed initialization
 Reboot the system: unplug the
NCU, and plug it in again. Boot
up may take several minutes.
fan is not working
 Verify that the fan is operational.
 If the fan is not working, unplug
the NCU and contact Customer
Support.
Status LED is red—any
card
card is not operational
 Remove and reseat card.
 Contact Customer Support.
RJ45 port Link and
Activity LEDs are not lit,
or the Activity LED is not
blinking
connection is not being
made between RFS
components
 For the affected port, verify that
all cabling between components
is properly connected.