User's Manual

Troubleshooting

ACU back ports

RJ45 Ports 1-8 RFUs—up to 8 RFUs may be connected to the ACU

5MHz/1PPs IN not currently used

5MHz/1PPs OUT not currently used

GPS ANT not currently used

Each card installed in the front and back of the ACU 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 Cause What to Do

Power or Status LEDs

for cards installed in

front or back of ACU

are not lit

no power to ACU

• Verify that the power cord is

installed and properly seated.

• Verify that the power source is

operational.

• Contact Customer Support.

Status LED is red—any

card

card is not operational

• Remove and reseat card.

• Contact Customer Support for a

replacement card.