RadioFrame Networks Inc DH2 User Manual

Page of 164
RadioFrame System 
Appendixes 
RFN_3.1 Beta  
147 
Appendix C  NCU and ACU Main Rack Installation 
The RadioFrame System NCU and one ACU are mounted in the main rack prior 
to shipment to the site. Complete the following three procedures to install the 
NCU and main rack ACU: 
• 
Mount the NCU in the Main Rack 
• 
Mount the ACU in the Main Rack 
• 
Connect the NCU to the ACUs 
 
Mount the NCU in the Main Rack 
The NCU is the main controller of the RadioFrame System. The NCU is mounted 
in the main rack supplied with –48VDC power.  
1  Find these items in the NCU shipping container: one NCU, four mounting 
screws, one coaxial cable with two male BNC connectors for connecting to 
the iSC, and one set of product documentation. 
2  Mount the NCU only in an EIA-standard compliant (19”) rack using all 4 
screws provided. Refer to the site documentation for the exact location of the 
NCU. For safe operation, follow these guidelines: 
• 
Do not mount the NCU in any orientation other than that specified in the 
following illustration. 
• 
Mount the NCU so that both the front and the back are accessible. 
• 
If the mounting holes do not line up, adjust the NCU up or down until the 
mounting holes line up. 
• 
 
 
Caution 
Do not block the air vents on the sides or rear of the NCU. 
 
3  Plug the NCU into main rack power source (rectifier or PDU). 
4  Verify that the NCU is receiving power and that each NCU card is 
operational. 
Each card installed in the front and back of the NCU has two LEDs: Power 
and Status. All LEDs should light green. 
 
 
Note 
The Status LED on the top card in the front of the NCU will remain red until the 
NCU is connected to a timing source.