ADC Telecommunications Inc. PSM0804A Manual Do Utilizador

ADCP-77-177  • Issue 

1 • July 2011

©2011 ADC Telecommunications, Inc.

A Prism system can report a Duplexer Mismatch Alarm. This alarm is used to 

ensure that the Duplexer is being used with the correct frequency bands. 
For example, the PRU/URU supports an 850 Duplexer and an 850 APAC Duplexer. 

The 850 Duplexer handles 869-894 MHz, whereas the 850 APAC Duplexer 

supports 870-890 MHz. The Host DART can support either band, but if you attempt 

to configure a frequency between 869-894 MHz with the 870-890 MHZ Duplexer, 

the system will generate a Duplexer Mismatch Alarm.
Previous versions of PRU/URU hardware did not have the Duplexer programmed. 

If this is the case, then a Duplexer Mismatch Alarm will be reported. Prism releases 

that are 6.0.0.12 or higher include a Duplexer Programming Utility, which allows 

field programming of the Duplexer through its Low Noise Amplifier (LNA).

The name of the utility is LNAconfig and it is available via a telnet session into the 

Remote Unit.
The steps to program through the Duplexer Programming Utility are:
1 Ensure that your laptop Network-Interface Connection (NIC) is configured for 

DHCP.

2 Access the Hardware Inventory report for the Host and Remote Unit(s):

a In the System Menu bar, click System Information > Get Information,.
b In the Reports panel Type list, select Hardware Inventory.
c Determine the IP address for the Host and Remote Unit(s).
d Determine the number of the LNA that you want to program; see 

3 Login to the Host using telnet or ssh.
4 From the Host, login to the Remote Unit using the following command, where 

 is the Remote Unit ID (1 - 8):

 

5 Log on to the Remote Unit as root.

a Type: root 
b Enter the following Password: ADCfwu

6 At the prompt, type: LNAconfig