Motorola DIMETRA MTS 2, Installation, Configuration And Basic Service Manual

Page: 236 / 517

Displaying Base Radio Alarms Chapter 6: Con
fi
guration and Testing
Procedure 6-9 How to Verify the Receiver (Continued)
9
Type
ppr -orxch1 -a1000 –r1
to analyze the received RF signal quality of the Base
Radio. Record the results.Example readout is below with expected results/ speci
fi
cations:
Receiver Number = 1 2 3
SGC Attenuation (dB) = 4 4 4
Sync Location (1/10 symb)= 50 42 27
Sync.
Amplitude (dB) = -83 -94 -104
Total Bits/Msgs = 4320 4320 4320
Bits/Msgs in Error = 4 1965 1904
BER/MER (%) = 1.593 45.486 44.074
RSSI (dBm) = -117 -121 -131
BER value is below 4% and RSSI is within the acceptable range.
10
Type
ppr –orxch1 –a1 –r200
to check for small peaks of interference. Record the results.
11
Repeat the two previous steps for all receiver branches.
12
Disconnect the equipment.
13
Repeat procedure for all remaining Base Radios.
Displaying Base Radio Alarms
In the Site Controller procedures, the base radios were connected to the Site Controller and received
downloaded test software through the BR-Site Controller Ethernet link. If necessary, reset the base
radio to obtain the password prompt, or enter the Test Application mode of the BR.
Procedure 6-10 Display Outstanding Base Radio Alarm Conditions
1
When prompted, type the proper password. After entering the correct password, the prompt is
displayed on the service terminal.
2
•
BR Application:
Type
get alarms
This command displays all alarms for this Base Radio together with its current states
(active/inactive).
•
BR Test Application:
Type
alarms -ofault_hndlr
This command displays all the all active alarms on the Base Radio.
When using Test Application, the fault management engine can be disabled.
In such case
no alarms will be visible.
•
To display current FM state:
dev> fme -ofault_hndlr
•
To enable FM:
dev> fme -ofault_hndlr -son
•
To disable FM:
dev> fme -ofault_hndlr -soff
6-28
6802800U74-N September 2009