User's Manual

On-Line Commissioning 79
1 At the OMC, make sure that the BTS is in a locked state.
2 Disconnect the appropriate antenna cable from cabinet. This cable will correspond to the
TRX which you are testing. See Section 2-6 for additional RF cabling information.
3 Ensure that the OMC is configured so that the BCCH is on the TRX you are testing.
4 Connect the dummy load to the “out” port of the RF Power Meter.
5 For each TRX, connect the “in” port of the RF Power Meter to the RFD as follows.
6 At the OMC, change the BTS state to unlocked.
7 Note the output power of the TRX on the power meter; this will be displayed in either Watts
or dBm.
8 Complete these steps for each TRX in turn until you have tested them all.
If a TRX falls out of the margins, interWAVE recommends that you perform a Racal test to
determine the serviceability of the TRX.
5-3.4 RX BER Measurements
The objectives of this test are to verify the performance of the Receive path of the BTS and the
operation of the RX module in the TRX. Before these tests can take place the BTS must be returned to its
original “on air” working state with call processing possible.
1 From an Xterm window on the OMC, telnet to the BSC controlling the BTS to be tested, or
alternatively connect directly to the BSC with the Craft PC.
2 From the BSC prompt find the IP address of the BTS by typing:
HD:bsc-> ifShow “ppp” [ENTER]
A list of PPP connections will then be displayed. Look for the IP address of the BTS you will
be testing. The last number of the “192.168.5.x” address relates to the BtsMgr number of
the BTS.
3 From the BSC prompt type the following to connect to the BTS:
HD:bsc-> rlogin “192.168.5.x” [ENTER]
If this is successful you will receive the bts-> prompt.
4 From the BTS prompt type the following to activate the RX BER logging:
bts-> log_none [ENTER]
bts-> log_lapdm [ENTER]
bts-> setdontarray 0x43,0 [ENTER]
The procedure for BCCH reconfiguration can be found in the Network
Configuration section of the WAVEView OMC Configuration Guide
.