User's Manual

MC-Series High-Power System System Configuration Changes
998--01 Rev X1
RadioFrame Networks, Inc. CONFIDENTIAL AND PROPRIETARY 123
RadioBlade Transceiver BER Test
This section covers the method to use to measure receiver BER and determine whether
each RadioBlade transceiver passes. Testing is organized by sector to minimize the need
to move the Sig Gen leads. Because you are testing an MC-Series system that is not in
service, you can simply leave the leads connected to the sector Rx port at TOR for the
duration of the tests on that sector. The testing method follows a nested loop
(summarized in F.3, “Testing Strategy”) until all blades either pass or fail. Once testing on
a given RadioBlade transceiver has been completed (step 7), you repeat the test steps
for the next transceiver. Once a given sector is completely tested, you move the leads to
the next sector input port and repeat the test for each blade in the next sector.
1 Set the Motorola R2660 to generate an in-bound 1 x 6 test signal at the desired
frequency and signal level into the Rx port that corresponds to the RadioBlade
transceiver to be tested.
2 Determine the receive sensitivity threshold. Start at –120 dBm, and then increase in
2 dB increments until the BER drops below 2%. The receive sensitivity value should
be less than –106 dBm at 2% BER.
3 Determine the max. level threshold. Start at –48 dBm and increase in 2 dB
increments until the BER goes above 2%. The maximum input power should be
greater than –40 dBm at 2% BER.
4 If either of the values called for in steps 2 and 3 is not attained, the RadioBlade
transceiver has failed specifications and should be replaced.
5 Display the RadioBlade Control page (Figure 81), and make sure the RadioBlade
transceiver that is to be tested is not locked. If it is locked, unlock it.
If you are unlocking the blade, refresh the page every 30 seconds until the State of
the RadioBlade transceiver has changed to ‘UEA’, approximately 3 minutes.
6 Select the Diagnostics tab (Figure 82), and then select Bit Error Rate Test.