
Chapter 6 175
BERT Testing
Measuring RF Loopback BER with Option 300
Making Loopback BER Measurements
The following procedure shows you how to configure the frame count, set pass/fail limits and
set early stop criteria for loopback BER measurements.
1. Press
Configure Measurement > Measurement Mode BER/BLER% Search to BER/BLER%.
2. Press
BER/BLER% Configure > BER% TCH/FS Configure.
3. Press
Frame Count > 100 > Enter.
4. Press
Pass/Fail Limits > Class II RBER > 2 > %.
5. Press
Return > Threshold # of Events to Stop > Class II Bit Error > 300 > Enter.
Notice that the
Class II Bit Error softkey is highlighted, 300 events is displayed beneath the
softkey, and Stop Thrs: CII(300) appears in the status area of the display.
Figure 6-10
6. Press the
Trigger hardkey to start the measurement:
You will see Pass or Fail displayed on the lower left corner of the screen, when either of
the following occurs:
• The measurement completes normally; in this case, after 100 frames.
• The measurement terminates early, due to the designated number of events to stop
being reached.
Refer to Figure 6-11 on page 176.
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