Agilent Technologies Auroraduet N1726A, User Manual, Page: 189 / 507

aurora
Duet
- User Guide
4 - 48 422685
To check that this is the case, look at the BERT SYNC
LED. Steady Green means that the patterns are
synchronised. If they are out of step, check that the
remote end is looping back and sending the same pattern
as your aurora
Duet
.
Injecting single bit errors
During a BER test, aurora
Duet
lets you inject single bit
errors into the transmitted data stream.
Ø Press F4 ERR to inject a single bit error.
The bit error count BIT ERRS increases by one.
Tip
A useful method of confirming that the test is working
properly is to inject a single bit error at the start of a test,
and check that it is detected.
Injecting multiple bit errors
You can inject multiple bit errors automatically, into the
transmitted data stream, during a BER test. The ratio of
errors injected depends on what is specified in the
ERROR INSERT option in the BERT SETUP menu - see
Setting up BERT Operation in this section.
Ø Press F5 AUT to inject multiple bit errors.
Errors are injected and the bit error count increments.
Ø To stop automatic error injection, press F5 OFF .
Resetting the BERT counters
You can reset the counters back to zero and restart the
clock, while a BER test is running.
Ø Press F3 CLR to reset the counters and the elapsed
time.
Chap4s2.PM6 17/06/99, 09:43 48