Agilent Technologies OmniBER 718 SDH User Manual page 141

Making Measurements
Measuring Jitter Tolerance
9 Choose the ERROR THRESHOLD.
If ANY ERRORS is chosen, any BIP or BIT error will result in a FAIL.
If BIT ERRORS is chosen, choose a value between 1 and 1,000,000 to determine
the bit error threshold for the jitter tolerance PASS/FAIL decision.
BER>= shows the bit error ratio calculated from the bit error threshold choice and
the dwell time choice.
10 Press
The measurements progress can be monitored on the
end of the test the results can be viewed on the
displays. The
the results remain on the
measurement is made.
HOW TO: View the Results
1 Choose the results FORMAT.
If
ITU-T mask is displayed.
If
Point number, Frequency, Mask amplitude, Tolerance, Result.
140
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to start the jitter auto tolerance measurement.
RUN/STOP
display is cleared when
TRANSMIT
RESULTS
is chosen, a plot of the jitter tolerance results against the
GRAPH
is chosen, the results from which the graph is constructed are displayed,
TEXT
display. At the
TRANSMIT
or
TRANSMIT RESULTS
is pressed but
TRANSMIT
display until the next jitter tolerance