1-48
IM AQ1300-01EN
Calculation Criterion for Result
The AQ1300/AQ1301 uses this setting to select the variation value from the statistically processed
values. During statistical processing, the value that you specified with the measurement resolution
specifies the class interval, and the size of the statistically processed values is split into 60 classes.
The AQ1300/AQ1301 sets the percentile value to the largest value that is within the class that
contains the value that corresponds to the threshold value.
• Example of the 75th percentile: In a single period of the test duration, 5000 values (statistically
processed values) were measured. Starting from the
first measurement, the value that corresponds to 75% is
measurement number 3750. Each class contains a certain
number of statistically processed values, and the percentile
value is set to the largest value within the class that contains
measurement number 3750.
Statistical value (number of samples)
500 samples
0.01 ms
0.02 ms
0.02 ms
•
•
•
0.04 ms
2000 samples
0.07 ms
0.07 ms
0.08 ms
•
•
•
0.10 ms
1500 samples
0.11 ms
0.12 ms
0.12 ms
•
•
•
0.14 ms
200 samples
0.16 ms
0.16 ms
0.17 ms
•
•
•
0.18 ms
. . .
Class 1
0.00 ms to
0.05 ms
Class 2
0.05 ms to
0.10 ms
Class 3
0.10 ms to
0.15 ms
Class 4
0.15 ms to
0.20 ms
. . .
The threshold is the 75th percentile. In this example, this
corresponds to sample number 3750, which is in this class.
However, the AQ1300 displays the maximum value of this
class as the percentile value.
Example: 5000 samples
Resolution: 0.05 ms
Percentile value = 0.15 ms
Pass/Fail Judgment
You can perform pass/fail judgments by setting the delay variation threshold (the variation value’s
upper limit) on the AQ1300/AQ1301 in advance.If the value exceeds the threshold, a fail judgment
occurs.
1.16 RFC2544 Measurement (AQ1300 Option)
