•
Low Level
The Low Level is the mean of the lower dBER/dTh distribution. It is
calculated as:
•
Mean Level
The Mean Level is the middle between the High and Low Levels,
calculated as:
•
Amplitude
The Amplitude is the difference between its High and Low Levels.
•
Threshold Margin
The Threshold Margin is the distance between the upper and the
lower BER curves at the position given by the BER Threshold setting.
The noise result parameters are summarized in the following table:
Table 23
Parameter Name
Pass/Fail
High Level Std. Dev
Low Level Std. Dev
Peak Peak Noise
max
Signal/Noise Ratio (RMS)
min
Signal/Noise Ratio (Peak Peak)
min
For some of these parameters, pass/fail limits can be set, as indicated
in the table.
The noise parameters are defined as follows:
•
High Level Std. Dev.
The standard deviations are derived from the dBER/dTh histogram.
The High Level Standard Deviation is calculated as:
Advanced Analysis
5
Agilent J-BERT N4903 High-Performance Serial BERT
211
Noise Results
Summary of Contents for J-BERT N4903
Page 1: ...S Agilent J BERT N4903 High Performance Serial BERT User Guide s Agilent Technologies...
Page 68: ...2 Setting up Patterns 68 Agilent J BERT N4903 High Performance Serial BERT...
Page 158: ...4 Setting up the Error Detector 158 Agilent J BERT N4903 High Performance Serial BERT...
Page 314: ...6 Evaluating Results 314 Agilent J BERT N4903 High Performance Serial BERT...
Page 374: ...7 Jitter Tolerance Tests 374 Agilent J BERT N4903 High Performance Serial BERT...
Page 394: ...8 Solving Problems 394 Agilent J BERT N4903 High Performance Serial BERT...
Page 434: ...Index 434 Agilent J BERT N4903 High Performance Serial BERT...
