
1.5 Technical
Terms
1-27
1
Outline
The Dual Dirac distribution assumes that RJ is the normal distribution
and DJ is a constant value. The Jitter Analysis software displays
σ
and
µ
R
–µ
L
of the Dual Dirac distribution approximated from the measured
histogram to RJ (d-d) and DJ (d-d) respectively.
Extinction Ratio
The extinction ratio is the ratio of 1 Level and 0 Level; it is used for
evaluating optical signal waveforms.
The extinction ratio is calculated by the following formula.
Extinction Ratio = 10log
10
{(L
1
– L
D
)/(L
0
– L
D
)} (dB)
L
1
: 1 Level (mW)
L
0
: 0 Level (mW)
L
D
: Level without optical input (mW)
L
0
L
1
–
L
D
L
1
L
D
L
0
–
L
D
Figure 1.5-9 Extinction Ratio Measurement Level
For the extinction ratio of PAM4, refer to “Outer ExR (Outer Extinction
Ratio)”.
Eye Amplitude
For NRZ, eye amplitude is the difference between 1 Level and 0 Level.
Refer to Figure 1.5-21.
In PAM4, eye amplitude is the difference between the levels. There are
three of Upper, Middle, Lower. Refer to Figure 1.5-10.
Eye Crossing Percentage
Eye Crossing Percentage is the ratio of the Eye amplitude rising and
falling waveforms. The calculation formula is as follows. Refer to Figure
1.5-21.
Crossing = (crossing point level–0 Level)/(1 Level–0 Level)
Содержание BERTWave Series
Страница 26: ...VI...
Страница 74: ...Chapter 1 Outline 1 48...
Страница 166: ...Chapter 4 Screen Operation 4 24...
Страница 210: ...Chapter 6 How to Operate Sampling Scope 6 16 Figure 6 2 2 4 Switching Graph Display...
Страница 237: ...6 2 Explanation of Windows 6 43 6 How to Operate Sampling Scope Figure 6 2 4 9 Measure Dialog Box Equalizer Tab...
Страница 239: ...6 2 Explanation of Windows 6 45 6 How to Operate Sampling Scope Figure 6 2 4 10 Measure Dialog Box Mask Test Tab...
Страница 246: ...Chapter 6 How to Operate Sampling Scope 6 52 Figure 6 2 6 2 Time Dialog Box CRU Tab When MP2110A 054 is installed...
Страница 309: ...6 9 Measuring Waveform 6 115 6 How to Operate Sampling Scope Figure 6 9 5 1 Marker Display...
Страница 322: ...Chapter 6 How to Operate Sampling Scope 6 128...
Страница 377: ...8 6 Adding an Option License 8 11 8 Maintenance 10 Click System Menu System Information and confirm the added option...
Страница 380: ...Chapter 8 Maintenance 8 14 7 Click Reinstall Windows 8 Click Yes...
Страница 432: ...Appendix A Specifications A 36...
Страница 457: ...D 3 Sampling Oscilloscope D 11 Appendix D 26G 53G CRU MP2110A 055 Table D 3 7 CRU Output Sensitivity Pass Fail...
Страница 458: ...Appendix D Performance Test Record Form D 12...
Страница 466: ...Index Index 6...