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Chapter 7 Performance Test
7-38
(3) Procedure
Sensitivity Test
1. Connect
the
Clk Out
connector and the
Trigger Clk In
connector
of the sampling oscilloscope using a coaxial cable.
2. Connect the coaxial terminator to the
PPG1
Data
Out
connector.
3. Connect an Open connectors to
ED1 Data In
connector, and
ED1
Data
In
connector respectively.
4. Connect a 20 dB fixed attenuator to
PPG1 Data Out
connector.
5. Connect the 20 dB fixed attenuator and
Ch A In
connector using
a coaxial cable.
6. Click
PPG/ED Ch1. Configure the settings as shown below:
Item
Setting Value
Reference Clock
Internal
Bit Rate
25781250 kbit/s
Clock Output
Ch1/2
PPG Amplitude
0.2
External ATT
0
Test Pattern (PPG)
PRBS 2^31–1, POS
PPG Data/XData
ON
7. Click
Scope. Configure the settings as shown below:
Dialog Box
Item
Setting Value
Setup Signal Type
NRZ
Sampling
Mode
Eye
Number
of
Samples 4050
Accumulation
Time Persistency
Time 10.0
sec
Time - Rate
Tracking
Symbol Rate: PPG,
Divide Ratio: Clock Output
Time - CRU
Operation Mode
Recovery
Operation
Rate
100GbE/4
(25.78125G)
CRU Loop BW
10 MHz
8. Click
Ch A of Scope and measure the amplitude.
9. Adjust PPG Amplitude to make the eye amplitude on Scope 20±1
mV.
10. Connect the 20 dB fixed attenuator and
CRU In
connector using
the coaxial cable. Refer to Figure 7.3.4-1 (b).
11. Click Time CRU of Scope and click the CRU tab.
12. Confirm Lock Status turning to Lock in green.
Summary of Contents for BERTWave Series
Page 26: ...VI...
Page 74: ...Chapter 1 Outline 1 48...
Page 166: ...Chapter 4 Screen Operation 4 24...
Page 210: ...Chapter 6 How to Operate Sampling Scope 6 16 Figure 6 2 2 4 Switching Graph Display...
Page 309: ...6 9 Measuring Waveform 6 115 6 How to Operate Sampling Scope Figure 6 9 5 1 Marker Display...
Page 322: ...Chapter 6 How to Operate Sampling Scope 6 128...
Page 380: ...Chapter 8 Maintenance 8 14 7 Click Reinstall Windows 8 Click Yes...
Page 432: ...Appendix A Specifications A 36...
Page 458: ...Appendix D Performance Test Record Form D 12...
Page 466: ...Index Index 6...