Anritsu BERTWave MP2100B, Руководство по эксплуатации, Страница: 290 / 382

Chapter 9 Performance Test
9-14
9.2.3 Rx sensitivity
(1) Specification
20 mVp-p
BER 10
–12
or less under the following conditions:
 Pattern: PRBS31
 Mark ratio: 50%
 Single-end
 Back-to-back connection
Without the Option 092: 11.32 Gbit/s
With the Option 092:
12.5 Gbit/s
(2) Setup
Same as Figure 9.2.2-1 and Figure 9.2.2-2.
(3) Procedure
1. Attach a 20 dB fixed attenuator to the PPG1 Data Out connector.
(Refer to (a) in Figure 9.2.2-1.)
2. Connect coaxial terminators to the PPG1 Data Out and ED1
Data
In connectors.
3
.
Connect the Sync Out and Trigger Clk In connectors using a
coaxial cable.
4. Connect the PPG1 Data Out and Ch A In connectors using a
coaxial cable.
5. Touch [PPG], and then set the value as follows:
Amplitude: 200 mV
Bit Rate: Variable, 11320000 kbit/s (Without the Option 092)
Variable, 12500000 kbit/s (With the Option 092)
Data/XData Out: On
Error Addition: Off
Reference Clock: Internal
Offset: 0 ppm
Test Pattern: PRBS 2^31–1, Pos
6. In the Eye/Pulse Scope window, touch [CH A] to measure the
amplitude.
7. Adjust the PPG1 Amplitude so that the Eye/Pulse Scope
amplitude is 20±1 mV.
8. Touch [ED], and set the value as follows.
Data Input condition: Single-Ended Data
Gating Cycle:
Single
Gating Time: 10 s
Test Pattern: PRBS 2^31–1, Pos
Threshold: 0 mV