Anritsu BERTWave MP2100B, Operation Manual, Page: 110 / 382

Chapter 3 Connecting with DUT
3-14
3.4 Measuring QSFP Module Bit Error Rate
The QSFP module contains four pairs of transmitters and receivers. With
the Option 014, the QSFP Module bit error rate can be measured for four
channels simultaneously.
If using a separate QSFP for transmission in addition to the DUT QSFP,
connect as follows. Use coaxial cables of the same length as for between
Data Out and
Data
Out to connect the BERTWave and QSFP. Bit error
rate cannot be measured correctly if different length coaxial cables are
used.
1. Connect the PPG1-PPG4 Data Out and Input connector on the
transmission QSFP using a coaxial cable.
2. Connect the PPG1-PPG4
Data
Out and Input connector on the
transmission QSFP using a coaxial cable.
3. Connect the DUT QSFP output connector and ED1-ED4 Data In
using a coaxial cable.
4. Connect the DUT QSFP output connector and ED1-ED4
Data
In
using a coaxial cable.
5. Connect the optical output connector of the transmission QSFP to
the input connector of the optical attenuator using an optical fiber.
6. Connect the output connector of the optical attenuator to the optical
coupler.
7. Connect one end of the optical coupler to the input connector of the
DUT QSFP.
8. Connect the other end of the optical coupler to the optical power
meter.
An optical switch can be used in place of the optical coupler.