Anritsu BERTWave MP2100B, Operation Manual, Page: 264 / 382

Chapter 8 Operating Optical Interface
8-2
8.1 Optical Interface Types
The following optical interface types are available.
●
O/E converter
●
Optical transceiver (SFP+)
O/E Converter
The O/E converter configured by the wide bandwidth photo diode and
amplifier can convert the optical signal to the electrical signal.
The block diagram for the O/E converter included in the Option 023 is as
follows, and the converted electrical signal is connected internally to the
sampling oscilloscope. For details of the low pass filter option numbers,
refer to Table 8.3.1-2.
Figure 8.1-1 O/E Converter Block Diagram
Here, the conversion efficiency means the ratio that the photodiode
converts the optical signal to electrical signal. This efficiency varies
depending on the wavelength. To measure the optical waveform
amplitude correctly, it is necessary to calibrate the conversion efficiency.
CAUTION
The maximum optical power input to the O/E Data In is +2
dBm (1.58 mW). Inputting an optical power exceeding this
level risks damaging the internal circuits. Connect the
optical attenuator to the O/E Data In when measuring the
optical signal exc2 dBm.
+V
Photodiode
Amplifier
O/E
Data In
To Scope
CH B
Low Pass Filter