Anritsu BERTWave Series, Operation Manual, Page: 185 / 466

5.2 PPG/ED Panel
5-19
5
How to Op
erate BERT
Make a signal input connector selection, depending on the settings for ED
Input Condition.
Differential 50 Ohm: Signal input connector for both
Data In
and
Data
In
connectors. The differential voltage of each
signal input to two connectors is the input voltage.
Electrical Single-Ended Data:
Signal input connector for
Data In
connector
Electrical Single-Ended XData:
Signal input connector for
Data
In
connector
Attenuator Factor (External Attenuation)
When installing the fixed attenuator in the Data In and
Data
In
connectors of the BERTWave, input the attenuation (dB) of the fixed
attenuator.
The threshold voltage calculated to the input voltage of the attenuator is
displayed.
The calculation formula is as follows:
Calculated Threshold Voltage = Threshold Voltage × 10^ (attenuation/20)
CAUTION

When inserting the attenuators at both Data In
connector and Data In connector, use the attenuators
with the same amount of attenuation. When the
attenuators with the different amounts of attenuations
are used, the displayed threshold voltage and the actual
threshold voltage are different.

When the voltage input to the attenuator is more than 5
V or less than –5 V, check that the voltage consumed in
the attenuator does not exceed the rated power of the
attenuator.

Check that the voltage of the signal attenuated in the
attenuator does not exceed the voltages displayed at
the Data In connector and Data In connector.