Anritsu BERTWave Series, Руководство по эксплуатации, Страница: 171 / 466

5.2 PPG/ED Panel
5-5
5
How to Op
erate BERT
The following table describes the panel.
Table 5.2-1 Setting Items of PPG/ED
Item Description
Setup/Result Switches the PPG/ED panel display.
PPG Data/XData Sets the PPG data signal output On/Off.
XData means
Data
on the front panel.
The right side of the button is lit in green while the data is outputting to
the connector.
Bit Rate*
1
When Reference CLK is Internal:
Select the communication standards by clicking the button.
Set the bit rate when Variable is selected.
Set the offset in the range from –100 to 100 ppm for the set bit rate.
When Reference CLK is Ext Clk In:
Input the external clock and check that the indicator of the Reference
CLK status display is changed to yellow, then click Apply.
When the internal pattern generation circuit is synchronized with
the external clock, the external clock frequency and bit rate are
displayed.
Reference CLK Status
Display
Displays the reference clock synchronization status.
Red:
Reference clock cannot be detected.
Yellow: Reference clock was detected, but is not synchronized
with pattern data.
Green: Reference clock is synchronized with pattern data.
PPG Amplitude Sets the amplitude voltage of the signal output to the
Data Out
connector and
Data
Out
connector at the text box on the right.
When the attenuators are connected to the
Data Out
connector and
Data
Out
connector, set the attenuation at Ext ATT. The amplitude voltage of
the signal output from the attenuator is displayed.
Note:
Connect the attenuators that are the same attenuation to the
Data
Out
connector and
Data
Out
connector.
ED Input Condition Selects the input method of ED by clicking the button.
Set the threshold voltage of the
Data In
connector and
Data
In
connector
at the text box on the right.
When the attenuators are connected to the
Data In
connector and
Data
In connector, set the attenuation at Ext ATT.
Note:
Connect the attenuators that are the same attenuation to the
Data
In connector and
Data
In connector.
*1: This is set to the following channels as common:
In MP2110A-012: Ch 1 and Ch 2
In MP2110A-014: Ch 1 to Ch 4