Keysight M8000 Series of BER Test Solutions User Guide 271
Setting up Generator 5
For M8045A, you have two pre–cursor (Coefficient 1 and 2), two post–
cursor (Coefficient 3 and 4), one main-cursor (Coefficient 2) and the
corresponding unit. You can enter the de-emphasis values in terms of
coefficient values. Once you enter the coefficient values, the pre-cursor
and post-cursor values are automatically reflected in the corresponding
fields. Once the Automatic Main-Cursor button is enabled, you are not
allowed to adjust the main cursor as it is automatically calculated.
However, to change the values for main cursor, you need to disable the
Automatic Main-Cursor button. You are allowed to toggle between dB
(decibel) and % (percent). Toggling does not change the value.
Set the values as following:
• Automatic Main-Cursor button: Enables automatic calculation of the
main cursor.
• Coefficient 0: Controls the filter coefficient 0.
• Coefficient 1: Controls the filter coefficient 1.
• Coefficient 2 (Main): Controls the filter coefficient 2 (main cursor).
• Coefficient 3: Controls the filter coefficient 3.
• Coefficient 4: Controls the filter coefficient 4.
• Output Swing: Resulting peak to peak output swing as percentage of
the configured output amplitude.
• Unit: You can toggle between dB (decibel) and % (percent).
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