User guide

the roles of the two branches. The delayed signal has now a larger amplitude than
the direct signal. A waveform example is illustrated in the following figure.
0 0 0 0 01 1 1 1 1 1
Output
Amplitude
(Vpp)
De-emphasis
Amplitude
Input
Signal
When pre-cursor de-emphasis is generated this way, the complementary Output
of the De-Emphasis Signal Converter becomes the normal output and vice versa.
C A U T I O N
Be very careful if you set the de-emphasis ratio to amplification! In this case, there
is no indication of the peak-to-peak voltage applied to the DUT.
You need to calculate or measure the output signal voltage precisely. Otherwise
you might damage your device.
The following example illustrates the output of the differential signal with variable
de-emphasis on pre-cursor and 2 post-cursors generated by De-Emphasis Signal
Converter N4916B.
2 Setting up External Instrument(s)
40 Agilent J-BERT N4903B High-Performance Serial BERT
De-emphasis on pre-cursor and 2 post-
cursors