Analyzing waveforms
20.
To avoid having to rearrange the cables
after the Learn operation, you may split
the output of the signal generator, putting
one branch into the Error Detector and
one branch into the DUT. Here the
Learn Operation is done on Ch1, but
the actual error detection occurs on
Ch2. You can adjust the amplitude of
the signal generator to account for the
loss due to splitting the signal. This
works because the Error Detector learn
operation stores the signal test pattern
into non-channel-speci
fi
c memory.
21.
When the Error Detector is driven from
the user interface, bus triggers are used
whenever possible, so that bus decoding
is automatically enabled. The Decoding
indicates the location of the error in
the signal by highlighting the decoded
value in red, as shown in the screen
shot below. You can use additional
oscilloscope channels to simultaneously
probe other signals to debug the cause
of the error.
140
MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series User Manual
