LAB WM309 - Virtual Memories in WaveMaster

Here is a way to make more than 4 memory channels
LeCroy Applications Brief No.LAB WM309

Virtual Memories in WaveMaster
Here is a way to make more than 4 memory channels.
Measuring skew between multiple
waveforms often requires the stor-
age of many waveforms for recall
and measurement. However, most
digital scopes only have two or
four waveform memories for trace
storage. This small number of
memory locations limits the num-
ber of traces recalled into the
scope simultaneously. For applica-
tions where measurements must be
made on more than 4 traces, (such
as skew measurements in memory
chips, or propagation delay in
fanout buffers), a more powerful
solution must be used.

The following example uses the
customization capability in the
WaveMaster to create 8 virtual Figure 1