Teledyne LeCroy USB2-HSIC Decoder - Manual (Page 16)

USB2/USB2-HSIC Decode and Trigger
Applying Measurements with PROTObus MAG
If you have purchased and installed the PROTObus MAG option with your decoder, special measurements
designed for debugging serial data streams can be applied to the decoded waveform. These measurements
appear in a tabular readout below the grid (the same as for any other measurements) and are in addition to
the
result table that shows the decoded data. You can set up as many measurements as your oscilloscope
has parameter locations.
Applying Measurements from the Result Table
PROTObus MAG offers a sub-set of measurements designed for serial data analysis. To quickly apply these
measurements:
1. Touch any data cell of the decode result table.
NOTE: If you're running more than one decoder simultaneously, be sure to select a cell from the correct
table, as the measurement source will be whichever waveform belongs to the table you touch.
2. From the pop-up menu, select Measure to display the Select Operation... dialog.
3. Touch any measurement operation to select it. Options are:
l
View Serial Encoded Data as Analog Waveform - Automatically sets up a Message to Value param-
eter and then tracks the assigned measurement. In doing so, a Digital-to-Analog Conversion (DAC)
of the embedded digital data is performed and the digital data is displayed as an analog waveform.
l
Message to Value - Extract and convert a specific portion of the data/payload in the message and
display it as an analog value.
l
MsgToAnalog (Message to Analog) - Computes the time difference from a protocol message to the
crossing of a threshold on an analog signal.
l
AnalogToMsg (Analog to Message) - Computes the time difference from the crossing of a thresh-
old on an analog signal to a protocol message.
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