Measure/Graph
Measure/Graph
The installation of the Measure/Graph package (included with "ME" and "MP" options) adds a set of measurements
and plots designed for serial data analysis to the oscilloscope's standard measurement capabilities. Measurements
can be quickly applied without having to leave the waveform or tabular views of the decoding.
Note: This capability will only function properly if an "ME" or "MP" option for the protocol decoded is
installed, although the dialogs will appear if any Measure/Graph options are installed.
Serial Data Measurements
These measurements designed for debugging serial data streams can be applied to the decoded waveform.
Measurements appear in a tabular readout below the grid (the same as for any other measurements) and are in
addition to the
that shows the decoded data. You can set up as many measurements as your
oscilloscope has parameter locations.
Note: Measurements appear in the Serial Decode sub-menu of the Measure Setup menu and may have
slightly different names. For example, the CAN sub-menu has measurements for CAN to Value instead of
Message to Value, etc. The measurements are the same.
Measurement
Filters
Description
View Serial Encoded Data as
Analog Waveform
Simplified set up of a Message to Value parameter and graph. Performs a
Digital-to-Analog Conversion (DAC) of the embedded digital data and dis-
plays it as an analog waveform.
Message to Value
ID, Value
Extracts a selected portion of the decoded data to a measurement para-
meter location, with optional conversion of value. Data may be selected
by ID and/or data field position.
Message to Analog
ID, Data, Analog
Computes time from start of first message that meets conditions to
crossing threshold on an analog signal. If the analog condition precedes
the message condition, no measurement is performed.
Message to Message
ID, Data
Computes time from start of first message that meets conditions to start
of the next message that meets conditions.
Time at Message
ID, Data
Computes time from trigger to start of each message that meets con-
ditions.
Analog to Message
ID, Data, Analog
Computes time from crossing threshold on an analog signal to start of
first message that meets conditions. If the message condition precedes
the analog condition, no measurement is performed.
Delta Messages
ID, Data
Computes time difference between two messages on a single decoded
line.
Bus Load
ID, Data
Computes the load of selected messages on the bus (as a percent).
Message Bitrate
ID, Data
Computes the bitrate of selected messages within the decoded stream.
Number of Messages
ID, Data
Computes the total number of messages in the decoding that meet con-
ditions.
23
