Protocol analysis
R&S
®
RTE
778User Manual 1326.1032.02 ─ 20
Figure 13-79: Example of a crc, parity and block frame conditions
Frames
A frame format description (or frame description, for short) is represented by one
"page" in this dialog. It can be created by clicking on "Add". If one or several frame
descriptions already exist, the new frame description is then created at the end of the
frame format description list (or frame list, for short). Describing a frame format
requires assigning it a name as well as creating Cells and specifying cell descriptions.
The number of frame descriptions is limited to 100. The frame description that is on
display can be deleted from the frame list by clicking "Remove".
The "Frame type" string is intended for the user to label the frame description (typically
according to the specifications of the applicable protocol standard). For example,
MDIO (Management Data Input/Output) specifies the frames "READ", "WRITE",
"ADDRESS".
The example for the DALI protocol in Figure 13-76 has been created with the frame
type "FORWARD-group-address".
The frame format dialog also provides the features "Open", "Save", "Save As...", and
"Explore...", to store created sets of frame descriptions into files (in ".xml" format), or
load existing files of this kind.
The frame identification is executed top down, in the order in which the frame formats
are described in the frame list. This provides a hierarchy of criteria for identifying
frames.
In case it is required to change the order of previously created frame descriptions, it is
recommended to save the set of frame descriptions, and then edit the XML file with
any suitable editor. This also allows ‐ with due care ‐ additional editing features, if
required.
Custom: Manchester / NRZ (option R&S
RTE-K50)M
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