Agilent Technologies 622Vu Advisor, Руководство пользователя

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622Vu Advisor color-codes any reserved positions in the payload area, matching
the color used with the corresponding framing specifications to the right (End of
Datagram in the example above). See AAL1 Framing (page 166) and AAL5
Framing (page 167) for details about these framing specifications.
You can fill in any data you want in the unreserved payload positions. There are
two ways to do this:
•
Use the 48 text boxes to specify the data, entering each byte in hexadecimal
format. When you close the cell definition, 622Vu Advisor fills all the
remaining positions with spaces. If you don’t specify any cell positions
explicitly, 622Vu Advisor zero-fills the entire payload when you close the
cell.
•
Use the area below the text boxes to type in ASCII data. This option isn’t
available if unprintable characters are already defined in the payload (in
reserved positions). In this case, the ASCII box is grayed, and unprintable
characters display in that box as dots (.).
Raw Framing
If you select raw cell framing, 622Vu Advisor lets you specify any cell data you
want, in any position. Raw cell framing is particularly useful for non-standard
transmissions, as for a device that uses a proprietary signalling code.
AAL1 Framing
If you select AAL1 cell framing, 622Vu Advisor provides a mini-wizard to assist
you in generating a correctly formatted cell (i.e., a cell with SAR information in
the first payload position):
9: Editing Transmit Sequences
9.4 Defining the Cells In a Sequence
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