Ieee 1394 (1394) transactions – Teledyne LeCroy FireInspector - Users Manual User Manual
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• Double-click on the protocol name in the transaction number field to expand or collapse
the row.
• Left-click* on the protocol name to access the cell context menu. The menu provides
commands to expand or collapse the row, to expand all rows of the same protocol, and
to collapse all rows of the same protocol. Select a command to perform the desired oper-
ation.
*If the option Right click cell context menu is checked on the General tab of the Display Options dialog,
then the cell context menu is opened by right-clicking. See Section 5.1.1, “General Display Options” on
page 42 for more information.
IEEE 1394 (1394) Transactions
1394 transactions consist of a request and a response. An action needs to obtain at least an
acknowledgment (ACK) response from the destination in order to qualify as a 1394
transaction. FireInspector matches up the two (request and response) and displays them
together in the Trace.
1394 transactions are always displayed when any other decoding level (except CIP) is
activated.
There are three 1394 transaction types: Read, Write, and Lock. The transaction row
displayed in the Trace for any of these types will contain these fields:
Figure 5-13: Collapsed transaction row — lower-level transactions and packets are hidden
Figure 5-14: Expanded transaction rows — lower-level transactions and packets are visible
Table 5-2: Fields in 1394 transaction rows
Field Heading
Description
Write, Read, or Lock
The transaction type.
split or unified
Indicates whether the transaction is split or unified. This field is found
in the bottom half of the cell that contains the transaction type.
Requester
The ID of the node that initiated the transaction.