DAP Technology 1394, Руководство по эксплуатации

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Filter/Trigger
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greater than or equal to 1024. Note that some values can be selected by selecting a symbolic value from
a combo box, so you do not have to look up these values. If you want to know the values of these
symbolic names, you can look inside the 'Layout' tab, or you can use a right-mouse click and select the
'Decimal' values option for instance.
For some formats, there may be a data field for which you can define a separate sub-format in an
additional tab. Here you can also add additional conditions for the fields in that sub-format. In the
CommandOrb format example above for instance, the 'command' field can be sub-formatted in a
additional tab. In the example below this additional 'command' tab has been selected. The 12 bytes
command is shown here. Now you can select a separate format for this 12 bytes command. In the
example we chose the 'Simplified direct-access' command set, which is part of the SCSI specifications.
This format can show all SCSI commands that are part of that set. When you select an other operation
code, the format will adapt to the format for that particular command. This way it is very easy to add
additional conditions on fields that are specific for a command set and specific to a command from that
set. In the example below for instance additional conditions are added so that only a READ(10) command
that has also a 'transfer length' field value of 1024 or more does fit the set.
Depending on the license keys that are installed, you can select all kind of formats and optionally
sub-formats where needed. There are formats for the SBP protocol, IIDC protocol, IP4 protocol and AV/C
protocol. You also can select the format 'unformatted' to be able to set any kind of condition on any bits.
Now we will describe the different parts of the Data Values box:
payload size (bytes):
Here you can enter the payload size of the packet, expressed in number of bytes. It will specify the size of
the data shown in the 'Payload' tab. Changing the value will also change the size (bytes) value in the
'Payload; tab. This value will automatically adapted if you specify a new value for the 'Data Length Async.
packet' field in the Header Values box.
Format tabs
The 'Payload' tab will always be present. It describes the whole payload. If a field can be described with a
sub-format, an additional tab will be present for the format of that field. See 'command' tab in example
above. All tabs have the same parts in it:
· format: With this combo box you can select the format of the packet or sub-format of the field. Note that
the formats you can select from depend on the license keys that are installed for the currently
connected Analyzer. If no Analyzer is connected, there will only be the unformatted option.
·
size (bytes): Here the number of bytes will be displayed that correspond to the data in the selected tab.
For the 'Payload' tab this will be the size of the complete payload as indicated in the payload size
(bytes): above it.
· parameter: Sometimes a format may need extra parameters to be able to format the data correctly. In