DAP Technology 1394, Руководство по эксплуатации

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Recorder
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right of it.
For some parameters, the value can be entered by selecting a symbolic value from a list of symbolic
values in a combo box.
· Fields. The formatted payload or field can be shown as a table or a layout picture. The Fields tab shows
the table. Here you can enter the data-field conditions just as you could do with the header fields. The
table has the following columns:
· Field. The Field column displays the data field name.
·
Cond. Here a compare type can be selected. You define a compare type by clicking in this field and
select the type from the combo box. You can select the following types:
· == condition met if the packet-field value equals the specified Value.
·
!= condition met if the packet-field value does not equal the specified Value.
· <= condition met if the packet-field value is less than or equal to the specified Value.
· >= condition met if the packet-field value is greater than or equal to the specified Value.
You can also select an 'empty' operation, meaning that the field condition has to be removed.
Selecting this will also remove the field Value.
Note that for each byte in the packet, only one condition may exist, unless the condition is '=='. The
software will inform you about possible conflicts as soon as you try to Apply the settings.
·
Value. Here you can specify the value for the condition. Note that the values are dispayed in a form
depending on the field type. For instance the 'transfer length' field in the example below is
displayed as a decimal number. The 'logical block address' field is displayed as hexadecimal
number and the 'operation code' field is shown using symbolic values.