DAP Technology 1394, Operation Manual

Page: 203 / 458

Filter/Trigger
203 Copyright © DapTechnology B.V., 2005-2019 - All Rights Reserved., 5/20/2019
Chapter 12. Filter/Trigger
This section describes the Filter / Trigger functionality. Please take note that not all features described are
available on all analyzer models.
With the Recorder Filter one can skip packets or events. Skipped packet or events are not stored in
memory by the Recorder. The packets to be skipped can be selected by type, speed, error type or by
using any boolean combination of the four packet Sets.
The Recorder can be triggered using extensive hardware trigger logic. You can select simple trigger
conditions such as trigger on a particular type of error packet, trigger when a packet fits the description of
a packet Set or any boolean combination of the four packet Sets, or trigger on external port inputs. For
more advance triggering a powerful trigger sequencer can be used.
You also can select the amount of data to be recorded maximal after a trigger. And you can select to use
a cyclic buffer for the data before the trigger. The size of this cyclic buffer can be changed too.
Both Filter and Trigger logic can use any boolean combination of four packet Sets. These Sets consist of
any combination of primary (asynchronous or stream) packets or a phy packet, with optional value
checking on packet fields. Value checking can be performed on header fields or data fields. In case of
data fields, a powerful packet editor is included to be able to put conditions on data fields of a large
variety of packets
12.1. How to use it
You can open the Filter/Trigger Settings window by selecting the Filter/Trigger Settings command from
the Analyzer menu at the top of one of the open Analyzer windows.
When you open the Filter/Trigger Settings, the window below will appear.