Quantum Data 980 User Manual page 131

980 User Guide Rev. B29
To set the match criteria for either pre-capture filtering or triggering, you check the appropriate box (Data or
Trigger) in the Match tab for each Match definition. Once you check either the Data or Trigger checkbox the Edit
activation button becomes enabled. Clicking on the Edit activation button will open up the Data Island Match
Editor dialog box (shown below). The Data Island Match Editor dialog box is where you define the advance
triggering and pre-capture filtering.
Note: If you are going to set both a custom match trigger and a custom match data you must use different Match
Edit dialog boxes.
6.11.1 Advanced Triggering using Match Definition
You can trigger on a single condition or multiple conditions in the same data island type using one of the Match
definitions (Match 1, 2 or 3). When you trigger on multiple conditions using the same Match definition in a single
type of data island, the two conditions are treated as a logical AND. This means that only when both conditions are
met, will the trigger activate.
You can trigger on multiple conditions in the different data island types using two of the Match definitions (Match 1,
Match 2). When you trigger on multiple conditions in separate Match definitions, the two conditions are treated as a
logical OR. This means that the trigger will activate when either condition is met.
6.11.2 Advanced Pre-Capture Filtering using Data Match Definition
If you are using the Match function at all for advanced triggering, you will have to define the pre-capture filter using
a different Match definition. For example if you are using Match 1 to set the triggering, you should use Match 2 or 3
for pre-capture filtering.
You can either define a pre-capture filter: 1) for a single specific data island type, 2) for all data islands, or 3) for
several types of data islands. If you wish to capture all data islands you use the default setting of ―Custom‖ in the
Match definition. This selection can be found in the Data Island Match Editor on the right side under the heading
labeled, Data Island Type. If you wish to capture only a single type of data island, then you specify that type in the
Match definition.
The example in the figure below shows that the user is defining a trigger condition (or pre-capture filter) based on
the value of the video type of the AVI infoframe. Note that you will have to know the binary values of the data island
field in order to specify the criteria. This may require that you refer to the HDMI specification and CEA-861-D.
Page 131 August 5, 2011