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DAQFactory User's Guide

Navigation: 6 Channels and Conversions

6.7 The Channel View

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The channel view provides another way to enter or edit your channel information.  The channel view also gives you access to additional parameters not available in the channel table.

To get to the channel view for a channel, simply click on the channel's name displayed in the workspace.  You may have to expand the CHANNELS: list by clicking on the + sign to its left to see your channels listed.  

The channel view only displays one channel at a time so can be slow to add a lot of channels.  The channel view has some nice extras though.  In addition to all the information that can be entered for a channel in the table:

· You can enter more detailed notes about the channel.

· You can quickly view your data in a table.  This shows you the exact data coming in and is also helpful for determining if you have entered the correct channel information.

· You can create an event.  The event is sequence script that executes every time the channel gets a new data point.  The event is called after the data in the channel is updated, so you can retrieve the latest data by simply referencing the channel.  For high speed streaming data, the event is only triggered for each block of data.   For performance reasons it is best to keep these events short and quick.  If you need to do something that takes some time, consider starting a sequence from within the event using the sequence.mySequence.begin() function.

To create new channels without using the channel table, you can right click on any of the channels listed in the workspace and select Add Channel.  You can also delete channels by right clicking on the channel name in the workspace and selecting Delete Channel.  If individual channel names are not shown in the workspace, you must click on the plus sign next to the CHANNELS: label.  If there is no plus sign then there are no channels.  If this is a remote connection and you think there should be channels listed, you can try resetting the connection to force another download of channel information.  To do this, click on the connection name to display the connection view and press the Reset Connection button.