Configures the Reference trigger for multi-sample pattern match triggering.
You can configure up to 32 channels with patterns of up to 10 samples per channel with this node. For the channels specified in the channel list parameter, the pattern must match each pattern element specified in the pattern array parameter on consecutive clock cycles. After the last pattern element in the pattern array parameter is matched, the Reference trigger is asserted.
This node is valid only for acquisition sessions.
The channels that are configured for pattern matching using the pattern array value.
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Default: No error
The binary multi-sample pattern that activates the pattern match trigger. The first element in the array corresponds to the first pattern acquired.
Bits on channels not specified in channel list are ignored.
The following example searches for ten consecutive samples on channel 0:
Sample 0 | 0x0 |
Sample 1 | 0x1 |
Sample ... | ... |
Sample 8 | 0x0 |
Sample 9 | 0x1 |
The following example searches for ten consecutive samples on channels 0 to 19:
Sample 0 | 0xABCDE |
Sample 1 | 0xFFFFF |
Sample ... | ... |
Sample 8 | 0xFFFFF |
Sample 9 | 0xABCDE |
The number of pretrigger samples the device must receive before the Reference trigger is acknowledged.
Default: 500
Error information.
The node produces this output according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported
Web Server: Not supported in VIs that run in a web application