Possible trigger signal modes.

Values of this enumeration:

• CiTrigFreeRun
• CiTrigAqCmd
• CiTrigAqCmdStartStop
• CiTrigOneShot
• CiTrigOneShotSelfTriggered
• CiTrigContinuousData
• CiTrigOneShotStartAStopB
• CiTrigOneShotStartAStopA
• CiTrigOneShotStartAStopALevel
• CiTrigContinuousDataQualified