niSync_EnableTimeStampTrigger
- Updated2023-02-21
- 1 minute(s) read
C Function Prototype
ViStatus _VI_FUNC niSync_EnableTimeStampTrigger (ViSession vi, ViConstString terminal, ViInt32 activeEdge);
Purpose
Creates a timestamp every time the signal of the specified trigger or clock changes. You can then read a single timestamp or multiple timestamps at a later point in the data flow.
You cannot use the input terminal specified in this function for other operations until you disable the timestamp trigger using niSync_DisableTimeStampTrigger or close the session with niSync_close. You can create timestamps for triggers, future time events, clocks created using niSync_CreateClock, and external devices.
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Note This attribute is supported only on certain targets. Refer to Target Support for Timing Attributes and Functions to determine whether or not this attribute is supported on your target. |
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession | The session handle that you obtain from niSync_init. The handle identifies a particular instrument session. |
| terminal | ViConstString | Specifies the terminal that contains the trigger signal you would like to timestamp. |
| activeEdge | ViInt32 | Specifies at what point in the trigger signal to record a timestamp in the software buffer. Valid Values: NISYNC_VAL_EDGE_RISING NISYNC_VAL_EDGE_FALLING NISYNC_VAL_EDGE_ANY |