Sample Timing Type
| Data Type: | int32 |
| Description: | Specifies the type of sample timing to use for the task. Select DAQmx_Val_SampClk when a hardware signal (usually a clock) must acquire or produce samples. To perform buffered edge counting, for example, select DAQmx_Val_SampClk and use Source to specify the source of the Sample Clock. Select DAQmx_Val_Handshake when you want to use bidirectional hardware signals to time the exchange of digital data between two devices. Select DAQmx_Val_OnDemand when you want to acquire data only when an NI-DAQmx Read function executes or to generate data only when an NI-DAQmx Write function executes. Select DAQmx_Val_Implicit when you perform a buffered period or frequency counter measurement or when you generate a finite pulse train. |
Valid values
| DAQmx_Val_SampClk | 10388 | Use a sample clock to determine how often to acquire or generate samples. |
| DAQmx_Val_BurstHandshake | 12548 | Determine sample timing using burst handshaking between the device and a peripheral device. |
| DAQmx_Val_Handshake | 10389 | Determine sample timing by using digital handshaking between the device and a peripheral device. |
| DAQmx_Val_Implicit | 10451 | Configure only the duration of the task. |
| DAQmx_Val_OnDemand | 10390 | Acquire or generate a sample on each read or write operation. |
| DAQmx_Val_ChangeDetection | 12504 | Acquire samples when a change occurs in the state of one or more digital input lines. The lines must be contained within a digital input channel. |
| DAQmx_Val_PipelinedSampClk | 14668 | Device acquires or generates samples on each sample clock edge, but does not respond to certain triggers until a few sample clock edges later. Pipelining allows higher data transfer rates at the cost of increased trigger response latency. Refer to the device documentation for information about which triggers pipelining affects. This timing type allows handshaking with some devices using the Pause trigger, the Ready for Transfer event, or the Data Active event. Refer to the device documentation for more information. |
You can get/set/reset this property using:
DAQmxGetSampTimingType
DAQmxSetSampTimingType
DAQmxResetSampTimingType