Trigger:Trigger Source
- Updated2025-04-18
- 1 minute(s) read
Specifies the trigger source. When niDMM Initiate is called, the DMM waits for the trigger specified with this property. After it receives the trigger, the DMM waits the length of time specified with the Trigger Delay property. The DMM then takes a measurement.
To determine which values are supported by each device, refer to the LabVIEW Trigger Routing section in the NI Digital Multimeters Help.
Remarks
The following table lists the characteristics of this property.
| Short Name | Trigger Source |
| Data type |  |
| Permissions | Read/Write |
| High-level VIs | niDMM Configure Trigger |
| Resettable | No |
| Immediate | 1 | No trigger specified. |
| External | 2 | Pin 9 on the AUX Connector |
| Software Trig | 3 | Waits until niDMM Send Software Trigger is called. |
| TTL 0 | 111 | PXI Trigger Line 0 |
| TTL 1 | 112 | PXI Trigger Line 1 |
| TTL 2 | 113 | PXI Trigger Line 2 |
| TTL 3 | 114 | PXI Trigger Line 3 |
| TTL 4 | 115 | PXI Trigger Line 4 |
| TTL 5 | 116 | PXI Trigger Line 5 |
| TTL 6 | 117 | PXI Trigger Line 6 |
| TTL 7 | 118 | PXI Trigger Line 7 |
| PXI Star | 131 | PXI Star Trigger Line |
| LBR Trig 1 | 1004 | Local Bus Right Trigger Line 1 of PXI/SCXI combination chassis |
| AUX_Trig 1 | 1001 | Pin 3 on the AUX connector |