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ExternalScanClockDriveLine defines which pin is pulsed when a series of conversions across channels start. You can use this property to synchronize the operations of multiple cards over the RTSI bus or via external PFI pins.
Vendor | National Instruments |
Usage | AI |
Access | Read/write |
Data type | String |
Read-only when running | Yes |
PFI0 to PFI15 | Use specified pin from PFI0 through PFI15. |
RTSI0 to RTSI6 | Use specified pin from RTSI0 through RTSI6. |
![]() | ExternalSampleClockSource | ExternalScanClockSource | ![]() |

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