NIRFSG_ATTR_FREQUENCY_SETTLING
- Updated2025-02-03
- 1 minute(s) read
NIRFSG_ATTR_FREQUENCY_SETTLING
| Numeric Value | Data type |
Access | Coercion | High Level Functions |
|---|---|---|---|---|
| 1150083 | ViInt32 | R/W | None | None |
Description
Specifies the frequency settling time. Interpretation of this value depends on the NIRFSG_ATTR_FREQUENCY_SETTLING_UNITS attribute.
Valid Values:
The valid values for this attribute depend on the NIRFSG_ATTR_FREQUENCY_SETTLING_UNITS attribute.
| Device | NIRFSG_ATTR_FREQUENCY_SETTLING_UNITS Attribute Value | |||||
|---|---|---|---|---|---|---|
| NIRFSG_VAL_TIME_AFTER_LOCK | NIRFSG_VAL_TIME_AFTER_IO | NIRFSG_VAL_PPM2 | ||||
| PXIe-5644/5645/5646, PXI/PXIe-5650/5651/5652, PXIe-5673/5673E | 2 microseconds1 to 80 milliseconds, resolution of approximately 2 microseconds | 0 microseconds to 80 milliseconds, resolution of 1 microsecond |
1.0, 0.1, 0.01 | |||
| PXIe-5653 | 1.0, 0.1, 0.01, 0.001 | |||||
| PXIe-5654/5654 with PXIe-5696 | Not supported | 0 microseconds to 65,535 microseconds, resolution of 1 microsecond |
1.0, 0.1, 0.01 | |||
| PXIe-5830/5831/5832/5840/5841/5842 | 1 microsecond1 to 10 seconds, resolution of 1 microsecond |
0 microseconds to 10 seconds, resolution of 1 microsecond | 1.0 to 0.01 | |||
| PXIe-5831/5832 with PXIe-5653 (using PXIe-3622 LO)3 | ||||||
| PXIe-5831/5832 with PXIe-5653 (using PXIe-5653 LO)3 | 2 microseconds1 to 80 milliseconds, resolution of approximately 2 microseconds | 0 microseconds to 80 milliseconds, resolution of 1 microsecond | ||||
|
1To ensure that the PLL lock stabilizes when the NIRFSG_ATTR_FREQUENCY_SETTLING_UNITS attribute is set to NIRFSG_VAL_TIME_AFTER_LOCK, NI recommends a time of 128 microseconds, minimum, if the NIRFSG_ATTR_LOOP_BANDWIDTH attribute is set to NIRFSG_VAL_NARROW, and 16 microseconds, minimum, if the NIRFSG_ATTR_LOOP_BANDWIDTH attribute is set to NIRFSG_VAL_WIDE. 2Any specified PPM value that is above the acceptable minimum value is coerced down to the closest valid value. 3The valid values for this configuration depend on the module used as the LO source. Refer to the NIRFSG_ATTR_LO_SOURCE attribute for more information. |
||||||
Default Value: 1.0
Supported Devices: PXIe-5644/5645/5646, PXI/PXIe-5650/5651/5652, PXIe-5653/5654/5654 with PXIe-5696, PXIe-5673/5673E, PXIe-5830/5831/5832/5840/5841/5842
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