Signal Path:IF Filter Bandwidth
- Updated2025-10-14
- 2 minute(s) read
Specifies the IF filter path bandwidth, in Hz, for your device configuration.
NI-RFSA uses this property in conjunction with the Device Instantaneous Bandwidth property and the Digital IF Equalization Enabled property to determine the settings for your measurement. NI-RFSA selects the next highest available filter based on the value you specify. The following table lists the IF filters available for NI devices. You may specify a higher value than your device instantaneous bandwidth if your measurement requires it, but specifying a lower value returns an error.
| Device | IF Filter Bandwidth Range | IF Filter |
|---|---|---|
| PXIe-5603/5665 (3.6 GHz) | ≤300 kHz | 300 kHz IF filter |
| >300 kHz and ≤5 MHz | Through IF filter | |
| >5 MHz | Through IF filter | |
| PXIe-5605/5665 (14 GHz) | ≤300 kHz | 300 kHz IF filter |
| >300 kHz and ≤5 MHz | 5 MHz IF filter | |
| >5 MHz | Through IF filter | |
| PXIe-5668 | ≤300 kHz | 300 kHz IF filter |
| >300 kHz and ≤5 MHz | 5 MHz IF filter | |
| >5 MHz and ≤100 MHz | 100 MHz IF filter | |
| >100 MHz and ≤320 MHz | 320 MHz IF filter | |
| >320 MHz | 765 MHz IF filter |
Valid Values:
PXIe-5603/5605: 0 to 80 MHz
PXIe-5665/5667: 0 to 50 MHz
PXIe-5668: 0 to 765 MHz
PXIe-5694: 0 to 50 MHz
Default Values: For spectrum acquisition mode the default value is greater than or equal to the Span property. NI-RFSA chooses the default value of the IF Filter Bandwidth property to correspond to the appropriate IF filter. For I/Q acquisition type NI-RFSA chooses the default value corresponding to the widest IF filter possible for your equipment setup.
Supported Devices: PXIe-5603/5605/5606, PXIe-5665/5667/5668, PXIe-5694
Remarks
The following table lists the characteristics of this property.
| Short Name | IF Filter BW |
| Data type |  |
| Permissions | Read/Write |
| High-level VIs | N/A |
| Channel-based | No |
| Resettable | Yes |