S-Parameter Measurement Library Specifications
- Updated2024-11-11
- 6 minute(s) read
S-Parameter Measurement Library Specifications
These specifications apply to your VST when using the S-Parameter Measurement Library.
Definitions
Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty. Warranted specifications account for measurement uncertainties, temperature drift, and aging. Warranted specifications are ensured by design or verified during production and calibration.
Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.
- Typical specifications describe the performance met by a majority of models.
- Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.
- Measured specifications describe the measured performance of a representative model.
Specifications are Measured unless otherwise noted.
Loopback setup describes using a cable to connect the Signal Generator to the Signal Analyzer on a device.
Conditions
Refer to ni.com/docs for detailed specifications on the specific instruments used within the S-parameter measurement system.
Specifications are valid for the system and all included instruments under the following conditions unless otherwise noted:
- System environmental characteristics are met
- Instrument-level conditions are met
- System undergoes 30-minute warm-up period
- Self-calibration is performed after the specified warm-up period is complete
- Self-calibration is performed before system calibration
- System calibration is performed as specified in S-Parameter Measurement Test System Calibration
- S-parameter calibration is performed as specified in S-Parameter Measurement Test System Calibration
- Calibration cycles are maintained
- Hardware temperature is within ±5 °C of the last self-calibration temperature
- The chassis fan mode is set to Auto when used in a chassis with ≥58 W slot-cooling capability or the fan mode is set to High when used in any other chassis
- Empty chassis slots contain slot blockers and EMC filler panels to minimize temperature drift and reduce emissions
- Instruments are connected with appropriate cables as described in Connecting the Hardware for S-Parameter Measurements
S-Parameter Measurement Library Key Parameter
Range
Parameter | Range |
---|---|
Intermediate frequency bandwidth (IFBW) | 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz |
Pulse width | 100 ns to 1 ms |
Averaging per point | 1 to 10 |
Averaging per sweep | 1 to 10 |
Trace Noise and Noise Floor
PXIe-5831 with Two Couplers per Port,
Using PXIe-2597 Switches
- PXIe-5831 at 0 dBm power level with two couplers per port
- IFBW set at 1 kHz as a typical use case
- No averaging
PXIe-5841 with Two Couplers per
Port
- PXIe-5841 at 0 dBm power level with two couplers per port
- IFBW set at 1 kHz as a typical use case
- No averaging
Measurement Errors
PXIe-5831 with Two Couplers per Port,
Using PXIe-2597 Switches
- PXIe-5831 at 0 dBm power level with two couplers per port
- IFBW set at 1 kHz
- No averaging
PXIe-5841 with Two Couplers per
Port
- PXIe-5841 at 0 dBm power level with two couplers per port
- IFBW set at 1 kHz
- No averaging
S-Parameter Drift
PXIe-5831 with Two Couplers per Port,
Using PXIe-2597 Switches
- PXIe-5831 every 15 minutes for 24 hours at 0 dBm power level with two couplers per port
- IFBW set at 1 kHz as a typical use case
- No averaging
PXIe-5841 with Two Couplers per
Port
- PXIe-5841 every 15 minutes for 24 hours at 0 dBm power level with two couplers per port
- IFBW set at 1 kHz as a typical use case
- No averaging
In This Section
Related Information
- S-Parameter Measurement Test System Calibration
You can use S-Parameter Measurement Library API or the calibration wizard in the InstrumentStudio S-parameter measurement panel to perform system-level calibration of your S-parameter measurement test system.
- Connecting the Hardware for S-Parameter Measurements
To perform S-parameter measurements with the S-Parameter Measurement Library, you must configure your hardware as described in the following sections.