In NF (Noise Figure) mode there are four types of measurements: Noise Figure, Noise Factor, Gain, Noise Temperature, and Y-Factor.
Here is the an example procedure for setting up a noise figure measurement using SCPI commands:
1. Set up the noise source and ENR table, using: CORR:ENR:MOD and set to SMARt (default), TABLe, or SPOT
2. And then
- For SPOT commands in the Noise Source / ENR table below (*.enr)
4. Set the noise bandwidth, using the NBANDwidth command
5. Set the number of points, using SWE:POIN
6. Enter a DUT setup type, using the DUT commands table
7. Set the frequency range, using Frequency commands table
8. Setup Integration, using the Integration commands table
9. Set the uncertainty contributions, using Uncertainty commands table
10. If you haven't run a receiver calibration, then perform a Receiver Cal, using the Calibration commands table
11. Run a user calibration, using Calibration commands table
12. Set the type of noise figure measurement (Noise Figure (NFIG), Noise Factor (NFAC), Gain (GAIN), Noise Temperature (NTEM), or Y-Factor (YFAC)), using the CALCulate:PARameter:DEFine
For more information on the calibration and DUT measurement setup user interface, refer to the User's Guide (N9927-90020 or to the N9938-90006).
In this topic:
See Also
- Commands that are Common to All Modes
Description |
Command |
Set and query the frequency (X-axis) annotation method. |
|
Center freq |
|
Frequency context |
|
Read X-axis values |
|
IF (DUT Out) start frequency |
|
LO |
|
RF (DUT In) Start Frequency |
|
Freq span |
|
Start |
|
Stop |
After DUT loss (double) |
|
Before DUT loss (double) |
|
After loss enabled (bool) |
|
Before loss enabled (bool) |
|
Before DUT temp (double) |
|
After DUT temp (double) |
|
Set DUT type |
|
Set Sideband |
Sweep points |
Scaling - auto |
DISPlay:WINDow:TRACe<n>:Y[:SCALe]:AUTO |
Scaling - Set bottom of scale |
DISPlay:WINDow:TRACe<n>:Y[:SCALe]:BOTTom |
Scaling - Set per division |
DISPlay:WINDow:TRACe<n>:Y[:SCALe]:PDIVision |
Scaling - Set reference level |
DISPlay:WINDow:TRACe<n>:Y[:SCALe]:RLEVel |
Scaling - Set reference position |
DISPlay:WINDow:TRACe<n>:Y[:SCALe]:RPOSition |
Scaling - Set top of scale |
Create measurement |
|
| Set and read number of traces | |
Select Measurement |
CALCulate:PARameter:SELect |
Multi-trace Configurations |
|
View Memory trace |
|
| View Data trace | DISPlay:WINDow:TRACe<n>:STATe |
Stores current trace points |
Jitter goal |
|
Maximum time per point |
|
Mode |
|
Time per point |
|
Jitter warning |
|
Jitter goal exceeded warning (query) |
|
Jitter goal exceeded memory warning (query) |
Sets the smart noise source to autoload ENR data |
[:SENSe]:CORRection:ENR:AUTOload[:STATe] |
ENR Extrapolation state (query only) |
|
Spot ENR uncertainty coverage |
|
Spot ENR gamma distribution |
|
ENR mode (see also CORR:ENR:AUTO) |
|
Enables autoconnect to a smart source |
|
Enables/disables the smart source |
|
Spot ENR off gamma |
|
Spot ENR on gamma |
|
Spot ENR gamma specify style |
|
Spot ENR value |
|
Spot ENR uncertainty |
|
T Cold |
|
Recall ENR data |
|
Save ENR data |
Spot DUT distribution |
|
Spot DUT in gamma |
|
DUT mode |
|
Spot DUT out gamma |
|
Spot DUT specify style |
|
Import DUT match data |
|
Recall DUT data |
|
Save DUT data |
| Spot preamp distribution | |
Spot preamp in gamma |
|
Preamp mode |
|
Spot preamp out gamma |
|
Spot preamp specify style |
|
Import preamplifier match data |
|
Recall preamplifier data |
|
Save preamplifier data |
Error bars (Enable/Disable) |
|
Apply calibration uncertainty |
|
Uncertainty coverage |
|
Apply noise source uncertainty |
|
Apply jitter uncertainty |
|
Apply mismatch uncertainty |
|
Uncertainty questionable state (query only) |
Manual resolution bandwidth value |
Align now |
|
InstAlign state |
Limit line beep |
|
Create limit lines |
|
Limit line testing state |
|
Limit line testing annotation |
|
Display Line level setting |
|
Display Line state |
|
Read Pass / Fail |
|
Build Limit from Trace |
None |
Select a marker |
|
Markers - all off |
|
Marker search - Max |
|
Marker search - Min |
|
Marker search - Peak excursion |
|
Marker search - Peak left |
|
Marker search - Peak Next |
|
Marker search - Peak right |
|
Marker search - Peak threshold |
|
Marker -> Setting |
|
Move marker to center freq |
|
Move marker to ref level |
|
Marker On/Off |
|
Move marker to other trace |
|
Move/read marker X-axis position |
|
Read marker Y-axis position |
|
Read marker Y-axis uncertainty position |
|
Markers - coupled |
|
Marker search - Target |
|
Tracking On/Off |
Receiver calibration (Cancel) |
|
Receiver calibration (Run) |
|
Receiver calibration state (query only) |
|
User calibration (Cancel) |
|
Users calibration interpolated state (query only) |
|
User calibration (Run) |
|
User calibration state (Enable/Disable) |
Set read format |
|
Saves trace to CSV file. |
|
Read Trace Data |
|
Trace Data (Query the trace memory data) |
|
Read the uncertainty memory trace data |
TRACe<n>:MEMory:UNCertainty:DATA? |
Read the uncertainty lower memory trace data |
|
| Read the uncertainty upper memory trace data | |
Trace Data (Query trace data) |
|
Trace Data (Query trace data lower values) |
|
Trace Data (Query trace data upper values) |
Last Modified:
01june2018 |
Added NF mode Opt. 356 (10.3) |