N7841A Tests Overview

N7841A calibration application versions E.04.02 and greater require a minimum version of firmware to be installed in the FieldFox to successfully run tests and adjustments. Refer to the Firmware Requirements section for more information.
Some FieldFox model and option combinations will require the installation of the CFG Option in order to complete tests. All adjustments will require the CFG Option. Refer to the CFG Option section for more information.

The performance verification and functional tests are designed to provide the highest level of confidence that the instrument being tested conforms to published, factory-set specifications. Specifications and typicals for FieldFox analyzers can be found in the Data Sheet located on the Keysight website. Click on the Document Library tab.

Tests must be performed while the FieldFox internal temperature is within the range specified in the warm-up section. Each test will check the UUT's internal temperature sensors at the beginning and at the end of the test. The values will be included in the report.

If the analyzer is unable to pass any of the tests, then adjustments or repairs may be needed.

Test Types

There are two types of tests: performance and functional.

performance test — Measures the UUT performance against one or more warranted performance specifications. The specifications determine the test limits. Measurement uncertainties are available to comply with international standards for calibration.
functional test — Directly tests hardware functionality that does not have warranted performance specifications. Any numerical results are for informational purposes only. If the functional test includes test limits, they are generally related to typical performance characteristics but may be larger than published typical values. The limits have been set wide enough to account for measurement uncertainty and ensure that the hardware is not defective. Functional test results should not be interpreted as statements of compliance.

The failure of either a performance test or a functional test indicates the need for adjustment or repair.

Tests by Model Number

The tests to be performed are determined by the FieldFox model number. Follow the links below for each model's list of required tests. Refer to the test page for specific model and option requirements. To expand all, click the Expand All button in the toolbar (webhelp only).

The Functional Area column in the tables below indicate if a given test applies exclusively to the NA (network analyzer) function, the SA (spectrum analyzer) function, or to both.

For N9912A , Closed

click here:

For N9923A , Closed

click here:

For all other N991xA models, Closed

click here:

For N991xB models, Closed

click here:

For all other N992xA models, Closed

click here:

For N993xA models, Closed

click here:

For N993xB models, Closed

click here:

For N995xA models, Closed

click here:

For N996xA models, Closed

click here:

Tests for N9912A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F
2.	Frequency Accuracy	NA/SA	P
3.	High Low Power	NA	F
4.	Station Calibration	SA	—	Requires Option 230/231 or 311
5.	Crosstalk S21	NA	F	Requires Option 110 without Option 230/231 or 311 only
6.	Displayed Average Noise Level	SA	P	Requires Option 235
7.	IF Frequency Response	SA	F	Requires Option 230/231
8.	Noise Sidebands	SA	P	Requires Option 230/231
9.	Absolute Amplitude Accuracy	SA	P	Requires Option 230/231 or 311
10.	Absolute Amplitude Accuracy Preamp On	SA	F	Requires Option 230/231 or 311, and Option 235
11.	Frequency Response, Preamp Off	SA	P	Requires Option 230/231 or 311
12.	Frequency Response, Preamp On	SA	F	Requires Option 235

Tests for N9923A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F
2.	Frequency Accuracy	NA	P
3.	High Low Power	NA	F
4.	System Dynamic Range	NA	P
5.	Receiver Compression	NA	F
6.	Dynamic Accuracy	NA	P

Tests for N9913A, N9914A, N9915A, N9916A, N9917A, and N9918A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F
2.	Frequency Accuracy	NA/SA	P
3.	Trace Noise	NA	P	Requires Option 210 or 211
4.	Displayed Average Noise Level	SA	P	Requires Option 233
5.	System Dynamic Range	NA	P	Requires Option 210 or 211
6.	Frequency Readout and Count Accuracy	SA	P	Requires Option 233
7.	Attenuator Slope	SA	F	Requires Option 233 or 310
8.	IF Frequency Response	SA	F	Requires Option 233
9.	Noise Sidebands	SA	P	Requires Option 233
10.	Source Power	NA	F
11.	Receiver Compression	NA	F
12.	Total Abs Amp Accy Low Freq	SA	P	Requires Option 233 or 310
13.	Total Abs Amp Accy Low Freq Preamp On	SA	F	Requires Option 233 and 235
14.	Total Abs Amp Accy High Freq	SA	P	Requires Option 233 or 310
15.	Total Abs Amp Accy High Freq Preamp On	SA	F	Requires Option 233 and 235
16.	Absolute Amplitude Accuracy	SA	P	Requires Option 233 or 310
17.	Dynamic Accuracy	NA	F
18.	DC Bias Source	—	F	Requires Option 309
19.	GPS Function	—	F	Requires Option 307

Tests for N9913B, N9914B, N9915B, N9916B, N9917B, and N9918B
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F
2.	Frequency Accuracy	NA/SA	P
3.	Trace Noise	NA	P	Requires Option 210 or 211
4.	Displayed Average Noise Level	SA	P	Requires Option 233
5.	System Dynamic Range	NA	P	Requires Option 210 or 211
6.	Frequency Readout and Count Accuracy	SA	P	Requires Option 233
7.	Attenuator Slope	SA	P	Requires Option 233 or 310
8.	Attenuator Slope WBIF	SA	F	Requires Options 233, and B04 or B10
9.	Noise Sidebands	SA	P	Requires Option 233
10.	Receiver Compression	NA	F
11.	Total Abs Amp Accy Low Freq	SA	P	Requires Option 233 or 310
12.	Total Abs Amp Accy Low Freq WBIF	SA	F	Requires Options 233 or 310, and B04 or B10
13.	Total Abs Amp Accy Low Freq Preamp On	SA	P	Requires Options 233 and 235
14.	Total Abs Amp Accy Low Freq Preamp On WBIF	SA	F	Requires Options 233 and 235, and B04 or B10
15.	DC Bias Source	—	F	Requires Option 309
16.	IF Frequency Response	SA	F	Requires Option 233
17.	Total Abs Amp Accy	SA	P	Requires Option 233 or 310
18.	Total Abs Amp Accy WBIF	SA	F	Requires Options 233 or 310, and B04 or B10
19.	Total Abs Amp Accy Preamp On	SA	P	Requires Options 233 and 235
20.	Total Abs Amp Accy Preamp On WBIF	SA	F	Requires Options 233 and 235, and B04 or B10
21.	Source Power	NA	F
22.	Absolute Amplitude Accuracy	SA	P	Requires Option 233 or 310
23.	Absolute Amplitude Accuracy WBIF	SA	F	Requires Options 233 or 310, and B04 or B10
24.	Dynamic Accuracy	NA	F
25.	GPS Function	—	F	Requires Option 307

Tests for N9925A, N9926A, N9927A, and N9928A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F
2.	Frequency Accuracy	NA/SA	P
3.	Trace Noise	NA	P
4.	System Dynamic Range	NA	P
5.	Attenuator Slope	SA	F
6.	Source Power	NA	F
7.	Receiver Compression	NA	F
8.	Total Abs Amp Accy Low Freq	SA	P	Requires Option 310
9.	Total Abs Amp Accy High Freq	SA	P	Requires Option 310
10.	Absolute Amplitude Accuracy	SA	P	Requires Option 310
11.	Dynamic Accuracy	NA	F
12.	DC Bias Source	—	F	Requires Option 309
13.	GPS Function	—	F	Requires Option 307

Tests for N9935A, N9936A, N9937A, and N9938A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F	Requires Option 320.
2.	Frequency Accuracy	SA	P
3.	Displayed Average Noise Level	SA	P
4.	Frequency Readout and Count Accuracy	SA	P
5.	IF Frequency Response	SA	F
6.	Noise Sidebands	SA	P
7.	Source Power	SA	F	Requires Option 220
8.	Total Abs Amp Accy Low Freq	SA	P
9.	Total Abs Amp Accy Low Freq Preamp On	SA	F	Requires Option 235
10.	Total Abs Amp Accy High Freq	SA	P
11.	Total Abs Amp Accy High Freq Preamp On	SA	F	Requires Option 235
12.	Absolute Amplitude Accuracy	SA	P
13.	DC Bias Source	—	F	Requires Option 309
14.	GPS Function	—	F	Requires Option 307

Tests for N9933B, N9934B, N9935B, N9936B, N9937B, and N9938B
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F	For N9938B, test will only appear on DUTs with Option 100 (3.5 mm connectors).
2.	Frequency Accuracy	SA	P
3.	Displayed Average Noise Level	SA	P
4.	Frequency Readout and Count Accuracy	SA	P
5.	Noise Sidebands	SA	P
6.	Total Abs Amp Accy Low Freq	SA	P
7.	Total Abs Amp Accy Low Freq WBIF	SA	F	Requires Option B04 or B10
8.	Total Abs Amp Accy Low Freq Preamp On	SA	P	Requires Option 235
9.	Total Abs Amp Accy Low Freq Preamp On WBIF	SA	F	Requires Options 235, and B04 or B10
10.	DC Bias Source	—	F	Requires Option 309
11.	IF Frequency Response	SA	F
12.	Total Abs Amp Accy	SA	P
13.	Total Abs Amp Accy WBIF	SA	F	Requires Option B04 or B10
14.	Total Abs Amp Accy Preamp On	SA	P	Requires Option 235
15.	Total Abs Amp Accy Preamp On WBIF	SA	F	Requires Options 235, and B04 or B10
16.	Source Power	SA	F	Requires Option 220
17.	Absolute Amplitude Accuracy	SA	P
18.	Absolute Amplitude Accuracy WBIF	SA	F	Requires Option B04 or B10
19.	GPS Function	—	F	Requires Option 307

Tests for N9950A, N9951A, and N9952A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F
2.	Frequency Accuracy	NA/SA	P
3.	Trace Noise	NA	P	Requires Option 210 or 211
4.	Displayed Average Noise Level	SA	P	Requires Option 233
5.	System Dynamic Range	NA	P	Requires Option 210 or 211
6.	Frequency Readout and Count Accuracy	SA	P	Requires Option 233
7.	Attenuator Slope	SA	F	Requires Option 233 or 310
8.	Noise Sidebands	SA	P	Requires Option 233
9.	Receiver Compression	NA	F
10.	Total Abs Amp Accy Low Freq	SA	P	Requires Option 233 or 310
11.	Total Abs Amp Accy Low Freq Preamp On	SA	P	Requires Option 233 and 235
12.	DC Bias Source	—	F	Requires Option 309
13.	IF Frequency Response	SA	F	Requires Option 233
14.	Total Abs Amp Accy High Freq	SA	P	Requires Option 233 or 310
15.	Total Abs Amp Accy High Freq Preamp On	SA	P	Requires Option 233 and 235
16.	Source Power	NA	F
17.	Absolute Amplitude Accuracy	SA	P	Requires Option 233 or 310
18.	Dynamic Accuracy	NA	F
19.	GPS Function	—	F	Requires Option 307

Tests for N9960A, N9961A, and N9962A
Test Name		Functional Area1	Test Type2	Comments
1.	CalReady Refresh	NA	F	Requires Option 320
2.	Frequency Accuracy	SA	P
3.	Displayed Average Noise Level	SA	P
4.	Frequency Readout and Count Accuracy	SA	P
5.	Attenuator Slope	SA	F	Requires Option 233
6.	Noise Sidebands	SA	P
7.	Total Abs Amp Accy Low Freq	SA	P
8.	Total Abs Amp Accy Low Freq Preamp On	SA	P	Requires Option 235
9.	DC Bias Source	—	F	Requires Option 309
10.	IF Frequency Response	SA	F
11.	Total Abs Amp Accy High Freq	SA	P
12.	Total Abs Amp Accy High Freq Preamp On	SA	P	Requires Option 235
13.	Source Power	SA	F	Requires Option 220
14.	Absolute Amplitude Accuracy	SA	P
15.	GPS Function	—	F	Requires Option 307