N7851A Test Equipment

This section lists the test equipment needed to run performance tests. Refer to each individual test for specific setup configurations with required cables and adapters. Not all of the listed test equipment needs to be connected to perform an individual test. To run a test, only the equipment specified for that test needs to be connected.

Test Equipment for Performance Tests

Table Footnotes

Guidelines for Ordering Power Sensor Calibration Service

Use the following guidelines to ensure power sensors used by the N7800A application receive the correct calibration service:

1. Order Option 1A7 when ordering new power sensors that will be used as working standards in N7800A TME calibrations.

2. Order the Keysight Cal + Measurement Uncertainty + GB calibration service for power sensor recalibration.

3. When ordering periodic calibration for instruments used as lab standards in the N7800A software, we recommend using “Keysight calibration + uncertainties” for power sensors, and “Keysight calibration + uncertainties + guardbanding” for all other items (please visit Selecting the Right Calibration Services). The N7800A software incorporates the GUM = The Guide to the Expression of Uncertainty in MeasurementISO GUM Uncertainty in point-to-point uncertainty calculations. The special “H-series” calibration options in this table provide lower measurement uncertainties through use of direct comparison to devices directly characterized by NPL = National Physical LibraryNPL or NIST = National Institute of Standards and TechnologyNIST (or another NMI = National Measurement InstituteNMI). Please order Option H99 to get electronic data for easy import into the N7800A (avoids manual entry). The overall resulting N7800A measurement uncertainties then reflects these lower device uncertainties. The equipment requirements of each N7800A calibration application are summarized in the specials calibration matrix which can be found at the Recommended Lab Standards and Special Cal Options website.

4. The Keysight Option H99 is a special option for the Roseville Service Center [only] which provides electronic calibration data available as a .csv file in TME N7800A format for all power sensors used with the N7800A TME application. N7800A TME is SSU calibration software used across Keysight SSU and by many self-maintainers. H99 must be requested from the Roseville SSU upon re-calibration only of any previously purchased power sensor and not for new purchases of BID Power Sensors. This option may be ordered in addition to any other required or requested Std Lab Calibration option (must also be ordered in addition to H99). Option H99 is recommended but not required.

   The following models are not supported by Option H99: E9304A-H18, H19, H84 E9300A-H25 N8386A N8486AQ

Calibration Data Validation

Standard Checks

To ensure data integrity for measurements carried out with Test Management Environment (TME), the following verification checks are carried out at the beginning of each test run. The checks are only performed on devices that require calibration data which directly affect the test results. If you are unable to meet the calibration requirements for these devices contributing to the measurement uncertainty only, you may still produce valid reports using the standard report format option which does not contain any measurement uncertainty information.

The following table lists the standard checks performed by default:

1) TME expects the power sensor calibration factor uncertainty to be absolute uncertainty.

2)  The calibration data needed for power splitter is the Port 2 data. In the Calibration Factor test, the physical port of the power splitter with the Port 2 calibration data should be the test port which will be connected to Standard Power Sensor, Verification Power Sensor, or UUT.

Required Calibration Data

When running a test that required the calibration data, the test will check if all the required calibration data exists.  If it is not, an error message will be prompted to ask you to enter the data.

Table 1 lists the UUT factory predefined frequency points at which the calibration data is required for the external test equipment (ETEs) for each UUT model.

Table 2 lists the equipments that need to be calibrated at the specific frequency points listed in Table 1.

Please have your ETEs calibrated at those frequency points and enter the calibration data in TME before you run any test.

Table 1

Table 2

+Refer to Table 1 for the required frequency points.

Range 1: 9 kHz to 50 MHz

Range 2: 50 MHz to 6 GHz

Tip:

To enter the Device (power splitter or power sensor) calibration data into TME, follow these steps if electronic copy of the calibration data is available:

1. Add and map the required Device in Configure Test Stations.
2. Click the Device icon then the Edit Cal Data button.
3. Click the Export button and select csv as the saved file format.
4. Open the exported csv file. Copy and paste the matching calibration data into the csv file.
5. Check the unit of the data in each column matches that required in TME.
6. Check the frequency is in ascending order.
7. Click the Import button in the Calibration Data Editor to import the updated csv file.
8. Enter the proper Cal Due Date and Trace Number.
9. Click Save on the toolbar or the OK button.