Keysight Technologies 11644A Series Manual

Keysight Technologies 
11644A X, P, and K 
Waveguide Calibration Kits

User’s and Service
Guide
This manual applies to 11644A series calibration
kits with serial number prefix 3032A.

X, P, and K 11644A i

ii X, P, and K 11644A
Documentation Warranty
THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED "AS IS," AND IS SUBJECT TO BEING
CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED
BY APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED WITH
REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR PERFORMANCE OF THIS DOCUMENT OR
ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND THE USER HAVE A SEPARATE
WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT
CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL
CONTROL.
Assistance
Product maintenance agreements and other customer assistance agreements are available for Keysight
products.
For any assistance, contact Keysight Technologies. Refer to page 6-4 for a list of Keysight contacts.
Printing Copies of Documentation from the Web
To print copies of documentation from the Web, download the PDF file from the Keysight web site:
•Gotowww.keysight.com.
• Enter the document’s part number (located on the title page) in the Search box.
•ClickSearch.
• Open the PDF and print the document.

Contents
X, P, and K 11644A TOC i
1. General Information
Calibration Kit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Calibration Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Equipment Required but Not Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Calibration Kit History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
11644A Series Kits with Serial Prefix 3012A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Incoming Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Recording the Device Serial Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
When to Calibrate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2. Specifications
Environmental Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Temperature—What to Watch Out For . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
1/4 Wavelength Shims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Shorts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Measurement Uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
3. User Information
Calibration Devices and Their Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Short . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
¼ Wavelength Shim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Standard Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Measurement Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Offset Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Offset Short . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Reflect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Short . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Thru . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
¼ Wavelength Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
¼ Wavelength Short . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Changing the ¼ Wavelength Shim Calibration Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
4. Use, Maintenance, and Care of the Devices
Electrostatic Discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Visual Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Cleaning the Mating Plane Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Waveguide Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Precision Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

TOC ii X, P, and K 11644A
Contents
Aligning Two Precision Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Aligning a Precision and a Non-Precision Flange. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Tightening a Flange Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Inspecting a Flange Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Handling and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
5. Performance Verification
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
How Keysight Verifies the Devices in Your Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Recertification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
How Often to Recertify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Where to Send a Kit for Recertification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Termination Return Loss Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
In Case of Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
System Operation Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
8510 System Operation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
The S11 and S22 of a Shorted Standard Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
The S11 and S22 of a Thru Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
The S21 and S12 of a Thru Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
In Case of Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
872x System Operation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
The S11 and S22 of a Shorted Standard Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
The S11 and S22 of a Thru Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
The S21 and S12 of a Thru Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
In Case of Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
6. Troubleshooting
Troubleshooting Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Where to Look for More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Returning a Kit or Device to Keysight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Contacting Keysight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
7. Replaceable Parts
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
A. Standard Definitions
Class Assignments and Standard Definitions Values are Available on the Web . . . . . . . . . . . . . . . . . . . . . . . . A-2

1 General Information

1-2 X, P, and K 11644A
General Information
Calibration Kit Overview
Calibration Kit Overview
This waveguide calibration kit is used to calibrate network analyzer systems (such as the Keysight 8510,
872x, or PNA series). With the calibration data properly loaded in the network analyzer and a measurement
calibration completed, systematic errors are minimized.
Kit Contents
Use the Contents List in the shipping container to verify the completeness of your shipment. Although this
list is the most accurate, you can also use the illustrations in Chapter 7 to verify the items in your shipment.
If your shipment is not complete, contact Keysight Technologies - refer to“Contacting Keysight” on page
6-4.
The standards in this calibration kit allow you to perform simple 1- or 2-port and TRM (thru-reflect-match)
calibrations.
For your convenience, two different lengths of screws are provided in this kit. While you can use the long
screws for any connection, the shorter screws provide a faster connection for two-flange connections.
Calibration Definitions
The calibration kit must be selected and the calibration definitions for the devices in the kit installed in the
network analyzer prior to performing a calibration.
The calibration definitions can be:
• resident within the analyzer
• manually entered from the front panel
Class assignments and standard definitions may change as more accurate model and calibration methods
are developed. You can download the most accurate class assignments and standard definitions from
Keysight’s Calibration Kit Definitions Web page at
http://na.support.keysight.com/pna/caldefs/stddefs.html.
Refer to your network analyzer user’s guide or embedded Help for instructions on manually entering
calibration definitions, selecting the calibration kit, and performing a calibration.
NOTE The 8510 network analyzer is no longer being sold or supported by Keysight. However, you
can download the 8510 class assignments and standard definitions from Keysight’s
Calibration Kit Definitions Web page at
http://na.support.keysight.com/pna/caldefs/stddefs.html.

X, P, and K 11644A 1-3
General Information
Calibration Kit History
Equipment Required but Not Supplied
Cleaning supplies and various electrostatic discharge (ESD) protection devices are not supplied with the
calibration kit but are required to ensure successful operation of the kit. Refer to Table 7-4 on page 7-10 for
their associated part numbers.
Calibration Kit History
This manual applies to any Keysight 11644A series (X, P, or K) waveguide calibration kits whose serial
number prefix is 3032A and above. If your calibration kit has a different serial number prefix, refer to the
next section for information on how this manual applies.
11644A Series Kits with Serial Prefix 3012A
These calibration kits did not have a calibration definitions disk to support the Keysight 8510C network
analyzer. The part numbers provided in this manual are the recommended replacement parts for these kits.
The devices in these kits should meet the specifications published in this manual.
Incoming Inspection
Verify that the case and its contents are not damaged. The foam-lined storage case provides protection
during shipping. If the case or any device appears damaged, or if the shipment is incomplete, refer to
“Contacting Keysight” on page 6-4. Keysight will arrange for repair or replacement of incomplete or
damaged shipments without waiting for a settlement from the transportation company. Refer to “Returning
a Kit or Device to Keysight” on page 6-3.

1-4 X, P, and K 11644A
General Information
Recording the Device Serial Numbers
Recording the Device Serial Numbers
In addition to the kit serial number, the devices in the kit are individually serialized (serial numbers are
labeled onto the body of each device). Record these serial numbers in the appropriate table. Recording the
serial numbers will prevent confusing the devices in this kit with similar devices from other kits.
Table 1-1 Serial Number Record
Device Serial Number

Frequency band

______________________________
Calibration kit ______________________________
Te r m i n a t i o n ______________________________
Te r m i n a t i o n ______________________________
Standard section ______________________________
Shim ______________________________
Short ______________________________
Adapters
7 mm coax-to-waveguide (X-band WR-90) ______________________________
7 mm coax-to-waveguide (X-band WR-90) ______________________________
7 mm coax-to-waveguide (P-band WR-62) ______________________________
7 mm coax-to-waveguide (P-band WR-62) ______________________________
(f) 3.5 mm coax-to-waveguide (K-band WR-42) ______________________________
(m) 3.5 mm coax-to-waveguide (K-band WR-42) ______________________________

X, P, and K 11644A 1-5
General Information
Preventive Maintenance
Preventive Maintenance
The best techniques for maintaining the integrity of the devices in the kit include:
• routine visual inspection
• routine cleaning
• proper gaging
• proper connection techniques
All of these are described in Chapter 4. Failure to detect and remove dirt or metallic particles on a mating
plane surface can degrade repeatability and accuracy and can damage any device mated to it. Improper
connections resulting from poor connection techniques, can also damage these devices.
When to Calibrate
A network analyzer calibration remains valid as long as the changes in the systematic error are
insignificant. This means that changes to the uncorrected leakages (directivity and isolation), mismatches
(source match and load match), and frequency response of the system are small (<10%) relative to
accuracy specifications.
Change in the environment (especially temperature) between calibration and measurement is the major
cause in calibration accuracy degradation. The major effect is a change in the physical length of external
and internal cables. Other important causes are dirty and damaged test port connectors and calibration
standards. If the connectors become dirty or damaged, measurement repeatability and accuracy is affected.
Fortunately, it is relatively easy to evaluate the general validity of the calibration. To test repeatability,
remeasure one of the calibration standards. If you can not obtain repeatable measurements from your
calibration standards, maintenance needs to be performed on the test port connectors, cables and
calibration standards. Also, maintain at least one sample of the device under test or some known device as
your reference device. A verification kit may be used for this purpose. After calibration, measure the
reference device and note its responses. Periodically remeasure the device and note any changes in its
corrected response which can be attributed to the test system. With experience you will be able to see
changes in the reference responses that indicate a need to perform the measurement calibration again.

1-6 X, P, and K 11644A
General Information
Preventive Maintenance

2 Specifications

2-2 X, P, and K 11644A
Specifications
Environmental Requirements
Environmental Requirements
Temperature—What to Watch Out For
Changes in temperature can affect electrical characteristics. Therefore, the operating temperature is a
critical factor in performance. During a measurement calibration, the temperature of the calibration devices
must be stable and within the range shown in Tabl e 2 - 1 .
IMPORTANT Avoid unnecessary handling of the devices during calibration because your fingers act as a
heat source and may increase the temperature of the device.
Table 2-1 Environmental Requirements
Parameter Limits
Te m p e r a t u r e
Operating1
1. The temperature range over which the calibration standards maintain performance to their specifications.
+20 C to +26 C
Storage 40 C to +75 C
Error-corrected range2
2. The allowable network analyzer ambient temperature drift during measurement calibration and during
measurements when the network analyzer error correction is turned on. Also, the range over which the
network analyzer maintains its specified performance while correction is turned on.
1 C of measurement calibration temperature
Relative humidity Type tested, 0% to 95% at 40 C, non-condensing

X, P, and K 11644A 2-3
Specifications
Mechanical Characteristics
Mechanical Characteristics
Ta b l e 2 - 2 and Ta bl e 2 - 3 list the typical characteristics of the adapters and 1/4 wavelength shims in your kit.
These are not specifications, but are included as additional information.
Table 2-2 Mechanical Characteristics of Adapters
Frequency band SWR1
1. As measured with no gap between the full diameters of the male and female center conductors.
Insertion
Loss
Center Conductor Pin Recession
Tole ra nce
Equivalent
Flange Type
X11644A WR-90 < 1.05 0.08 dB 0.0076 to 0.038 mm (0.0003 to 0.0015 in) UG-135/U
P11644A WR-62 < 1.06 0.10 dB 0.0076 to 0.038 mm (0.0003 to 0.0015 in) UG-419/U
K11644A WR-42 < 1.07 0.12 dB 0.0076 to 0.038 mm (0.0003 to 0.0015 in) UG-597/U

2-4 X, P, and K 11644A
Specifications
Mechanical Characteristics
1/4 Wavelength Shims
Figure 2-1. 1/4 Wavelength Shims
Shorts
All waveguide shorts are flat within 0.008 mm.
Table 2-3 Mechanical Characteristics of 1/4 Wavelength Shims
Frequency band Waveguide
Band
W (mm) H (mm) R (mm) Thickness (mm)
11664-20021 WR90 22.86 ±0.01 10.16 ±0.01 0.13 max 9.78 ±0.02
11664-20020 WR62 15.80 ±0.01 7.90 ±0.01 6.50 ±0.02
11664-20019 WR42 10.671 ±0.08 4.318 ±0.008 4.5 ±0.02

X, P, and K 11644A 2-5
Specifications
Electrical Specifications
Electrical Specifications
Ta b l e 2 - 4 through Tab l e 2 - 5 list the electrical specifications of the terminations, ¼ wavelength shims, and
standard sections in your kit.
Table 2-4 Electrical Characteristics and Specifications
Device Frequency Termination Specification
X11644A WR-90 8.2 to 12.4 GHz return loss 42d1
1. Effective return loss accounts for line section, connector, and load stability as used in a
network analyzer to define directivity after calibration.
P11644A WR-62 12.4 to 18 GHz return loss 42d1
K11644A WR-42 18 to 26.5 GHz return loss 42d1
Tabl e 2-5 Electrical Specifications of ¼ Wavelength Shims
Part Number Waveguide Band Return Loss (dB)1
1. Return loss specification is guaranteed by
mechanical specifications.
11664-20021 WR90 55
11664-20020 WR62
11664-20019 WR42
Table 2-6 Electrical Specifications of Standard Sections
Device Frequency Standard Section Specification
X11644A WR-90 8.2 to 12.4 GHz Return loss 42d
P11644A WR-62 12.4 to 18 GHz Return loss 42d
K11644A WR-42 18 to 26.5 GHz Return loss 42d

2-6 X, P, and K 11644A
Specifications
Electrical Specifications
Measurement Uncertainty
Vector Network Analyzer (VNA) measurement accuracy depends on the accuracy of the calibration
standards, the calibration method employed, instrumentation accuracy and stability, environmental factors,
and the actual characteristic of the device under test (DUT). Because of the complexity in these
relationships, Keysight created uncertainty computation tools to calculate the overall measurement
uncertainty of a VNA system. In the past, when the Keysight 8510 VNA system was being produced, a
“Specification and Verification” RMB program was included to perform an uncertainty calculation.
Currently, for the Keysight PNA and ENA families of network analyzers, a customer can download the VNA
Uncertainty Calculator program. (To access this program from the Web, navigate to www.keysight.com and
enter “calculator” in the Search function.) Explanations of the uncertainty model are provided in the PNA
embedded Help files. Additional references on VNA measurements are available from the Keysight
Applications Notes and Technical Papers Web page, accessed from www.keysight.com by clicking on the
Application Notes and Technical Papers hyperlink.
Certification
Keysight Technologies certifies that this product met its published specifications at the time of shipment
from the factory. Keysight further certifies that its calibration measurements are traceable to the United
States National Institute of Standards and Technology (NIST) to the extent allowed by the institute’s
calibration facility, and to the calibration facilities of other International Standards Organization members.
See “How Keysight Verifies the Devices in Your Kit” on page 5-2 for more information.

3 User Information

3-2 X, P, and K 11644A
User Information
Calibration Devices and Their Use
Calibration Devices and Their Use
The P, K, and X11644A waveguide calibration kits contain termination load, standard sections, shim, and
short.
For measurement convenience, these kits contain either 7 mm coax-to-waveguide adapters for P-band and
X-band, or 3.5 mm coax-to-waveguide adapters for K-band. The adapters are intended for adapting coaxial
test sets to waveguide.
The following briefly describes the design and construction of all the calibration kit devices.
Short
A short is also called a flush short. It is connected directly to the test port, or used as an offset short when
combined with the ¼ wavelength shim.
Termination
A termination is also called a load. It is connected directly to the test port, or used as an offset load when
combined with the ¼ wavelength shim.
¼ Wavelength Shim
A ¼ wavelength shim is also called an offset, or ¼ wavelength section. The shim is terminated by the
short, fixed load, or the second test port of the analyzer.
Standard Section
A standard section is used to check system operation after you complete a calibration.