Keysight (Agilent) 85052D Service Manual

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User’s and Service Guide

Agilent Technologies 85052D

3.5 mm Economy Calibration Kit

This manual directly applies to 85052D calibration kits with serial number prefix

3106A.

Agilent Part Number: 85052-90079

Printed in USA

Print Date: September 2007

Supersedes: November 2004

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, AGILENT 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. AGILENT 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 AGILENT 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.

DFARS/Restricted Rights Notice

If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as “Commercial computer software” as defined in DFAR 252.227-7014 (June 1995), or as a “commercial item” as defined in FAR

2.101(a) or as “Restricted computer software” as defined in FAR 52.227-19 (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of Software is subject to Agilent Technologies’ standard commercial license terms, and non-DOD Departments and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR 52.227-19(c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in FAR 52.227-14 (June 1987) or DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data.

Printing Copies of Documentation from the Web

To print copies of documentation from the Web, download the PDF file from the Agilent web site:

•Go to http://www.agilent.com.

• Enter the product model number in the search function and click Search.

• Click on the Manuals hyperlink.

• Open the PDF of your choice and print the document.

iii

Contents

1 General Information

Calibration Kit Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Calibration Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Equipment Required but Not Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Incoming Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Recording the Device Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

Calibration Kits Documented in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Calibration Kit History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

85052D Kits with Serial Prefix 3027A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Precision Slotless Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Clarifying the Terminology of a Connector Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

2 Specifications

Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Temperature—What to Watch Out For . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Pin Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Residual Errors after Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

3 Use, Maintenance, and Care of the Devices

Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Look for Obvious Defects and Damage First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Inspect the Mating Plane Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Inspect Female Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Cleaning Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Gaging Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Connector Gage Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

When to Gage Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Gaging Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

How to Make a Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

How to Separate a Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

Handling and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

4 Performance Verification

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

How Agilent Verifies the Devices in Your Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Recertification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

How Often to Recertify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Where to Send a Kit for Recertification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

5 Troubleshooting

Troubleshooting Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

85052D Contents-v

Contents

Where to Look for More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Returning a Kit or Device to Agilent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Contacting Agilent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

6 Replaceable Parts

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

A Standard Definitions

Class Assignments and Standard Definitions Values are Available on the Web. . . . . . . . . .A-2

Contents-vi 85052D

1 General Information

85052D 1-1

General Information

Calibration Kit Overview

The Agilent 85052D 3.5 mm calibration kit is used to calibrate Agilent network analyzers up to 26.5 GHz for measurements of components with 3.5-mm connectors.

Kit Contents

The 85052D calibration kit includes the following items:

• user’s and service guide

• offset opens and shorts, and broadband loads

• three 3.5 mm adapters

• 5/16 in, 90 N-cm (8 in-lb) torque wrench

• 7 mm open-end wrench

• data disk that contains the calibration definitions of the devices in the calibration kit for 8510 systems.

• data disk set that contains the specifications and performance verification data for 8510 systems.

NOTE

For measurement convenience, the kit also contains three 3.5 mm adapters. The adapters are primarily intended for use in measuring non-insertable devices, but can also be used as a connector saver.

Refer to Chapter 6 for a complete list of kit contents and their associated part numbers.

Broadband Loads

The broadband loads are metrology-grade terminations that have been optimized for performance up to 26.5 GHz. The rugged internal structure provides for highly repeatable connections. A distributed resistive element on sapphire provides excellent stability and return loss.

Offset Opens and Shorts

The offset opens and shorts are built from parts that are machined to the current state-of-the-art in precision machining.

A backup copy of each data disk and printout should be made immediately upon receipt of the calibration kit. Refer to your analyzer user’s guide or embedded Help system for instructions on duplicating a disk.

The offset short’s inner conductors have a one-piece construction, common with the shorting plane. The construction provides for extremely repeatable connections.

The offset opens have inner conductors that are supported by a strong, low-dielectric constant plastic to minimize compensation values.

Both the opens and shorts are constructed so that the pin depth can be controlled very tightly, thereby minimizing phase errors. The lengths of the offsets in the opens and shorts are designed so that the difference in phase of their reflection coefficients is approximately

1-2 85052D

General Information

Calibration Kit Overview

180 degrees at all frequencies.

Adapters

Like the other devices in the kit, the adapters are built to very tight tolerances to provide good broadband performance and to ensure stable, repeatable connections.

The adapters are designed so that their nominal electrical lengths are the same, which allows them to be used in calibration procedures for non-insertable devices.

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

• downloaded from the Web at http:na.tm.agilent.com/pna/caldefs/stddefs.html.

• loaded from the provided disk (8510 series network analyzers only)

• manually entered from the front panel

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.

Equipment Required but Not Supplied

Some items are required or recommended for successful operation of your kit, but are not supplied with the kit. Refer to Table 6-2 on page 6-3 for a list of these items and for ordering information.

85052D 1-3

General Information

Incoming Inspection

Refer to Chapter 6 to verify a complete shipment. Use Table 1-1 to record the serial numbers of all serialized devices in your kit.

Check for damage. 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

Agilent” on page 5-5. Agilent will arrange for repair or replacement of incomplete or

damaged shipments without waiting for a settlement from the transportation company. See "Returning a Kit or Device to Agilent," on page 5-4.

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

Table . Recording the serial numbers will prevent confusing the devices in this kit with

similar devices from other kits.

The adapters included in the kit are for measurement convenience only and are not serialized.

Table 1-1 Serial Number Record for the 85052D

Device Serial Number

Calibration kit

Broadband load –m–

Broadband load –f–

Open –m–

Open –f–

Short –m–

Short –f–

_______________________________

1-4 85052D

General Information

Calibration Kits Documented in This Manual

This manual applies to any 8552B calibration kit with serial number prefix 3106A. If your calibration kit has a different serial number prefix, refer to the next section for information on how this manual applies.

Calibration Kit History

This section describes calibration kits with serial number prefixes lower that the ones listed on the title page.

85052D Kits with Serial Prefix 3027A

These calibration kits did not have the calibration constants disk to support the Agilent 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.

85052D 1-5

General Information

Precision Slotless Connectors

The female 3.5 mm connectors in this calibration kit are metrology-grade, precision slotless connectors (PSC). A characteristic of metrology-grade connectors is direct traceability to national measurement standards through their well-defined mechanical dimensions.

Conventional female center conductors are slotted. When mated, the female center conductor is flared by the male pin. Because physical dimensions determine connector impedance, electrical characteristics of the female connector (and connection pair) are dependent upon the mechanical dimensions of the male pin. While connectors are used in pairs, their male and female halves are always specified separately as part of a standard, instrument, or device under test. Because of these facts, making precision measurements with the conventional slotted connector is very difficult, and establishing a direct traceability path to primary dimensional standards is nearly impossible.

The precision slotless connector was developed to eliminate these problems. All PSCs are female. A PSC incorporates a center conductor with a solid cylindrical shell that defines the outside diameter of the female center pin. Its outside diameter and, therefore, the impedance in its region does not change. The inner part provides an internal contact that flexes to accept the allowed range of male pin diameters.

The calibration of a network analyzer having a conventional slotted female connector on the test port remains valid only when the device under test and all calibration standards have identical male pin diameters. For this reason PSC test port adapters are supplied in most calibration kits.

Precision slotless connectors have the following characteristics:

• There is no loss of traceable calibration on test ports when the male pin diameter of the connector on the device under test is different from the male pin diameter of the calibration standard.

• The female PSC and its mating male connector can be measured and specified separately as part of the device either is attached to.

• All female connectors can have a known, stable impedance based only on the diameters of their inner and outer conductors.

• Female calibration standards can be fully specified. Their specifications and traceability are unaffected by the diameter of the male mating pin.

• A fully traceable performance verification is made using a precision 50 ohm airline having a PSC.

• Measurement repeatability is enhanced due to non-changing connector characteristics with various pin diameters.

With PSCs on test ports and standards, the percentage of accuracy achieved when measuring at 50 dB return loss levels is comparable to using conventional slotted connectors measuring devices having only 30 dB return loss. This represents an accuracy improvement of about 10 times.

1-6 85052D

General Information

Clarifying the Terminology of a Connector Interface

In this document and in the prompts of the PNA calibration wizard, the gender of cable connectors and adapters is referred to in terms of the center conductor. For example, a connector or device designated as 1.85 mm –f– has a 1.85 mm female center conductor.

8510-series, 872x, and 875x ONLY: In contrast, during a measurement calibration, the network analyzer softkey menus label a 1.85 mm calibration device with reference to the sex of the analyzer’s test port connector—not the calibration device connector. For example, the label SHORT(F) refers to the short that is to be connected to the female test port. This will be a male short from the calibration kit.

Table 1-2 Clarifying the Sex of Connectors: Examples

Terminology Meaning

Short

–f–

Short (f) Male short (male center conductor) to be connected to female port

A connector gage is referred to in terms of the connector that it measures. For instance, a male connector gage has a female connector on the gage so that it can measure male devices.

Female short (female center conductor)

Preventive Maintenance

The best techniques for maintaining the integrity of the devices in the kit include:

• routine visual inspection

• cleaning

• proper gaging

• proper connection techniques

All of these are described in Chapter 3. Failure to detect and remove dirt or metallic particles on a mating plane surface can degrade repeatability and accuracy and can damage any connector mated to it. Improper connections, resulting from pin depth values being out of the observed limits (see Table 2-2 on page 2-4) or from bad connection techniques, can also damage these devices.

85052D 1-7

General Information

Clarifying the Terminology of a Connector Interface

1-8 85052D

2 Specifications

85052D 2-1

Specifications

Environmental Requirements

NOTE

Samples of this product have been type-tested in accordance with the Agilent Environmental Test Manual and verified to be robust against the environmental stresses of storage, transportation and end-use; those stresses include but are not limited to temperature, humidity, shock, vibration, altitude and power-line conditions. Test methods are aligned with IEC

60068-2 and levels are similar to MIL-PRF-28800F Class 3.

Table 2-1 Environmental Requirements

Parameter Limits

Temp er at ur e

Operating

Storage −40 °C to +75 °C

Error-corrected range

Altitude

Operating < 4,500 meters (≈15,000 feet)

Storage < 4,500 meters (≈15,000 feet)

Relative humidity Type tested, 0% to 95% at 40 °C, non-condensing

+20 °C to +26 °C

± 1 °C of measurement calibration temperature

a. The temperature range over which the calibration standards maintain conformance to their

specifications.

b. 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.

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

Table 2-1.

IMPORTANT

Avoid unnecessary handling of the devices during calibration because your fingers are a heat source.

2-2 85052D

Specifications

Mechanical Characteristics

Mechanical characteristics such as center conductor protrusion and pin depth are not performance specifications. They are, however, important supplemental characteristics related to electrical performance. Agilent Technologies verifies the mechanical characteristics of the devices in the kit with special gaging processes and electrical testing. This ensures that the device connectors do not exhibit any center conductor protrusion or improper pin depth when the kit leaves the factory.

“Gaging Connectors” on page 3-6 explains how to use gages to determine if the kit devices

have maintained their mechanical integrity. Refer to Table 2-2 for typical and observed pin depth limits.

Pin Depth

Pin depth is the distance the center conductor mating plane differs from being flush with the outer conductor mating plane. See Figure 2-1. The pin depth of a connector can be in one of two states: either protruding or recessed.

Protrusion is the condition in which the center conductor extends beyond the outer conductor mating plane. This condition will indicate a positive value on the connector gage.

Recession is the condition in which the center conductor is set back from the outer conductor mating plane. This condition will indicate a negative value on the connector gage.

Figure 2-1 Connector Pin Depth

85052D 2-3

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Keysight (Agilent) 85052D Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 General Information