Agilent 87075C Users Guide

Download

User’s and Service Guide

Agilent Technologies

87050E and 87075C

Multiport Test Set

For E506x Network Analyzers

Part No. 87075-90027

Printed in USA

Print Date: February 2006

Supersedes: March 2004

WARRANTY STATEMENT

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 P ARTICULAR 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 INFORMA TION 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 perfor mance 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 (J une 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 (J une 1987) or any equivalent agency regulation or contract clause . Us e, duplication or disclosure of Software is subject to Agilent Technologies’ standard commercial license terms, and non-DOD Departments and Agencies of the U.S. Governm e nt w ill receiv e n o greater th an R estricted Ri ghts 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.

Certification

Agilent Technologies, Inc. certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies, Inc. further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.

Assistance

Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies, Inc. products. For information about these agreem ents and for other assistance, contact Ag i le n t . R efer to

page 126.

Safety Notes

The following safety notes are used throughout this manual. F amiliar ize yourse lf with e ac h of t he no tes and it s meaning before operating this instrument. All p ertinent safet y notes for us ing this product are located in

iii

Chapter 10 .

WARNING W arning denotes a hazard. I t calls attention to a procedu re

which, if not correctly performed or adhered to, could result in injury or loss of life. Do not proceed beyond a warning note until the indicated conditions are fully understood and met.

CAUTION Caution denotes a hazard. It calls attention to a procedure that, if

not correctly performed or adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a caution sign until the indicated conditions are fully understood and met.

Printing Copies of This Document

To pr int copies of documentat ion from the Web, download the PDF file from the Agilent web site:

• Go to http://www.agilent.com.

• Enter the document’ s part numbe r (located o n the titl e page) in

the Search box.

• Click Search. .

Contents

1. Introduction and Installation

Introduction to the Multiport Test Set. . . . . . . . . . . . . . . . . . . . . . . . . . . .2

A Complete Multiport Test System. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Fully Characterize Your Devices with a Single Connection. . . . . . . . . .2

Improve Your Competitiveness with a Fully Specified Test System. . .3 Eliminate Redundant Connection of Calibration Standards with Test

Set Cal3

Reduce the Effects of Test-System Drift with SelfCal . . . . . . . . . . . . . .4

Decrease Calibration Times and Increase Production Throughput . . .4

Improve Measurement Accuracy with Two-Port Calibration . . . . . . . .4

Typeface Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

If You are Using an 8712ET/ES or 8714ET/ES Analyzer . . . . . . . . . . . . .6

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Step 1. Check the Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Step 2. Determine Network Analyzer Compatibility . . . . . . . . . . . . . .13

Step 3. Connect the Test Set to the Analyzer . . . . . . . . . . . . . . . . . . .14

Step 4. Satisfy Electrical and Environmental Requirements . . . . . . .16

Step 5. Activate the Test Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Step 6. Connect Peripheral Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Cleaning the Test Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

2. Making Measurements

Measurement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Setting port connections of the multi-port test set. . . . . . . . . . . . . . . .24

Setting the measurement conditions. . . . . . . . . . . . . . . . . . . . . . . . . . .25

Calibrating the test set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Performing Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Contents-v

Contents

3. Test Set Cal and SelfCal

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Test Set Cal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

SelfCal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Test Set Cal: An Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Setting Up the Measurement Parameters. . . . . . . . . . . . . . . . . . . . . . 34

Determining the Best Position for the Calibration Reference Plane. 36

Determining the Type of Calibration Kit to Use. . . . . . . . . . . . . . . . . 38

Determine the Test Set Ports to Be Used . . . . . . . . . . . . . . . . . . . . . . 39

Performing the Test Set Cal with a Mechanical Calibration Kit . . . . 39

Performing the Test Set Cal with an ECal Module. . . . . . . . . . . . . . . 42

Saving the Test Set Cal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Recalling the Test Set Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Copying the Test Set Cal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Executing Self Cal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Test Set Cal and SelfCal: Theory of Operation. . . . . . . . . . . . . . . . . . . . 47

4. Front/Rear Panel

Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Line Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Test Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

The REFLECTION Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

The TRANSMISSION Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

The Chassis Ground Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

The PORT CONNECTION Status LEDs . . . . . . . . . . . . . . . . . . . . . . 55

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

The PARALLEL IN Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

The PARALLEL OUT Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Line Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Contents-vi

Contents

5. Key Reference

Cal Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

6. SCPI Command Reference

7. COM Object Reference

8. Specifications

About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Test Set Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Limitation of Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Exclusive Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Contacting Agilent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

9. Service

Automated Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Program Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

Performance Verification Test Results . . . . . . . . . . . . . . . . . . . . . . . .133

Manual Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138

Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

The Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

The LED Display Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Contents-vii

Contents

The Main Switch Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Post-Repair Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Rebuilt-Exchange Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Major Parts and Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Cables, Front Panel, and Main Board Assembly — Option 012 (75

Ω ανδ 50 Ω)147

Cables, Front Panel, and Main Board Assembly— Option 008 (50 Ω

only)150

Instrument Covers and Associated Parts . . . . . . . . . . . . . . . . . . . . . 156

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

10. Safety and Regulatory Information

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Statement of Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Shipping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Notice for Germany: Noise Declaration . . . . . . . . . . . . . . . . . . . . . . 166

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Contents-viii

1 Introduction and Installation

Introduction and Installation

Introduction to the Multiport Test Set

• The 87050E is a 50-ohm multiport test set that is available with 4, 8, or 12 test

ports.

• The 87075C is a 75-ohm multiport test set that is available with 6 or 12 test

ports.

A Complete Multiport Test System

87050E and 87075C multiport test sets are designed to work with E5061A (1.5 GHz) and E5062A (3 GHz) RF network analyzers to provide complete measurement systems for 50 ohm and 75 oh m multipor t devic es. These tes t systems offer fast measurement speed, high accuracy, and productivity features that will maximize your production throughput. They feature:

• specified performance to 1.3 GHz (87075C) or 2.2 GHz (87050E - with typical

performance to 3 GHz)

• solid-state switches for fast, repeatable, and reliable switching between

measurement paths

Fully Characterize Your Devices with a Single Connection

A single connection between the multiport test set and each port of the DUT allows complete testing of all transmission paths and port reflection characteristics. Agilent multiport test systems eliminate time-consuming reconnections to the DUT, keeping your production costs down and your volumes up. By reducing the number of RF connections, you also:

• lower the risk of misconnections

• reduce operator fatigue

• minimize wear on cables, fixtures, connectors, and the DUT

2 Chapter 1

Introduction and Installation

Introduction to the Multiport Test Set

Improve Your Competitiveness with a Fully Specified Test System

A multiport test set coupled with an E5061A/E5062A network analyzer offers fully specified performance at the actual test po rts, wheth er y ou measure in a fixture or at the end of test cables. Specified performance means you can:

• get the same results no matter which test station you use to measure your DUT

• correlate test data from many DUTs across multiple test systems

• reduce measurement uncertainty to tighten your product specifications

• increase customer confidence in your products

Eliminate Redundant Connection of Calibration Standards with Test Set Cal

Calibrating a multiport test set using two-port error correction and a traditional network analyzer requires a unique instrument state for each measurement path, forcing many redundant connections of calibration standards. As the number of ports increases, so does the number of connections required to calibrate all possible measurement paths. Full calibration of the multiport test system is quick and simple when performing a Test Set Cal:

• connect short, open, and load standards only once to each measurement port

• minimize the number of through standards required during calibration

Chapter 1 3

Introduction and Installation

Introduction to the Multiport Test Set

Reduce the Effects of Test-System Drift with SelfCal

SelfCal is an internally automated calibration technique that uses solid - state switches to measure calibration standards located inside the test set. SelfCal executes automatically in just a few seconds (at an interval you define), so the impact to your test process is minimal. Use SelfCal to:

• re-calibrate your multiport test system, returning it to the same measurement

accuracy achieved immediately after performing a Test Set Cal

• reduce the effects of test-system drift, improving overall measurement accuracy

between Test Set Cals

Since SelfCal does not correct for drift associated with interconnect elements between the test set and your DUT, it is essential to use high-quality test cables, adapters, and fixtures to ensure the best measurement accuracy.

Decrease Calibration Times and Increase Production Throughput

With SelfCal, a Test Set Cal needs to be performed about once per month, if within the specified temperature range. This is unlike other test systems that typically require calibration once or twice a day. Using Test Set Cal and SelfCal, you can:

• easily reduce your overall calibration times by a factor of twenty or more

• increase the amount of time a test station can be used for measuring

devices—typically, by three days per month.

Improve Measurement Accuracy with Two-Port Calibration

When using a multiport test set with an E5061A/E5062A with the option 27 5 S-parameter test set, Test Set Cal and SelfCal support full two-port calibrations. Two-port error correction greatly improves the effective load match of the test system, providing excellent measurement accuracy.

4 Chapter 1

Introduction and Installation

Introduction to the Multiport Test Set

Typeface Conventions

Sample (bold) Boldface type is used when a term is

defined or emphasis.

Sample (Italic) Italic type is used for emphasis.

[ ] key Indicates a hardkey (key on the front panel

or external keyboard) labeled “Sample.” “key” may be omitted.

Sample menu/button/box Indicates a menu/button/box on the screen

labeled “Sample” which can be selected/executed by clicking. “menu,” “button,” or “box” may be omitted.

Sample block/toolbar Indicates a block (group of hardkeys) or a

toolbar (s etup toolbar) labeled “Sample.”

Sample 1 - Sample 2 - Sample 3 Indicates a sequential operation of Sample

1, Sample 2, and Sample 3 (menu, button, or box). “-” may be omitted.

Chapter 1 5

Introduction and Installation

If You are Using an 8712ET/ES or 8714ET/ES Analyzer

This document is intended for use with E5061A and E5062A analyzers, so some of the information (for example, key pre sses and calibration features) doe s not apply to your analyzer. From the Agilent Technologies Web site, you can download and print a PDF copy of a manual specifically written for using the 87050E and 87075C multiport test sets with 8712ET/ES and 8714ET/ES analyzers. Go to

www.agilent.com and enter the manual’s part number (87050-90026) in the

Search function.

6 Chapter 1

Introduction and Installation

Installation

This section will guide you through the steps necessary to correctly and safely install your multiport test set. The steps are:

• “Step 1. Check the Shipment”

• “Step 2. Determine Network Analyzer Compatibility”

• “Step 3. Connect the Test Set to the Analyzer”

• “Step 4. Satisfy Electrical and Environmental Requirements”

• “Step 5. Activate the Test Set”

• “Step 6. Connect Peripheral Devices”

Chapter 1 7

Introduction and Installation

Installation

Figure 1-1 87050E Multiport Test Set — Three Versions

87050E Option 004 — Four Port Test Set

87050E Option 008 — Eight Port Test Set

8 Chapter 1

87050E Option 012 — Twelve Port Test Set

Figure 1-2 87075C Multiport Test Set — Two Versions

87075C Option 006 — Six Port Test Set

Introduction and Installation

Installation

Chapter 1 9

Introduction and Installation

Installation

87075C Option 012 — Twelve Port Test Set

10 Chapter 1

Introduction and Installation

Installation

Step 1. Check the Shipment

After you have unpacked your test set, keep the packaging materials to use if your instrument should need to be returned for maintenance or repair.

NOTE The packaging material is designed to protect the test set from damage that can

happen during shipping. Returning the test set in anything other than the original packaging may result in non-warranted damage.

Check the items received against Table 1-1 to make sure that you received everything.

Chapter 1 11

Introduction and Installation

Installation

Table 1-1 Test Set Accessories Supplied

Item No. Description Quantity Part Number

1 Power Cord 1 See Figure 4-3. 2 Type-N Cable (Analyzer to test set’s

REFLECTION Port)

3 Type-N Cable (Analyzer to test set’s

TRANSMISSION Port)

4 Type-N Cable (Analyzer to test set’s

REFLECTION Port)

5 Type-N Cable (Analyzer to test set’s

TRANSMISSION Port)

1(75 Ω) 87075-60026

(50 Ω)87050−60058

1(75 Ω)87075-60028

(50 Ω)87060−60060

1(75 Ω) 87075-60027

(50 Ω)87050−60059

1(75 Ω) 87075-60029

(50 Ω)87070−60061

6 Parallel Port Interface Cable 1 8120-6818 7 87050E and 87075C User's and Service Guide

87075-90027

(for E506x Network Analyzers) 87050E and 87075C User’s and Service Guide

87050-90026

(for 871x Network Analyzers) 8 Test Set Calibration Disk 1 N/A 9 Performance Te st Progr ams Disk Set

1 08714-60049

(DOS and LIF formats) 10 CD-ROM 1 08714-90051

1. Not to be used with a rack-mounted system or if the analyzer has had its bottom feet removed. See Figure 1-7 to see how these cables are to be connected.

2. You will only receive these cables if you ordered Option 1CM (rack mount kit). Use these cables if you are rack-mounting your system, or if the bottom feet of the analyzer have been removed. See Figure 1-7 for information on how to connect these cables.

12 Chapter 1

Figure 1-3 Test Set Accessories Supplied

Introduction and Installation

Installation

Step 2. Determine Network Analyzer Compatibility

If you are using a 8712ET/ES or 8714ET/ES analyzer, refer to “If You are Using an

8712ET/ES or 8714ET/ES Analyzer” on page 6.

Chapter 1 13

Introduction and Installation

Installation

Step 3. Connect the Test Set to the Analyzer

For using your system on a bench, configure and connect the two instruments as shown in Figure 1-4: Connect the Parallel In connector of the test set to the analyzer Parallel connector. Use the parallel cable that was shipped with the multiport test set.

If you will be installing your system in a rack, read “Installing the System in a

Rack,” next in this section, before connecting the test set to the analyzer.

Figure 1-4 System Configuration

Installing the System in a Rack

The rack mount kit for the test set is Option 1CM when ordered with the test set, or part number 5063-9214 when ordered separately.

14 Chapter 1

Introduction and Installation

Installation

NOTE There are special semi-rigid cables that should be used to connect the analyzer’s test

ports to the test set’s REFLECTION and TRANSMISSION ports when used in a rack (or a bench configuration where the analyzer’s bottom feet have been removed). These cables were shipped with your analyzer if you ordered Option 1CM. If you order the rack mount kit separately, you will need to order these special cables separately also. See Table 1-1 for part numbers.

T o install yo ur system in an 8 5043D rack, follow the instructions in the rack manual.

CAUTION When installing your system in other racks, improper installation may cause shock

hazards, overheating, dust contamination, and inferior system performance. For support details and information about installation and warranty, call Agilent T ech nolog ies. See page 126 for contact information.

CAUTION When installing the system in a cabinet, the convection into and out of the system

must not be restricted. The ambient temperature (outside the cabinet) must be less than the maximum operating temperature of the system by 4 °C for every 100 watts dissipated in the cabinet. If the total power dissipated in the cabinet is greater than 800 watts, then forced convection must be used.

Chapter 1 15

Introduction and Installation

Installation

Step 4. Satisfy Electrical and Environmental Requirements

NOTE Refer to your network analyzer’s User’s Guide for information on electrical and

environmental requirements for your network analyzer.

1. The line power module on your multiport test set has an autoranging input. It is designed to be used with an ac power source with a nominal voltage of either 115 V or 230 V.

2. Ensure the available ac power source meets the following requirements:

Nominal Range

Frequency: 50/60 Hz 47–63 Hz Line Voltage: 100/115 V or 230/240 V 90–264 V Power 45 W max

CAUTION This product has an autoranging line-voltage input. Be sure the supply voltage is

within the specified range.

If the ac line voltage does not fall within these ranges, an autotransformer that provides third-wire continuity to earth ground should be used.

3. Ensure the operating environment meets the following requirements for safety:

• indoor use

• altitude up to 15,000 feet (4,572 meters)

•temperature 0 °C to 55 °C

• maximum relative humidity 80% for temperatures up to 31 °C decreasing

linearly to 50% relative humidity at 40 °C

• use only in INSTALLATION CATEGORY II, and POLLUTION DEGREE

2, per IEC 1010 and 664 respectively

4. Verify that the power cable is not damaged, and that the power source outlet provides a protective earth ground contact. Note that the following illustration depicts only one type of power source outlet. Refer to Figure 4-3 to see the different types of power cord plugs that can be used with your test set.

16 Chapter 1

Figure 1-5 Protective Earth Ground

Introduction and Installation

Installation

WARNING This is a Safety Class I product (provided with a protective earthing ground

incorporated in the power cord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor, inside or outside the instrument, is likely to make t he instrument dangerous. Intentional interruption is prohibited.

Chapter 1 17

Introduction and Installation

Installation

5. Ensure there are at least two inches of clearance around the sides and back of the test set or the system cabinet.

Figure 1-6 Ventilation Clearance Requirements

6. Set up a static-safe workstation. Electrostatic discharge (ESD) can damage or destroy components.

• table mat with earth ground wire: part number 9300-0797

• wrist-strap cord with 1 Meg Ohm resistor: part number 9300-0980

• wrist-strap: part number 9300-1367

• heel straps: part number 9300-1308

• floor mat

18 Chapter 1

Step 5. Activate the Test Set

1. Connect the semi-rigid cables that were shipped with your test set as shown in

Figure 1-7. Check Table 1-1 to be sure that you are using the correct cables with

your system configuration (the cables you use will be different depending on whether you are using a bench system configuration—as shown in Figure

1-7—or a rack configuration).

Figure 1-7 Connect the Front Panel RF Cables

Introduction and Installation

Installation

NOTE Steps 2 and 3 must be performed before you can use your network analyzer to

control the multiport test set.

2. Turn on the test set .

3. Turn on the analyzer and Press [System] - to activate the test set control.

Chapter 1 19

87050/75 Setup - 87050/75 Control

Introduction and Installation

Installation

Step 6. Connect Peripheral Devices

After you’ve ensured that your syst em is work ing pro perl y, connect any peripherals that you intend to use with your system.

NOTE See your analyzer’s User’s Guide for information on peripheral connections.

20 Chapter 1

Preventive Maintenance

Preventive maintenance consists of checking the front panel conn ectors. This should be done at least every six months — more often if the test set is used daily on a production line or in a harsh environment.

Vis ually inspect the fron t panel conn ectors. The most important connecto rs are those to which the DUT is connected. All connectors should be clean and the center pins centered. The fingers of female connectors should be unbroken and uniform in appearance. If you are unsure whether the connectors are good, gauge the connectors to confirm that their dimensions are correct.

CAUTION 87050E multiport test set only:

Connecting 75 ohm cables to the front panel 50ohm connectors of the analyzer or test set usually results in intermittent or no electrical connections.

CAUTION 87075C multiport test set only:

Never connect 50 ohm cables to the front panel 75 ohm connectors of the analyzer or test set. Otherwise, irreparable connector damage will occur.

Introduction and Installation

Preventive Maintenance

Cleaning the Test Set

Use a dry cloth or one slightl y dampen ed with water to clean the external case parts. Do not attempt to clean internally.

WARNING To prevent electrical shock, disconnect the test set from power mains before

cleaning.

Chapter 1 21

Introduction and Installation

Preventive Maintenance

22 Chapter 1

2 Making Measurements

This chapter describes the procedure of measurement using the 87075C multi-port test set.

Making Measurements

Measurement Procedures

Measurement is performed in 4 major steps below.

• Setting the port connections of the multi-port test set

• Setting the measurement conditions

• Calibrating the test set

• Performing measurement Multiport test system needs to be properly installed before making measurem ents.

For the installation procedure see “Installation” on page 1-7.

Figure 2-1 Mult iport Test System

Setting port connections of the multi-port test set

The procedure to set the test set port connections is described below. Note that the port connections are set separately for each measurement channel.

Step 1. Press [Channel Next] or [Chann el Prev] to select the channel for which you want

to execute multi-port measurement.

24 Chapter 2

Step 2. Press [System].

Making Measurements

Measurement Procedures

Step 3. Press Step 4. Press Step 5. Press

87050/75 Setup. 87050/75 Control to make the status on. Reflection.

Step 6. Select the port to be connected to the reflection port. Step 7. Press

Transmission.

Step 8. Select the port to be connected to the transmission port. Step 9. Repeat Step 1 through Step 8 for all the channels to use.

Setting the measurement conditions

The procedure to set the measurement conditions is described below. Keys or softkeys typically used in each step are shown. For more information, see the E5061A/E5062A User’s Guide.

Step 1. Setting measurement parameter for each trace

Set measurement parameter to be measured for each trace.

[Meas] -Corresponding softkey

Step 2. Setting the stimulus for each trace

Set the stimulus (sweep type, sweep range, power range, etc.) for each trace.

[Sweep Setup] - Corresponding softkey [Start], [Stop], [Center], [Span] (each key for specifying the sweep range)

Step 3. Setting the data format for each trace

Set the display data format (log amplitude, polar coordinates, etc.).

[Format] - Corresponding softkey

Step 4. Setting the scale for each trace

Set the scale for each trace so that you can observe comfortably.

[Scale] -

Divisions

[Scale] - Scale/Div

Chapter 2 25

Making Measurements

Measurement Procedures

[Scale] - Reference Position [Scale] - Reference Value

Step 5. Other settings

Set the graph title, trace color, and so on as necessary.

[Display] -

Edit Title Label

[System] - Misc Setup - Color Setup - Corresponding softkey

26 Chapter 2

Making Measurements

Measurement Procedures

Calibrating the test set

The procedure to calibrate the test set is described below. Note that the calibration procedure described here is a typical one using a mechanical calibration kit. For more detailed information, including procedures using ECal, see Chapter 3.

Step 1. Selecting a mechanical calibration kit

Select a mechanical calibration kit you want to use for calibration. You can select a mechanical calibration kit using one of the following 2 methods.

[Cal] - Cal Kit - Subsequent corresponding softkeys [Cal] - Test Set Cal - Calibration - Cal Kit - Subsequent corresponding softkeys

Step 2. Selecting Cal Type

Select a calibration method from full 2-port calibration or enhanced response calibration. If the E5061A/62A is of the T/R test set type you cannot select the full 2-port calibration.

[Cal] - Test Set Cal - Calibration - Cal Type

Step 3. Selecting an adjacent port pair and executing the measurement of the calibration

standards Select an adjacent port pair for which you want to perform test set calibration.

Adjacent port pairs are: [1, 2], [3, 4], [5, 6], [7, 8], [9, 10], and [11, 12]. For the 87050E and 87075C multi-port test set, calibration is performed for each port pair. For this reason, when you want to use, for example, ports 1 and 5, you need to calibrate 4 ports (ports 1 and 2, and ports 5 and 6).

[Cal] - Test Set Cal - Calibration - Port x-y - Port x Open [Cal]

- Test Set Cal - Calibration - Port x-y - Port x Short

- Test Set Cal - Calibration - Port x-y - Port x Load

[Cal]

- Test Set Cal - Calibration - Port x-y - Port y Open

[Cal] [Cal]

- Test Set Cal - Calibration - Port x-y - Port y Short

- Test Set Cal - Calibration - Port x-y - Port y Load

[Cal]

- Test Set Cal - Calibration - Port x-y - Port x-y Thru

[Cal]

Chapter 2 27

Making Measurements

Measurement Procedures

Step 4. Executing calibration

After the measurement of the calibration standards for necessary ports is finished, calculate and save the calibration coefficients.

[Cal] - Test Set Cal - Calibration - Done

NOTE The calibration data of the 87050E and 87075C multi-port test sets has higher

priority over the analyzer’s normal calibration data. Therefore, if Test Set Cal is turned on with normal calibration data existed, the multi-port test set calibration data is used, and the normal calibration data is ignored.

28 Chapter 2

Performing Measurements

The procedure to execute measurement is described below. This section describes how to trigger actual measurement. For more information, see the E5061A/62A User’s Guide.

Step 1. Setting the trigger source

Select a trigger source. Because the trigger source is common to all the channels, you need not to set it channel by channel.

Making Measurements

Measurement Procedures

[Trigger] -

Step 2. Setting the trigger mode

Select a trigger mode. You must set it separately for each channel.

[Trigger] - Corresponding softkey

Step 3. Generating a trigger

Generate a trigger from the trigger source specified in setting the trigger source.

NOTE If the internal trigger is specified, triggers are generated continuously immediately

after the setting.

Step 4. Adjusting the settings

Adjust each setting made in “Setting the measurement conditions” according to your measurement needs.

Trigger Source - Corresponding softkey

Chapter 2 29

Making Measurements

Measurement Procedures

30 Chapter 2

3 Test Set Cal and SelfCal

Test Set Cal and SelfCal

Introduction

This chapter presents information on the following topics:

• Test Set Cal: An Overview

• Test Set Cal and SelfCal: Theory of Operation Measurement calibration is a process that improves measurement accur acy by us ing

error correction arrays to remove systematic measurement errors. By implementing the T est Set Cal and SelfCal features on your multiport system, you can increase the accuracy of your measurements and increase the throughput of your multiport measurements by eliminating frequent and lengthy calibration procedures.

Cal Type What is it? When to do it?

Test Set

Cal

SelfCal An internally automated

A full calibration of the multiport test system. Requires connections of external calibration standards.

calibration technique. Uses solid-state switches to measure calibration standards located inside the test set.

When you first set up your test system. Thereafter, about once a month if within the specified temperature range.

Set SelfCal to execute automatically as often as needed (typically once an hour).

Test Set Cal

A Test Set Cal is a calibration that should be performed when you first set up your test system and thereafter on a regular, but relatively infrequent basis. The time interval between Test Set Cals is dependent mainly on temperature. If the operating temperature of the analyzer and test set is within the specified range, the recommended time interval is about once a month. A Test Set Cal requires you to connect calibration standards to all of the ports to be used.

See “Test Set Cal: An Overview” to learn how to perform a Test Set Cal.

32 Chapter 3

Test Set Cal and SelfCal

Introduction

SelfCal

A SelfCal is an automated internal system calibration that should be performed on a regular, frequent basis. If the operating temperature of the analyzer and test set is within the specified range (refer to Chapter 8), the recommended time interval is about once an hour. A SelfCal does not require removal of the DUT or external connections of calibration standards. The SelfCal uses the results of the most recent Test Set Cal along with measurements of internal, electronically switched open, short, load, and through transfer standards to remove the drift of the network analyzer and multiport test set due to environmental variations.

See “Test Set Cal and SelfCal: Theory of Operation” for detailed information on how the Test Set Cal and SelfCal work together.

NOTE Agilent recommends that you use the Test Set Cal and SelfCal features whenever

you are using your multiport system. If you prefer, you can select from traditional analyzer calibrations, although in doing so the Test Set Cal and SelfCal features will not be available. Refer to your analyzer’s User’s Guide for information on these traditional calibrations.

Chapter 3 33

Test Set Cal and SelfCal

T est Set Cal: An Overview

Test Set Cal: An Overview

To perform a Test Set Cal the following steps are required and are explained in detail in this section:

1. Set up measurement parameters, such as frequency range, power level, number of measurements points, etc.

2. Determine the best position for the calibration reference plane.

3. Determine the type of calibration kit you will need to match the connectors at your calibration reference plane.

4. Determine the number of test set ports to be used.

5. Perform the Test Set Cal.

The following optional steps are also explained in detail in this section:

6. Save the Test Set Cal.

7. Recall the Test Set Cal.

8. Copy the Test Set Cal.

9. Execute the SelfCal.

Setting Up the Measurement Parameters

You will need to determine th e measurem ent pa r a met e rs for your Test Set Cal by determining all the measurements you will be making on a particular device and setting your parameters accordingly. The analyzer will be able to accurately interpolate between error-correction data poin ts when most param eters are changed. However, some special considerations are discussed below.

Frequency Range

You should set your freq uenc y range to the narrowest span possible that will cover all of the measurements you will be making. The analyzer uses a fixed number of frequency points during a calibration and interpolates as the frequency span is narrowed. Setting the analyzer to the narrowest span possible for your measurements will ensure the most accurate calibration. For example, if you will be measuring a device that requires three different measurements, set your start frequency to the lowest frequency used among the measurements and your stop frequency to the highest frequency used among the measurements. See Figure 3-1.

34 Chapter 3

The analyzer will interpolate between calibrated measurement points when the frequency span is narrowed. However, you should be aware that best measurement accuracy is compromised with this interpolation.

Figure 3-1 Frequency Range Example

Test Set Cal and SelfCal

T est Set Cal: An Overview

NOTE 87075C only

It is recommended that you set yo ur s t op f requ e ncy to 1 300 MH z. The per for mance of the test set is not specified above 1300 MHz.

Using this method of calibration will yield accurate measurements with optimum throughput. If your accuracy req uiremen ts are mo re imp ortant than you r th roug hp ut requirements, you may want to perform a separate Test Set Cal for each measurement setup, which eliminates the need for the analyzer to use interpolation.

Chapter 3 35

Test Set Cal and SelfCal

T est Set Cal: An Overview

Other Parameters to Consider

The following parameters, if changed after calibrating, will not invalidate the calibration, but will cause the “C?” notation to appear at the status bar of the display:

• Sweep time

• Number of points

•Power level

• IF bandwidth

The “C?” notation indicates that a measurement parameter has changed after a calibration was performed. For best accuracy, avoid measurements which cause the “C?” notation to appear.

There is a trade-off be tween selecting the parameters for best m easurement accuracy and the resulting time required for the SelfCal routine. Generally, as your parameters are modified for the greatest accuracy, the time required for a SelfCal increases. For example, selecting a large number of points and a narrow system bandwidth will improve measurement accuracy but will increase the time needed for SelfCal. Therefore, when choosing parameters, you will have to weigh the importance of measurement accuracy versus throughput.

Determining the Best Position for the Calibration Reference Plane

Most often you will not be connecting your DUT directly to the test set front panel. More likely , you will be connecting you r DUT to a test fixture or t est cables t hat are connected to the test set. See Figure 3-2 for an example. The calibration reference

plane is where you connect your calibration standards, and the measurement reference plane is where you connect your DUT. Best measurement results occur

when these reference planes are aligned so that you calibrate out the effects of the test fixture and its associated cables and hardware. Figure 3-2 illustrates how to align the reference planes by connecting y our calibration standards at the same point that you connect your DUT.

36 Chapter 3

Figure 3-2 The Calibration Reference Plane

Test Set Cal and SelfCal

T est Set Cal: An Overview

Chapter 3 37

Test Set Cal and SelfCal

T est Set Cal: An Overview

CAUTION Although the T est Set Cal can calibrate out the ef fects of you r external hardware, the

drift-removing features of the SelfCal cannot remove drift associated with any external fixtures or cabling. See Figure 3-4.

Be sure that all external fixtures and cables are extremely stable. Agilent recommends the use of semi-rigid cabling external to your multiport test set. Design fixturing such that movement of a ll cables and connectors is minimized.

Determining the Type of Calibration Kit to Use

For the most accurate calibrations and meas urements, you should select a calibration kit to match each connector of your DUT. This will en sure that no adapters are needed after a calibration has been performed. Procedures to select a calibration kit is given below. For more information on calibration kits, refer to the E5061A/E5062A User’s Guide.

Step 1. Press [Channel Next] or [Channel Prev] to select the channel for which you want

to select the calibration kit.

Step 2. Press [Cal]. Step 3. Press Step 4. Select the calibration kit you use.

NOTE Alternatively , you can also u se [Cal] - Test Set Cal - Calibration - Cal Kit to select a

Step 1. Press [Channel Next] or [Channel Prev] to select the channel for which you want

Step 2. Press [Cal]. Step 3. Press

NOTE The calibration kit definitions for Port 1 are used for the test set ports with an odd

Cal Kit.

mechanical calibration kit. Follow these steps.

to select the calibration kit.

Test Set Cal - Calibration - Cal Kit and select a calibration kit you want to use

from the softkey menu.

number, while the definitions for Port 2 are used for the ports with an even number.

38 Chapter 3

Test Set Cal and SelfCal

T est Set Cal: An Overview

Determine the Test Set Ports to Be Used

T o save time, calibrate the lowest number of ports necessary for your test setup. For example, if your test setup requires the use of only 6 of the available twelve ports, calibrate for 6 ports; there is no need to spend the time to calibrate all twelve ports.

The selection of the number of ports is necessary, in part, in order to perform the minimum-through portion of the Test Set Cal. This portion occurs during the calibration when measuring through standards for a transmis sion measurement (S or S

) or measurements using 2-port calibration. Suppose that you have a 6-port

DUT and that you have selected the ports 1 to 6 to calibrate on your test set. A traditional network analyzer calibration would require (in addition to connecting opens, shorts, and loads to all connectors) that you connect a through standard between every possible pairing of the 6 test set ports in order to measure all possible transmission paths. This would mean 15 dif ferent connect ions of thro ugh standar ds, each needing its own separate calibration file. The Test Set Cal simplifies this process by only requiring a through-standard connection between 3 adjacent port pairs of the 6 test set ports:

• Port 1 to Port 2

• Port 3 to Port 4

• Port 5 to Port 6 The analyzer calculates the remainder o f the test set port combinations and saves the

data as only one calibration file. The test set calibration can be done in any combination of the adjacent port pairs, [1, 2] and [5, 6] for example. This results in significant calibration-time savings, which improves your measurement throughput.

Performing the Test Set Cal with a Mechanical Calibration Kit

This section describes how to perform the Test Set Cal with a mechanical calibration kit.

Step 1. Press [Channel Next] or [Channel Prev] to select the channel for which you want

to execute multi-port test set calibration.

Step 2. Press [Cal].

* Adjacent ports are those which share an internal through calibration stan-

dard. Adjacent ports are: [1, 2], [3, 4], [5, 6], [7, 8], [9, 10], [11, 12].

Chapter 3 39

Test Set Cal and SelfCal

T est Set Cal: An Overview

Step 3. Press Test Set Cal. Step 4. Press

Calibration.

NOTE If Calibration is disabled, the status of the multi-port test set of thi s channel may be

off. See "Procedure of setting ports for the multi-port test set" in the previous chapter.

Step 5. Press

Port x-y (a port pair for which you want to execute calibration).

NOTE The multi-port test set calibration is perfo rmed for each port p air. If you want to use,

for example, ports 1 and 3 for measurement, calibration must be performed for 1-2 and 3-4.

Step 6. Connect the open standard to the Port x side and press

calibration data.

Step 7. Connect the short standard to the Port x side and press

calibration data.

Step 8. Connect the load standard to the Port x side and press

calibration data.

Step 9. Connect the open standard to the Port y side and press

calibration data.

40 Chapter 3

Port x Open to measure

Port x Short to measure

Port x Load to measure

Port y Open to measure

Test Set Cal and SelfCal

T est Set Cal: An Overview

Step 10. Connect the short standard to the Port y side and press Port y Short to measure

calibration data.

Step 11. Connect the load standard to the Port y side and press

Port y Load to measure

calibration data.

Step 12. Connect the thru standard between ports x and y side and press

measure calibration data.

Portx- y Thru to

Step 13. Press

Return to return to the port selection menu.

Step 14. Repeat Step 5 through Step 13 for necessary port pairs.

NOTE When you calibrate the same port pair in multiple channels, you can reduce the

number of standard connections by measuring a standard while changing measurement channels. You don’t need to complete the step 5 through 13 before you perform calibration in other channel, thus you can measure standards for Test Set Cal in parallel in multiple channels.

Step 15. Press

Done to finish the calibration of the multi-port test set. The calibration

coefficients are calculated and saved by this operation.

Chapter 3 41

Test Set Cal and SelfCal

T est Set Cal: An Overview

Calibrating: Insertable Port Pairs versus Noninsertable Port Pairs

During the through portion of the calibration, if an adjacent port pair (for example, 1-to-2, 3-to-4, 5-to-6, etc.) can be connected directly without using a cable or an adapter, the port pair is insertable. If an adjacent port pair can only be connected by using a through cable or an adapter, the port pair is noninsertable. If the port pair is noninsertable, the through cable or adapter is not used when the DUT is measured, so its electrical delay must be subtracted out. This is done by modifying the definition of the through-standard in the calibration kit for each port.

Most test fixtures have fixed-location connectors, so their port pairs can only be connected by using a through cable. During the calibration you will be prompted to connect a through cable between specific port pairs. If you can connect your cables to the test set so that the cables’ adjacent port pairs are male-to-female, all of your port pairs will be insertable. Configuring your test setup this way saves calibration time and improves your measurement throughput.

Performing the Test Set Cal with an ECal Module

This section describes how to perform the Test Set Cal with an ECal module.

Step 1. Press [Channel Next] or [Channel Prev] to select the channel for which you want

to execute multi-port test set calibration.

Step 2. Press [Cal]. Step 3. Press Step 4. Press

NOTE If Calibration is disabled, the status of the multi-port test set of thi s channel may be

Step 5. Press

NOTE The multi-port test set calibration is perfo rmed for each port p air. If you want to use,

Te st Set Cal . Calibration.

off. See "Procedure of setting ports for the multi-port test set" in the previous section.

Port x-y (a port pair for which you want to execute calibration).

for example, ports 1 and 3 for measurement, calibratio n must be perfo rmed for p orts 1-2 and 3-4.

42 Chapter 3

Test Set Cal and SelfCal

T est Set Cal: An Overview

Step 6. Connect the ECal module between ports x and y and press ECal to measure

calibration data and calculate the calibration coefficients.

Step 7. Repeat Step 5 and Step 6 for necessary port pairs.

Chapter 3 43

Test Set Cal and SelfCal

T est Set Cal: An Overview

NOTE A 2-port type ECal module is assumed in the above procedure. For a 4-port ECal

module, in case of S-parameter test set, you can connect any two of the 4 ports when connecting the ECal module in St ep 6. In case of transmission /reflection test set, on e of the connections listed in the table must be used.

4-Port ECal connection to T/R test set

Reflection Transmission

Port A Port B Port B Port C Port C Port D Port D Port A

Saving the Test Set Cal

It is a good idea to manually save the results of your Test Set Cal. You can save the test set cal data as a part of the instrument state. Following is a basic procedure to save the instrument state into the pre-defined register. See your analyzer’s User’s Guide for more detailed information on saving, and recalling files.

Step 1. Press [Channel Next] or [Channel Prev] to select the channel for which you want

to save calibration data.

Step 2. Press [Save/Recall]. Step 3. Press

Step 4. Press

Save Type, then either State & Cal or All so that the calibration data is included in

the state data.

Save State, then the softkey corresponding to the register in which you want to

save the instrument state.

Recalling the Test Set Cal

You can recall the test set cal data as a part of the instrument state. Following is a basic procedure to recall the instrument state from th e pre-defined register. See yo ur analyzer’s User’s Guide for more detailed information on s avi ng, and recal l ing files.

Step 1. Press [Channel Next] or [Channel Prev ] to se lect the channel for whic h you want

to recall calibration data.

44 Chapter 3

Step 2. Press [Save/Recall].

Test Set Cal and SelfCal

T est Set Cal: An Overview

Step 3. Press

Recall State, then the softkey corresp onding to the r egister from which you w ant

to recall the instrument state.

Copying the Test Set Cal.

The E5061A/62A lets you temporarily save Test Set calibration data only for each channel and copy it to another channel. When the same calibration data is used in multiple channels, you can reduce calibration time by using this method instead of doing the same calibration multiple times. The procedure is as follows:

Step 1. Press [Channel Next] or [Channel Prev] to select the channel for which you want

to save calibration data temporarily.

Step 2. Press [Save/Recall]. Step 3. Press Step 4. Press one of

NOTE An area with an asterisk (*) to the right of Cal Only x contains saved data alread y. If

Step 5. Press [Channel Next] or [Chann el Prev] to select a channel to which you want to

Save Channel.

Cal Only A through Cal Only D.

you press the key, the previous calibration data is deleted and new calibration data is written over it. In this case, the previous calibration data cannot be restored.

copy calibration data.

Step 6. Press [Save/Recall]. Step 7. Press Step 8. Press

NOTE Only keys for which saved data exists are active.

Recall Channel.

Cal Only x in which you have saved calibration data to read it out.

Executing Self Cal

The SelfCal timer feature allows you to set up your multiport system to automatically perform a SelfCal at a user-defined interval. The default interval is 60 minutes. Your environmental conditions and accuracy requirements may dictate either a shorter interval or allow a longer interval.

Chapter 3 45

Test Set Cal and SelfCal

T est Set Cal: An Overview

NOTE Self Cal is set for each measurement channel and executed for a port pair selected

for the channel.

NOTE SelfCals are not automatically initiated on currently unused ports. A port is never

automatically calibrated unless it is selected— even if the time interval has been exceeded.

NOTE SelfCals are initiated only when a trigger source is internal and a trigger mode is

continuous.

Step 1. Press [Cal]. Step 2. Press Step 3. Press

Te st Set Cal . Timer and enter the interval for executing Self Cal in minutes in the entry area

in the upper part of the screen.

Step 4. Press

Self Cal to make the auto Self Cal status on.

NOTE You can execute a Self Cal on the currently selected channel by press ing [Cal] - Test

Set Cal - Self CalOnce.

46 Chapter 3

Test Set Cal and SelfCal

Test Set Cal and SelfCal: Theory of Operation

Adding a multiport test set to the analyzer degrades raw performance of the test system as well as introduces drift. Test Set Cal provides the vector error correction that allows the system to achieve good performance. A Test Set Cal is a calibration that is performed on a regular, but infrequent basis. The results of the Test Set Cal are used by the SelfCal feature to remove the drift associated with the hardware of the test set and analyzer to return the multiport system to an accurately calibrated state.

There are two steps to the Test Set Cal:

• The first step requires you to connect calibration standards (from a calibration kit) and your own through-cables to the calibration reference plane. The analyzer measures the known reference standards and uses those measurements to compute error correction coefficients.

• The second step occurs once you are done measuring the calibration standards and store the Test Set Cal data. The multiport test set contains electronically switched open, short, load, and through standards behind each port. (See Figure

3-3. This illustration depicts a two-port test set. The same inter nal standards are

also included behind every port of your test set.) These standards are very stable, yet their calibration definitions are not known like the mechanical standards. During this second step, the analyzer makes a measurement of each internal standard and then, using the error coefficients that were computed from the measurements of the external standards, derives a very accurate calibration definition for each internal standard. Once this has been done, the internal standards act as “transfer standards” for future automatic calibrations called SelfCals.

Chapter 3 47

Test Set Cal and SelfCal

Test Set Cal and SelfCal: Theory of Operation

Figure 3-3 Internal Transfer Standards

A SelfCal is an automatic measurement of the test set internal standards that allows the system to remove system drift that occurs due to environmental changes such as temperature. SelfCal allows the multiport system to recalibrate itself without having to disconnect the DUT or connect any additional external standards or cables to the system.

A SelfCal can be initiated manually. It is also possible to automatically perform a SelfCal at regular, frequent time intervals. If the operating temperature of the analyzer and test set is within the specified range (refer to Chapter 8), the recommended time interval is about once an hour.

CAUTION Performing a Test Set Cal will effectively calibrate out the initial effects of any

external cabling and/or test fixtures. However, it must be not e d that alth oug h the SelfCal can remove drift internal to the measurement system, it cannot remove any drift associated with cables, test fixtures and connections beyond the internal transfer standards.

As shown in Figure 3-4, the Test Set Cal initially removes the effects of drift associated with hardware in the area designated by arrow “A.” SelfCal can only remove the effects of drift from the area designated by arrow “B.”

48 Chapter 3

Test Set Cal and SelfCal: Theory of Operation

Drift can be minimized by controlling the environmental temperature and humidity, and by using high quality connectors, semi-rigid cables, and fixturing that reduces cable movement to a minimum.

Figure 3-4 Drift Removal: Test Set Cal and SelfCal

Test Set Cal and SelfCal

Chapter 3 49

Test Set Cal and SelfCal

Test Set Cal and SelfCal: Theory of Operation

50 Chapter 3

4 Front/Rear Panel

Front/Rear Panel

This chapter contains information on the ports and switches found on the front and rear panels of the test set.

52 Chapter 4

Front Panel

Figure 4-1 Front Panel Features

Front/Rear Panel

Front Panel

Item Description

1 Line Power Switch 2 Port Connection Status LEDs 3 Reflection and Transmission Connectors 4Test Ports 5 Chassis Ground Connector

Line Power Switch

The test set line POWER switch is located at the bottom left corner of the front panel. See Figure 4-1. The line POWER switch turns the power to the test set to either on or off.

Chapter 4 53

Front/Rear Panel

Front Panel

The front panel LINE switch disconnects the mains circuits from the mains supply after the EMC filters and before others parts of the instrument.

Test Ports

The front panel test ports are f emale connect ors (50 oh m for the 87050 E; 75 ohm for the 87075C) that are used to connect to the device under test.

CAUTION 87050E multiport test set only:

Connecting 75 ohm cables to the front panel 50 ohm connectors of the analyzer or test set usually results in intermittent or no electrical connections.

CAUTION 87075C multiport test set only:

Never connect 50 ohm cables to the front panel 75 ohm connectors of the analyzer or test set. Otherwise, irreparable connector damage will occur.

54 Chapter 4

Front/Rear Panel

Front Panel

The REFLECTION Connector

The REFLECTION connector is a female type-N connector (50 ohm for the 87050E; 75 ohm for the 87075C) that connects directly to the PORT 1 of the network analyzer using a semi-rigid cable that was shipped with your test set.

CAUTION Check your analyzer's documentation for damag e limits to the analyzer ports. Make

sure that your test setup will not cause those limits to be exceeded.

The TRANSMISSION Connector

The TRANSMISSION connector is a female, type-N connector (50 ohm for the 87050E; 75 ohm for the 87075C) that connects directly to the PORT 2 of the network analyzer using a semi-rigid cable that was shipped with your test set.

CAUTION Check your analyzer's documentation for damag e limits to the analyzer ports. Make

sure that your test setup will not cause those limits to be exceeded.

The Chassis Ground Connector

The chassis ground connector provides a convenient front panel ground connection for a standard banana plug.

The PORT CONNECTION Status LEDs

The PORT CONNECTION status LEDs provide visual feedback of which test set port(s) are connected to the REFLECTION and TRANSMISSION connectors of the test set. When neither LED is lit for a particular test set port, the test set port is terminated with the internal load.

Chapter 4 55

Front/Rear Panel

Rear Panel

Figure 4-2 Rear Panel Features

Item Description

1 Parallel In Connector 2 Parallel Out Connector 3Line Module

The PARALLEL IN Connector

This female DB-25 connector input is always connected to the network analyzer. The analyzer provides control of the test set through this cable as well as passing through any printer control signals to the test set’s PARALLEL OUT connector.

The PARALLEL OUT Connector

This rear panel connector cannot be used when the test set is used with the E5061A/E5062A. Use the analyzer’s USB ports when using a printer.

56 Chapter 4

Front/Rear Panel

Rear Panel

Line Module

The line module contains the power cable recep tacle. See “Step 4. Satisfy Electrical and Environmental Requirements” for power supply requirements.

Power Cables The line power cable is supplied in one of several configurations, depending on the

destination of the original shipment. Each instrument is equipped with a three-wire power cable. When connected to an

appropriate ac power receptacle, this cable grounds the inst rument chas sis. The type of power cable shipped with each instrument depends on the country of destination. See Figure 4-3 for the part numbers of these power cables. Cables are available in different lengths. Check with your nearest Agilent service center for descriptions and part numbers of cables other than those described in Figure 4-3.

WARNING This is a Safety Class I product (provided with a protective earthing ground

Chapter 4 57

Front/Rear Panel

Rear Panel

Figure 4-3 Power Cable and Line (Mains) Plug Part Numbers

58 Chapter 4

5Key Reference

Key Reference

This chapter contains an alphabetical reference of the networ k analyzer keys that are used exclusively for the multiport test set. It also contains entries for some of the network analyzer keys that are likely to be used while making measurements with your multiport test set. For a complet e referen ce of net wor k anal yzer keys , see yo ur analyzer’s User’s Guide.

60 Chapter 5

Cal Menu

Key stroke Function SCPI comma nd

[Cal] Displays the softkeys related to setting and executing calibration.

Key Reference

Cal Menu

Correction Toggles on/off the error correction.

:SENS{1-4}:CORR:STAT

Test Set Cal Displays the softkeys to execute multi-port test set calibration.

Te st Set Cal Enables/disables the calibration data for the multi-port

:SENS{1-4}:CORR:MULT

test set.

Calibration Displays the softkeys to select ports for which you want to perform the calibration of

the multi-port test set or select a calibration method.

Port 1-2

Port1 Open Executes open calibration for port 1 of the multi-port

Port1 Short Executes short calibration for port 1 of the multi-port

Port1 Load Executes load calibration for port 1 of the multi-port test

Port2 Open Executes open calibration for port 2 of the multi-port

Port2 Short Executes short calibration for port 2 of the multi-port

Port2 Load Executes load calibration for port 2 of the multi-port test

Displays the softkeys to calibrate ports 1 and 2 of the multi-port test set.

:SENS{1-4}:CORR:MULT:C

test set.

set.

test set.

set.

OLL:OPEN 1

:SENS{1-4}:CORR:MULT:C OLL:SHOR 1

:SENS{1-4}:CORR:MULT:C OLL:LOAD 1

:SENS{1-4}:CORR:MULT:C OLL:OPEN 2

:SENS{1-4}:CORR:MULT:C OLL:SHOR 2

:SENS{1-4}:CORR:MULT:C OLL:LOAD 2

Port1-2 Thru Executes thru calibration for ports 1 and 2 of the

multi-port test set.

Port1-2 Isol (Optional)

Executes isolation calibrat ion for ports 1 and 2 of the multi-port test set.

Chapter 5 61

:SENS{1-4}:CORR:MULT:C OLL:THRU 2,1

:SENS{1-4}:CORR:MULT:C OLL:ISOL 2,1

Key Reference

Cal Menu

Key stroke Function SCPI comma nd

[Cal]

(Continued)

Test Set Cal

Calibration

Port 1-2

ECal Executes 2-port ECal for ports 1 and 2 of the mu lti- po rt

test set.

:SENS{1-4}:CORR:MULT:C OLL:ECAL 2,1

Return Returns to the softkey display in one level upper.

Port 3-4 Displays the softkeys to calibrate ports 3 and 4 of the multi-port test set. The lower

level softkeys displayed are the same as those for Port 1-2

Port 11-12 Displays the softkeys to calibrate ports 11 and 12 of the multi-port test set. The lower

level softkeys displayed are the same as those for Port 1-2.

Cal Type Selects a calibration method for calibrating each port of

the multi-port test set.

Cal Kit

Displays the softkeys to select a calibration kit to calibrate the multi-port test set. The

:SENS{1-4}:CORR:MULT:C OLL:METH

softkey labels for the calibration kit differ depending on the registered data.

85033E Selects the 85033E calibration kit.

:SENS{1-4}:CORR:COLL:C KIT 1

: :

User Selects a calibration kit newly registered.

Cancel Returns to the softkey display in one level upper.

Done Finishes the calibratio n and calculates the calibration

coefficients.

Return Returns to the softkey display in one level upper.

Self Cal Toggles on/off the auto calibration feature using the

internal standard of the multi-port test set.

62 Chapter 5

:SENS{1-4}:CORR:COLL:C KIT 10

:SENS{1-4}:CORR:MULT:C OLL:SAVE

:SENS{1-4}:CORR:MULT:SE LF

Key Reference

Cal Menu

Key stroke Function SCPI comma nd

[Cal]

(Continued)

Test Set Cal

Timer Specifies the execution interval of the auto calibration

feature using the internal standard of the multi-port test set. You can specify 1 or more in minutes.

Self Cal Once Executes the auto calibration feature using the internal

standard for the specified port of the multi-port test set.

Return Returns to the softkey display in one level uppe r.

Return Returns to the softkey display in one level upper .

:SENS{1-4}:CORR:MULT:SE LF:TIM

:SENS{1-4}:CORR:MULT:SE LF:ONCE

Chapter 5 63

Key Reference

System Menu

Key stroke Function SCPI comma nd

[System]

87050/75 Set up Displays the softkeys related to setting the multi-port test set.

87050/75 Control Enables/disables the multi-port test set. Reflection Displays the softkeys to select the port for the reflection side of the multi-port test set.

Port 1 Select s Port 1 as the reflection-side port.

Port 12 Selects Port 12 as the reflection-side port.

Cancel Aborts the selection and returns to the softkey display in one level upper.

Transmission Displays the softkeys to select the port for the transmission side of the multi-port test

Port 1 Select s Port 1 as the transmission-side port.

Port 12 Selects Port 12 as the transmission-side port.

Cancel Aborts the selection and returns to the softkey display in one level upper.

Displays the softkeys related to co ntrol/management features of the analyzer.

:SENS{1-4}:MULT

:SENS{1-4}:MULT:PORT1:S EL 1

:SENS{1-4}:MULT:PORT1:S EL 12

set.

:SENS{1-4}:MULT:PORT2:S EL 1

:SENS{1-4}:MULT:PORT2:S EL 12

Property T o ggles on/of f the c onnection status (propertie s) display

of the multi-port test set.

:SENS{1-4}:MULT:PROP

.. .. ..

64 Chapter 5

Key Reference

System Menu

Key stroke Function SCPI comma nd

[System]

87050/75 Set up

Return Returns to the softkey display in one level uppe r.

Return Returns to the softkey display in one level upper .

(Continued)

Chapter 5 65

Key Reference

System Menu

66 Chapter 5

6 SCPI Command Reference

This chapter describes the SCPI command reference for the Agilent E5061A/E5062A to con tr ol the Agilent 87075C Multi Port Test Set. It describes the commands using their abbreviated format in alphabetical order.

SCPI Command Reference

Syntax

Notational conventions in this command reference

This section describes the rules to read the description of the commands in this chapter.

Syntax

Part with heading "Syntax" describes the syntax to send a command from the external controller to the E5061A/E5062A. A syntax consists of a command part and a parameter part. The separator between the command part and the parameter part is a space.

If there are several parameters, the separator between adjacent parameters is a comma (,). 3 points (…) between commas indicate that parameters in that part are omitted. For example, <value 1>,…,<value 4> indicates that 4 parameters, <value 1>,<value 2>,<value 3>,<value 4>, are required. String-type parameters, <string>, <string 1>, and so on, must be enclosed in double quotation marks (").

You can omit the lowercase letters in syntax. For example, ":CALibration:CABLe" can be shortened as ":CAL:CABL.

The definition of symbols used in the syntax is as follows: <> Characters enclosed in this pair of symbols are necessary

parameter s when sending the command. [] Part enclosed in this parenthesis pair can be omitted. {} Part enclosed in this parenthesis pair indicates that you must

select one of the items in this part. Individual items are

separated by a vertical bar (|). For example, ":CALC:CORR:EDEL:TIME 0.1,"

":CALCULATE1:SELECTED:CORR:EDEL:TIME 25E-3," and so on are valid for the syntax given below.

Syntax :CALCulate{[1]|2|3|4|5|6}[:SELected]:CORRection:EDELay:TIME <value>

Description

Part with heading "Description" descri bes how to us e the command or the operat ion when executed.

68 Chapter 6

SCPI Command Reference

Query response

Parameters

Part with heading "Parameters" describes necessary parameters when sending the command. When a parameter is a value type or a string type enclosed with <>, its description, allowable setup range, preset (factory-set) value, and so on are given; when a parameter is a selection type enclosed with { }, the description of each selection item is given.

For a value-type parameter noted with "MAX or MIN is available," you can use MAX (or MAXIMUM) and MIN (or MINIMUM) as its parameter instead of a value, which specifies the maximum value and minimum value within the allowable setup range, respectively.

Query response

Part with heading "Query response" describes the data format read out when query (reading out data) is available with the command.

Each readout parameter is enclosed with {}. If there are several items within {} separated by the pipe (|), only one of them is read out.

When several parameters are read out, they are separated with a comma (,). Note that, 3 points (…) between commas indicate that the data of that part is omitted. For example, {numeric 1},…, {numeric 4} indicates that 4 data items, {numeric 1}, {numeric 2}, {numeric 3}, and {numeric 4}, are read out.

<newline><^END> after the parameters is the program message terminator.

Related commands

Part with heading "Related commands" describes the commands related to this command.

Equivalent key

Part with heading "Equivalent key" shows the operational procedure of the front panel keys that has the same effect as this comm and.

[Key] Indicates that you press the key named Key. [Key] - Item Indicates a series of key operation in which you press the [Key]

key, select (highlight) the item called Item on the displayed

Chapter 6 69

SCPI Command Reference

Equivalent key

menu using t he [←↓] key and so on, and then press the [Enter]

key.

70 Chapter 6

SCPI Command Reference

:SENS{1-4}:CORR:MULT

Multiport Testset Commands

This section describes the commands of the 87050E and 87075C Multiport Test Sets.

:SENS{1-4}:CORR:MULT

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport[:STATe] {ON|OFF|1|0}

:SENSe{[1]|2|3|4}:CORRection:MULTiport[:STATe]?

Description For channel 1 to channel 4, enables/disables the calibration of the test set.

Parameters

Description

ON or 1 Enables the calibration of the test set. OFF or 0 (preset value) Disables the calibration of the test set.

Query response {1|0}<newline><^END>

Example of use

Related commands

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT ON" 20 OUTPUT 717;":SE NS1:CORR:MULT?" 30 ENTER 717;A$

[Cal] - Test Set Cal - Test Set Cal

Chapter 6 71

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:ECAL

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:COLLect:ECAL <value 1>,<value 2>

Description For channel 1 to channel 4, performs the calibration of the specified ports using

ECal. This command makes a measurement of the standard and calculates calibration coefficient successively. The calibration executed here is the test set calibration specified by :SENS{1-4}:CORR:MULT:COLL:METH on page 75.

NOTE If 2 ports you specify are not a port pair, an error occurs. Also, if

:SENS{1-4}:MULT on page 83 is off, an error occurs.

Parameters

Description

value 1 Specifies a port of the test set port pair to be calibrated. value 2 Specifies the other port of the test set port pair to be

calibrated.

Query response No query

Example of use

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT:COLL:ECAL 1,2"

:SENS{1-4}:CORR:MULT:COLL:METH on page 75

[Cal] - Test Set Cal - Calibration - Port x-y - Ecal

72 Chapter 6

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:ISOL

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:COLLect[:ACQuire]:ISOLation <value 1>,<value 2>

Description For channel 1 to channel 4, measures isolation calibration data for the specified port

pair.

NOTE If 2 ports you specify are not a port pair, an error occurs. Also, if

:SENS{1-4}:MULT on page 83 is off, an error occur.

Parameters

Description

value 1 Specifies a port of the test set port pair for which isolation

calibration data is measured.

value 2 Specifies the other port of the test set port pair for which

isolation calibration data is measured.

Query response No query

Example of use

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SE NS1:CORR:MULT:COLL:ISOL 1,2"

:SENS{1-4}:CORR:MULT:COLL:OPEN on page 76 :SENS{1-4}:CORR:MULT:COLL:SHOR on page 78 :SENS{1-4}:CORR:MULT:COLL:LOAD on page 74 :SENS{1-4}:CORR:MULT:COLL:THRU on page 79

[Cal] - Test Set Cal - Calibration - Port x-y - Port x-y Isol (Optional)

Chapter 6 73

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:LOAD

Syntax :SENSe{[1]|2|3| 4}:CORRection:MULTiport:COLLect[:ACQuire]:LOAD <value>

Description For channel 1 to channel 4, measures the calibration data of the load standard of the

specified port.

NOTE If :SENS{1-4}:MULT on page 83 i s off, an error occur.

Parameters

Description

value Specifies a port of the test set for which the calibration data

of the load standard is measured.

Query response No query

Example of use

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT:COLL:LOAD 1"

:SENS{1-4}:CORR:MULT:COLL:OPEN on page 76 :SENS{1-4}:CORR:MULT:COLL:SHOR on page 78 :SENS{1-4}:CORR:MULT:COLL:THRU on page 79 :SENS{1-4}:CORR:MULT:COLL:ISOL on page 73

[Cal] - Test Set Cal - Calibration - Port x-y - Port x Load (or Port y Load)

74 Chapter 6

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:METH

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:COLLect:METHod {ERES|SOLT2}

:SENSe{[1]|2|3|4}:CORRection:MULTiport:COLLect:METHod?

Description For channel 1 to channel 4, selects the test set calibration from enhanced response

calibration or full 2-port calibration.

NOTE Only ERES (enhanced response calibration) can be specified for the T/R model.

Parameters

Description

ERES Specifies the enhanced response calibration for the test set

calibration.

SOLT2 Specifies the full 2-port calibration for the test set

calibration.

Example of use

10 OUTPUT 717;":SE NS1:CORR:MULT:COLL:METH SOLT2" 20 OUTPUT 717;":SE NS1:CORR:MULT:COLL:METH?" 30 ENTER 717;A$

Related commands :SENS{1-4}:CORR:MULT on page 71

Equivalent key

[Cal] - Test Set Cal - Calibration - Cal Type

Chapter 6 75

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:OPEN

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:C OL L ect[:AC Quir e ]:OP EN <value >

Description For channel 1 to chan nel 4, measures the calibration data of the o pen standard o f the

specified port.

NOTE If :SENS{1-4}:MULT on page 83 i s off, an error occur.

Parameters

Description

value Specifies a port of the test set for which the calibration data

of the open standard is measured.

Query response No query

Example of use

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SE NS1:CORR:MULT:COLL:OPEN 1"

:SENS{1-4}:CORR:MULT:COLL:SHOR on page 78 :SENS{1-4}:CORR:MULT:COLL:LOAD on page 74 :SENS{1-4}:CORR:MULT:COLL:THRU on page 79 :SENS{1-4}:CORR:MULT:COLL:ISOL on page 73

[Cal] - Test Set Cal - Calibration - Port x-y - Port x Open (or Port y Open)

76 Chapter 6

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:SAVE

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:COLLect:SAVE

Description For channel 1 to channel 4, calculates the calibration coefficients depending on the

selected calibration type. Calibration coefficient is calculated for all port pairs that have all necessary measured calibration data for calculation. If none of the port pair has all necessary data for calculation, an error occurs and the command is ignored. The command clears all measured calibration data of the channel. (No query)

NOTE The same calibration method must be used for all port pairs to be used in a channel.

Therefore, if calibration is executed after changing the calibration method by :SENS{1-4}:CORR:MULT:COLL:METH on page 75, all the calibration coefficient for the different calibration method will be discarded.

Query response No query

Example of use Related commands :SENS{1-4}:CORR:MULT:COLL:METH on page 75

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT:CO LL:SAVE"

[Cal] - Test Set Cal - Calibration - Done

Chapter 6 77

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:SHOR

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:COLLect[:ACQuire]:SHORt <value>

Description F or chan nel 1 to channel 4, measur es the calibrati on data of th e shor t stand ard of the

specified port.

NOTE If :SENS{1-4}:MULT on page 83 i s off, an error occur.

Parameters

Description

value Specifies a port of the test set for which the calibration data

of the short standard is measured.

Query response No query

Example of use

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT:CO LL:SHOR 1"

:SENS{1-4}:CORR:MULT:COLL:OPEN on page 76 :SENS{1-4}:CORR:MULT:COLL:LOAD on page 74 :SENS{1-4}:CORR:MULT:COLL:THRU on page 79 :SENS{1-4}:CORR:MULT:COLL:ISOL on page 73

[Cal] - Test Set Cal - Calibration - Port x-y - Port x Short (or Port y Short)

78 Chapter 6

SCPI Command Reference

:SENS{1-4}:CORR:MULT:COLL:THRU

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:COL Lect[:ACQuire]:THRU <value 1>,<value 2>

Description For channel 1 to channel 4, measures thru standard calibration data for the specified

port pair.

NOTE If 2 ports you specify are not pair p orts, an error occurs. Also, if :SENS{1-4}:MULT

on page 83 is off, an error occur.

Parameters

Description

value 1 Specifies a port of the test set port pair for which thru

standard calibration data is measured.

value 2 Specifies the other port of the test set port pair for which

thru standard calibration data is measured.

Query response No query

Example of use

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT:CO LL:THRU 1,2"

:SENS{1-4}:CORR:MULT:COLL:OPEN on page 76 :SENS{1-4}:CORR:MULT:COLL:SHOR on page 78 :SENS{1-4}:CORR:MULT:COLL:LOAD on page 74 :SENS{1-4}:CORR:MULT:COLL:ISOL on page 73

[Cal] - Test Set Cal - Calibration - Port x-y - Port x-y Thru

Chapter 6 79

SCPI Command Reference

:SENS{1-4}:CORR:MULT:SELF

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:SELF[:STATe] {ON|OFF|1|0}

:SENSe{[1]|2|3|4}:CORRection:MULTiport:SELF[:STATe]?

Description For channel 1 to channel 4, specifies whether to execute the self calibration of the

test set automatically at user defined interval. To specify the interval, use the

:SENS{1-4}:CORR:MULT:SELF:TIM on page 82 command. Note that, if :SENS{1-4}:MULT on page 83 is off, self calibration is not executed automatically

even if it is turned on with this command.

Parameters

Description

ON or 1 Executes self calibration for the test set at user defined

interval.

OFF or 0 (preset value) Does not execute self calibration for the test set at user

defined intervals.

Query response {1|0}<newline><^END>

Example of use

10 OUTPUT 717;":SE NS1:CORR:MULT:SELF ON" 20 OUTPUT 717;":SE NS1:CORR:MULT:SELF?" 30 ENTER 717;A

Related commands :SENS{1-4}:MULT on page 83

:SENS{1-4}:CORR:MULT:SELF:TIM on page 82

Equivalent key

[Cal] - Test Set Cal - Self Cal

80 Chapter 6

SCPI Command Reference

:SENS{1-4}:CORR:MULT:SELF:ONCE

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:SELF:ONCE

Description For channel 1 to channel 4, executes self calibration for the port pairs that are used

in the channel with the Test Set calibration.

NOTE If necessary test set calibration has not been executed, this command causes an

error. Also, if :SENS{1-4}:MULT on page 83 is off, this command causes an error.

Query response No query

Example of use Related commands :SENS{1-4}:MULT on page 83

Equivalent key

10 OUTPUT 717;":SENS1:CORR:MULT:SELF:ONCE"

:SENS{1-4}:MULT:PORT{1-2}:SEL on page 84 :SENS{1-4}:CORR:MULT:SELF on page 80

[Cal] - Test Set Cal - Self Cal Once

Chapter 6 81

SCPI Command Reference

:SENS{1-4}:CORR:MULT:SELF:TIM

Syntax :SENSe{[1]|2|3|4}:CORRection:MULTiport:SELF:TIMer <value>

:SENSe{[1]|2|3|4}:CORRection:MULTiport:SELF:TIMer?

Description For channel 1 to channel 4, specifies the interval at which the self calibration of the

test set is executed automatically. If :SENS{1-4}:CORR:MULT:SELF on page 80 is on, self calibration is executed at intervals specified by this command.

Parameters

<value>

Description Interval for auto run of self calibration. Range 1 to 43200 Preset value 60 Unit Minute

Query response <value><newline><^END>

Example of use

10 OUTPUT 717;":SENS1:CORR:MULT:SELF:TIM 30" 20 OUTPUT 717;":SENS1:CORR:MULT:SELF:TIM?" 30 ENTER 717;A

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

:SENS{1-4}:CORR:MULT:SELF on page 80

[Cal] - Test Set Cal - Timer

82 Chapter 6

:SENS{1-4}:MULT

SCPI Command Reference

:SENS{1-4}:MULT

Syntax :SENSe{[1]|2|3|4}:MULTiport[:STATe] {ON|OFF|1|0}

:SENSe{[1]|2|3|4}:MULTiport[:STATe]?

Description For channel 1 to channel 4, enables/disables the test set. If off is specified, test set

calibration cannot be executed.

Parameters

Description

ON or 1 Enables the test set. OFF or 0 (preset value) Disables the test set.

Query response {1|0}<newline><^END>

Example of use

10 OUTPUT 717;":SE NS1:MULT ON" 20 OUTPUT 717;":SENS1:MULT?" 30 ENTER 717;A$

Related commands :SENS{1-4}:CORR:MULT:COLL:METH on page 75

Equivalent key

[System] - 87050/75 Set up - 87050/75 Cont rol

Chapter 6 83

SCPI Command Reference

:SENS{1-4}:MULT:PORT{1-2}:SEL

Syntax :SENSe{[1]|2|3|4}:MULTiport:PORT{[1]|2}:SELect <value>

:SENSe{[1]|2|3|4}:MULTiport:PORT{[1]|2}:SELect?

Description For channel 1 to channel 4, specifies port s to which the reflecti on port (port 1) of the

test set and the transmission port (port 2) are connected. The same port cannot be specified as a port to which port 1 and port 2 are connected.

Parameters

<value>

Description Port numbers to which port 1 and port 2 of the test set are

connected. Range 1 to 12 Preset value Reflection port: 1 Transmission port: 2

Query response <value><newline><^END>

Example of use

10 OUTPUT 717;":SENS1:MULT:PORT1:SEL 3" 20 OUTPUT 717;":SENS1:MULT:POR T1:SEL?" 30 ENTER 717;A

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

:SENS{1-4}:MULT:PROP on page 85

[System] - 87050/75 Setup - Reflection - Port x (x= from 1 to 12) [System] - 87050/75 Setup - Transmission - Port y (y= from 1 to 12)

84 Chapter 6

:SENS{1-4}:MULT:PROP

SCPI Command Reference

:SENS{1-4}:MULT:PROP

Syntax :SENSe{[1]|2|3|4}:MULTiport:PROPerty {ON|OFF|1|0}

:SENSe{[1]|2|3|4}:MULTiport:PROPerty?

Description For channel 1 to channel 4, specifies whether to display the port connection status of

the test set.

Parameters

Description

ON or 1 Shows the port connection status of the test set. OFF or 0 (preset value) Hides the port connection status of the test set.

Query response {1|0}<newline><^END>

Example of use

10 OUTPUT 717;":SENS1:MULT:PROP ON" 20 OUTPUT 717;":SENS1:MULT:PROP?" 30 ENTER 717;A$

Related commands :SENS{1-4}:MULT on page 83

Equivalent key

[System] - 87050/75 Set up - Property

Chapter 6 85

SCPI Command Reference

:SENS{1-4}:MULT:PROP

86 Chapter 6

7 COM Object Reference

This chapter describes the COM object model of the Agilent E5061A/E5062A and the COM object reference provided for the Agilent 87075C Multiport Test Set control in alphabetical order.

COM Object Reference

Application Objects

COM Object Model

The COM objects provided for the E5061A/E5062 A are structured hierarch ically as shown in Figure 7-1.

Figure 7-1 E5061A/E5062A COM object model

Application Objects

The Application objects are at the top of the hierarchy of t he E5061A/E5062A COM object model. They consist of 7 objects dedicated to the COM interface and SCPI objects corresponding to SCPI commands. For information on the basic use of the 7 objects dedicated to the COM interface, see “Application Objects” on page 88.

88 Chapter 7

COM Object Reference

SCPI Objects

The SCPI objects are created to realize the SCPI commands o f the E5061 A/E5062A with the COM interface. For information on the basic use of the SCPI objects, see “SCPI Objects” on page 89.

The conversion rules from the SCPI commands when writing SCPI object messages are as follows:

• SCPI. must be at the beginning. Notice that the IEEE common commands start with SCPI.IEEE4882. and "*" is omitted.

• Replace colons (:) used as the hierarchical separator symbol with dots (.).

• The number written in the object message is specified with ( ).

• You cannot omit the command message in the syntax.

SCPI command COM object

OUTPUT 717;":SOUR1:POW -10" → SCP I.SOURce(1).POWer.LEVel.IMMediate.AMPLitude = -10

OUTPUT 717;":SENS1:CORR:COLL:METH:TYPE?" ENTER 717;A$

OUTPUT 717;"*CLS" → SCPI.IEEE4882.CLS

→ A = SCPI.SENSe(1).CORRection.COLLect.METHod:TYPE

Chapter 7 89

COM Object Reference

Object Type

Notational Rules of COM Objects

This section describes the rules for the description of the COM objects in this chapter.

Object Type

Part with heading “Object type” describes the type of the E5061A/E5062A COM object. The E5061A/E5062A pr ovi d es properties and methods as the types of COM objects. In the E5061A/E5062A COM objects, COM objects to set (send)/read (return) the state of the E5061A/E5 062A using vari ables are defin ed as propert y and ones to prompt some kind of processing as method.

Syntax

Part with heading “Syntax” describes the syntax to send a COM object from the E5061A/E5062A VBA to the E5061A/E5062A. The syntax consists of the object part and the set/read part, with an equal “=” inserted between them. Variables are indicated by italicized letters. Variables with () are indices. For indices with () having their preset values, you can omit “(variable),” and, if omitted, the preset values are automatically set.

There are the following 3 types of syntax for coding using objects. "Object (property) = variable": to set the stat of the E5061A/E5062A. variable=object (property): to read the stat of the E5061A/E5062A. "Object (method)": to make the E5061A/E5062A perform some processing.

Description

Part with heading “Description” describes how to use the COM object or the operation when executed. COM objects used only to read the state of the E5061A/E5062A are indicated with “Read only” and ones used only to set the state of the E5061A/E5062A “No read.”

90 Chapter 7

Variable

Part with heading “Variable” describes necessary variables when using the object. It gives the description, data type, allowable range, preset value, uni t, resoluti on, and notes for variable (italic) shown in the syntax.

Variables declared as the string data type (String) are case insensitive. For variables of the string type that indicate arguments (written as Param in the syntax), you can omit lower-case letters.

The data types of the E5061A/E5062A COM objects include 5 types as shown in Table 7-1. Before using variables, declare the data type of each variable. If you do not declare the data type of a variable, it is automatically dealt as the variant type.

Table 7-1 Data type

COM Object Reference

Variable

Data type Name Consumed

memory

Long Long integer

type

Double Double

precision floating point type

Boolean Boolean type 2 bytes -1 (True) or 0 (False) String Character

string type

Variant Variant type 16 bytes No limitation

*1.For a fixed length string, declare the number of characters.

4 bytes -2,147,483,648 to 2,147,483,647

8 bytes For a negative value:

byte/alphan umeric character

Range

-1.79769313486232E+308 to -4.94065645841247E-324 For a positive value:

-1.79769313486232E+308 to -4.94065645841247E-324

Up to approximately 2 billion characters

Examples

Part with heading “Examples” describes a simple example of how to use the object for coding with E5061A/E5062A VBA.

Related Objects

Part with heading “Related objects” describes related objects when using the object.

Chapter 7 91

COM Object Reference

Equivalent Key

Part with heading “Equivalent key” shows the operational procedure of the front panel keys that has the same effect as this object.

[Key] Indicates that you press the key named Key. [Key] - Item In dicates a series of k e y o peration in which y ou p res s the [Key]

key, move the focus to the button called Item on the displayed menu using t he key.

[←↓] key and so on, and then press the [Enter]

92 Chapter 7

Agilent 87075C Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Introduction and Installation

Introduction to the Multiport Test Set

Introduction to the Multiport Test Set

A Complete Multiport Test System

Fully Characterize Your Devices with a Single Connection

Improve Your Competitiveness with a Fully Specified Test System

Eliminate Redundant Connection of Calibration Standards with Test Set Cal

Reduce the Effects of Test-System Drift with SelfCal

Decrease Calibration Times and Increase Production Throughput

Improve Measurement Accuracy with Two-Port Calibration

Typeface Conventions

Sample (bold) Boldface type is used when a term is

Sample (Italic) Italic type is used for emphasis.

Sample menu/button/box Indicates a menu/button/box on the screen

Sample block/toolbar Indicates a block (group of hardkeys) or a

If You are Using an 8712ET/ES or 8714ET/ES Analyzer

If You are Using an 8712ET/ES or 8714ET/ES Analyzer

Installation

Installation

• “Step 1. Check the Shipment”

• “Step 2. Determine Network Analyzer Compatibility”

• “Step 3. Connect the Test Set to the Analyzer”

• “Step 4. Satisfy Electrical and Environmental Requirements”

• “Step 5. Activate the Test Set”

• “Step 6. Connect Peripheral Devices”

Figure 1-1 87050E Multiport Test Set — Three Versions

87050E Option 004 — Four Port Test Set

87050E Option 008 — Eight Port Test Set

87050E Option 012 — Twelve Port Test Set

Figure 1-2 87075C Multiport Test Set — Two Versions

87075C Option 006 — Six Port Test Set

87075C Option 012 — Twelve Port Test Set

Step 1. Check the Shipment

Check the items received against Table 1-1 to make sure that you received everything.

Table 1-1 Test Set Accessories Supplied

Item No. Description Quantity Part Number

1 Power Cord 1 See Figure 4-3. 2 Type-N Cable (Analyzer to test set’s

6 Parallel Port Interface Cable 1 8120-6818 7 87050E and 87075C User's and Service Guide

87075-90027

87050-90026

(for 871x Network Analyzers) 8 Test Set Calibration Disk 1 N/A 9 Performance Te st Progr ams Disk Set

1 08714-60049

(DOS and LIF formats) 10 CD-ROM 1 08714-90051

Figure 1-3 Test Set Accessories Supplied

Step 2. Determine Network Analyzer Compatibility

If you are using a 8712ET/ES or 8714ET/ES analyzer, refer to “If You are Using an

Step 3. Connect the Test Set to the Analyzer

For using your system on a bench, configure and connect the two instruments as shown in Figure 1-4: Connect the Parallel In connector of the test set to the analyzer Parallel connector. Use the parallel cable that was shipped with the multiport test set.

If you will be installing your system in a rack, read “Installing the System in a

Figure 1-4 System Configuration

Installing the System in a Rack

T o install yo ur system in an 8 5043D rack, follow the instructions in the rack manual.

Step 4. Satisfy Electrical and Environmental Requirements

2. Ensure the available ac power source meets the following requirements:

Nominal Range

Frequency: 50/60 Hz 47–63 Hz Line Voltage: 100/115 V or 230/240 V 90–264 V Power 45 W max

3. Ensure the operating environment meets the following requirements for safety:

• indoor use

• altitude up to 15,000 feet (4,572 meters)

•temperature 0 °C to 55 °C

Figure 1-5 Protective Earth Ground

Figure 1-6 Ventilation Clearance Requirements

6. Set up a static-safe workstation. Electrostatic discharge (ESD) can damage or destroy components.

• table mat with earth ground wire: part number 9300-0797

Step 5. Activate the Test Set

1. Connect the semi-rigid cables that were shipped with your test set as shown in

Figure 1-7 Connect the Front Panel RF Cables

2. Turn on the test set .

3. Turn on the analyzer and Press [System] - to activate the test set control.

Step 6. Connect Peripheral Devices

Preventive Maintenance

CAUTION 87050E multiport test set only:

CAUTION 87075C multiport test set only:

Preventive Maintenance

Cleaning the Test Set

2 Making Measurements