Agilent E4419B Users Guide

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User’s Guide

HP E4419B Power Meter

HP Part no. E4419-90006

December, 1998

Printed in the UK.

ii HP E4419B User’s Guide

Legal Information

Notice

Information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and ﬁtness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishings, performance, or use of this material. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of HP.

Certiﬁcation

Hewlett-Packard Company certiﬁes that this product met its published speciﬁcations at the time of shipment from the factory. Hewlett-Packard 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.

Warranty

This Hewlett-Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Company will at its option, either repair or replace products which prove to be defective. For warranty service or repair, this product must be returned to a service facility designated by HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping charges, duties, and taxes for products returned to HP from another country. HP warrants that its software and ﬁrmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument. HP does not warrant that the operation of the instrument, or ﬁrmware will be uninterrupted or error free.

HP E4419B User’s Guide iii

Legal Information

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modiﬁcation or misuse, operation outside of the environmental speciﬁcations for the product, or improper site preparation or maintenance. NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

iv HP E4419B User’s Guide

Equipment Operation

Warnings and Cautions

This guide uses warnings and cautions to denote hazards.

WARNING A warning calls attention to a procedure, practice or the

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

Caution A caution calls attention to a procedure, practice or the like which,

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

Personal Safety Considerations

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 the instrument dangerous. Intentional interruption is prohibited. If this instrument is not used as speciﬁed, the protection provided by the equipment could be impaired. This instrument must be used in a normal condition (in which all means of protection are intact) only. No operator serviceable parts inside. Refer servicing to qualiﬁed personnel. To prevent electrical shock, do not remove covers. For continued protection against ﬁre hazard, replace the line fuse(s) only with fuses of the same type and rating (for example, normal blow, time delay, etc.). The use of other fuses or material is prohibited.

HP E4419B User’s Guide v

General Safety Considerations

WARNING Before this instrument is switched on, make sure it has

been properly grounded through the protective conductor of the ac power cable to a socket outlet provided with protective earth contact. Any interruption of the protective (grounding) conductor, inside or outside the instrument, or disconnection of the protective earth terminal can result in personal injury.

Caution Any adjustments or service procedures that require operation of

the instrument with protective covers removed should be performed only by trained service personnel.

Markings

The CE mark shows that the product complies with all the relevant European legal Directives (if accompanied by a year, it signiﬁes when the design was proven.

GROUP 1

ISM

vi HP E4419B User’s Guide

CLASS A

This is the symbol of an Industrial Scientiﬁc and Medical Group 1 Class A product.

The CSA mark is a registered trademark of the Canadian Standards Association.

External Protective Earth Terminal.

While this is a Class I product, provided with a protective earthing conductor in a power cord, an external protective earthing terminal has also been provided. This terminal is for use where the earthing cannot be assured. At least an 18AWG earthing conductor should be used in such an instance, to ground the instrument to an assured earth terminal.

General Safety Considerations

IEC 1010-1 Compliance

This instrument has been designed and tested in accordance with IEC Publication 61010-1 +A1:1992 Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use and has been supplied in a safe condition. The instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition.

Statement of Compliance

This product has been designed and tested for compliance with IEC 60529 (1989) Degrees of Protection Provided by Enclosures (IP Code). Level IPx4 is attained if, and only if, the carry case( part number HP 34141A) is ﬁtted.

User Environment

This product is designed for use in a sheltered environment (avoiding extreme weather conditions) in accordance with Pollution Degree 3 deﬁned in IEC 60664-1, with the carry case ( part number HP 34141A) ﬁtted over the instrument.

The product is suitable for indoor use only, when this carry case is not ﬁtted.

Installation Instructions

To avoid unnecessary over-temperature conditions, while this carry case is ﬁtted do not apply an ac mains supply voltage, only operate your HP E4419B from the battery pack.

HP E4419B User’s Guide vii

Regulatory Information

Sound Emission

Herstellerbescheinigung

Diese Information steht im Zusammenhang mit den Anforderungen der Maschinenlarminformationsverordnung vom 18 Januar 1991.

• Sound Pressure LpA < 70 dB.

• Am Arbeitsplatz.

• Normaler Betrieb.

• Nach DIN 45635 T. 19 (Typprufung).

Manufacturers Declaration

This statement is provided to comply with the requirements of the German Sound DIN 45635 T. 19 (Typprufung).

• Sound Pressure LpA < 70 dB.

• At operator position.

• Normal operation.

• According to ISO 7779 (Type Test).

Australian EMC Regulations

The C-Tick mark is a registered trademark of the Spectrum Management Agency of Australia. This signiﬁes compliance with the Australian EMC Framework Regulations under the terms of the Radiocommunications Act of 1992.

viii HP E4419B User’s Guide

Regulatory Information

Declaration of Conformity

according to ISO/IEC Guide 22 and EN45014

Manufacturer’s Name: Hewlett Packard Ltd. Manufacturer's Address:

Declares that the product

Product Name

Model Numbers: Product Options:

Conforms with the protection requirements of European Council Directive 89/336/EEC on the approximation of the laws of the member states relating to electromagnetic compatibility.

Against EMC test speciﬁcations EN 55011:1991 (Group 1, Class A) and EN 50082-1:1992

As Detailed in:

Assessed by:

Technical Report Number:6893/2200/CBR, dated 23 September 1997

Supplementary Information: The product conforms to the following safety standards

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC, and carries the CE-marking accordingly. This product is also designed to meet IPx4 in accordance with IEC 60529:1989 / EN 60529:1992.

South Queensferry, Scotland 22 October 1998

Queensferry Microwave Division South Queensferry West Lothian, EH30 9TG Scotland, United Kingdom

Dual Channel Power Meter

HP E4419B

This declaration covers all options of the above products as detailed in TCF A-5951-9852-02

Electromagnetic Compatibility (EMC) Technical Construction File (TCF) No. A-5951-9852-01

Dti Appointed Competent Body EMC Test Centre, GEC-Marconi Avionics Ltd., Maxwell Building, Donibristle Industrial Park, KY11 5LB Scotland, United Kingdom

EN61010-1 (1993) / IEC 1010-1 (1990) + A1 (1992) CSA-C22.2 No. 1010.1-92 EN60825-1 (1994) / IEC 825-1 (1993)

Location Date

Europe Contact: Your local Hewlett-Packard Sales and Service Ofﬁce or Hewlett-Packard GmbH, Department 2Q /

Standards Europe, Herrenberger Strasse 130, D7030 Boblinger (Fax; +49-7031-143143).

R.M. Evans / Quality Manager

HP E4419B User’s Guide ix

List of Related Publications

The HP E4419B User’s Guide is also available in the following languages:

• English Language User’s Guide - Standard

• German Language User’s Guide - Option ABD

• Spanish Language User’s Guide - Option ABE

• French Language User’s Guide - Option ABF

• Italian Language User’s Guide - Option ABZ

• Japanese Language User’s Guide - Option ABJ

HP E4418B/E4419B Programming Guide is shipped as standard.

HP E4418B/E4419B Service Guide is available by ordering Option 915.

HP E4418B/E4419B CLIPs (Component Location and Information Pack)

is available by ordering E4418-90031.

Useful information on SCPI (Standard Commands for Programmable Instruments) can be found in:

• A Beginner’s Guide to SCPI, which is available by ordering HP Part Number 5010-7166.

• The SCPI reference manuals which are available from: SCPI Consortium, 8380 Hercules Drive, Suite P3, La Mesa, CA 91942, USA. Telephone: 619-697-4301 Fax: 619-697-5955

x HP E4419B User’s Guide

HP E4419B Options

The HP E4419B power meters have the following options available:

• Option 001, supplies an internal rechargeable battery providing full instrument functionality when access to an ac power outlet is not available.

• Option 002, supplies parallel rear panel sensor input(s). The power reference oscillator output is on the front panel.

• Option 003, supplies parallel rear panel sensor input(s). The power reference oscillator output is also on the rear panel.

• Option 004, deletes the HP 11730A sensor cable(s) provided.

• Option 0BO, deletes manual set.

• Option 908, provides rackmount kit for one instrument.

• Option 909, provides rackmount kit for two instruments.

• Option 915, provides the HP E4418B/E4419B Service Guide.

• Option 916, provides an additional HP E4419B User’s Guide and HP E4418B/E4419B Programming Guide.

• Option 1BN, provides MIL-STD 45662A, Certiﬁcate of Calibration.

• Option 1BP, provides MIL-STD-45662A, Certiﬁcate of Calibration and data.

Available Accessories

• HP 34161A Accessory Pouch

• HP 34141A Yellow soft carry/operating case

• HP 34131A basic instrument transit case

• HP E9287A Spare battery pack - for instruments ﬁtted with option 001 only

• HP 34397A 12 Vdc to 115 Vac inverter (Option 0E3 230 V)

• The following HP power sensor cables are available:

■ HP 11730A 1.5 m (7.5 ft)

■ HP 11730B 3 m (10 ft)

■ HP 11730C 6.1 m (20 ft)

■ HP 11730D 15.2 m (50 ft)

■ HP 11730E 30.5 m (100 ft)

■ HP 11730F 61 m (200 ft)

HP E4419B User’s Guide xi

About this Guide

Chapter 1: Getting Started

This chapter prepares the power meter for use and helps you to get familiar with a few of the front panel features.

Chapter 2: Power Meter Operation

This chapter gives a detailed description of the capabilities and operation of the power meter. You will ﬁnd this chapter useful when you are operating the power meter from the front panel.

Chapter 3: Menu Map Reference

This chapter details diagrammatically the menu maps for the power meter. It also gives a description of all the power meter’s keys.

Chapter 4: Error Messages

This chapter lists the error messages that may appear as you are working with the power meter. Each description contains information to help you diagnose and solve the problem.

Chapter 5: Speciﬁcations

This chapter lists the power meter’s speciﬁcations and describes how to interpret these speciﬁcations.

xii HP E4419B User’s Guide

Table of Contents

Legal Information ........................................................................iii

Notice .....................................................................................iii

Certification ...........................................................................iii

Warranty................................................................................iii

Limitation of Warranty......................................................... iv

Exclusive Remedies............................................................... iv

Equipment Operation ................................................................... v

Personal Safety Considerations............................................. v

General Safety Considerations.................................................... vi

Markings................................................................................ vi

IEC 1010-1 Compliance........................................................ vii

Statement of Compliance ..................................................... vii

User Environment................................................................ vii

Installation Instructions ...................................................... vii

Regulatory Information ............................................................. viii

Sound Emission ................................................................... viii

Australian EMC Regulations.............................................. viii

List of Related Publications ......................................................... x

HP E4418B Options..................................................................... xi

Available Accessories ............................................................ xi

About this Guide ......................................................................... xii

Page

Getting Started .................................................................................... 1-1

Introduction................................................................................... 1-2

Turning On the Power Meter ....................................................... 1-3

The Front Panel at a Glance ........................................................ 1-4

The Display Layout....................................................................... 1-7

Selecting Your Display Layout .............................................. 1-11

Window Symbols........................................................................... 1-14

Warning Symbol ..................................................................... 1-14

Confirmation Window ............................................................ 1-14

Wait Symbol............................................................................ 1-14

1 of N Entry Window.............................................................. 1-15

Numeric or Alphanumeric Entry Window ............................ 1-15

HP E4419B User’s Guide Contents-1

The Rear Panel at a Glance.......................................................... 1-16

Adjusting the Carrying Handle.................................................... 1-18

Rack Mounting the Power Meter ................................................. 1-19

Power Meter Operation ..................................................................... 2-1

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

Battery Operation (Option 001) ................................................... 2-3

General Information............................................................... 2-3

Running Time......................................................................... 2-3

Charging Times ...................................................................... 2-4

Backlight................................................................................. 2-4

Battery Removal/Replacement .............................................. 2-5

Zeroing and Calibrating the Power Meter................................... 2-7

Zeroing the Power Meter........................................................ 2-7

Zero/Cal Lockout..................................................................... 2-7

Calibrating the Power Meter ................................................. 2-8

Calibration Procedure Using HP E-Series

Power Sensors......................................................................... 2-8

Calibration Procedure using HP 8480 Series

Power Sensors......................................................................... 2-9

Zeroing and Calibrating Using TTL Inputs.......................... 2-12

Making Measurements with the HP E-Series

Power Sensors ............................................................................... 2-15

Procedure ................................................................................ 2-15

Making Measurements with the HP 8480 Series

Power Sensors ............................................................................... 2-17

Procedure ................................................................................ 2-17

Making Measurements using Sensor Calibration Tables........... 2-19

Selecting a Sensor Calibration Table .................................... 2-19

Making the Measurement...................................................... 2-20

Editing Sensor Calibration Tables ........................................ 2-21

Making Measurements using Frequency Dependent

Offset Tables ................................................................................. 2-27

Selecting a Frequency Dependent Offset Table.................... 2-27

Making the Measurement...................................................... 2-28

Editing Frequency Dependent Offset Tables........................ 2-29

Setting the Units of Measurement............................................... 2-32

Selecting Units of Measurement from the Softkeys ................... 2-33

Making Relative Measurements .................................................. 2-34

Procedure ................................................................................ 2-34

Setting the Resolution .................................................................. 2-35

Setting Offsets............................................................................... 2-36

Setting Channel Offsets......................................................... 2-36

Contents-2 HP E4419B User’s Guide

Setting Display Offsets .......................................................... 2-36

Setting Averaging ......................................................................... 2-38

Step Detection......................................................................... 2-39

Measuring Pulsed Signals............................................................ 2-41

Setting Measurement Limits ....................................................... 2-43

Setting Channel Limits.......................................................... 2-43

Setting Window Limits .......................................................... 2-44

Checking for Limit Failures................................................... 2-47

Selecting a Digital or Analog Display.......................................... 2-49

Setting the Range ......................................................................... 2-52

Configuring the Remote Interface................................................ 2-53

HP-IB ...................................................................................... 2-53

RS232/RS422 .......................................................................... 2-54

Remote Interface Overview.................................................... 2-56

Programming Language Selection ........................................ 2-58

Recorder Output............................................................................ 2-59

Leveling a Source Output ...................................................... 2-60

Saving and Recalling Power Meter Configurations .................... 2-61

How Measurements are Calculated............................................. 2-63

Presetting the Power Meter ......................................................... 2-64

Preset Conditions ................................................................... 2-64

Self Test......................................................................................... 2-66

Power On Self Test................................................................. 2-66

Front Panel Selection of Self Tests........................................ 2-67

Remote Testing....................................................................... 2-69

Test Descriptions.................................................................... 2-70

Operator Maintenance.................................................................. 2-73

Replacing the Power Line Fuse ............................................. 2-73

Contacting Hewlett-Packard........................................................ 2-74

Before calling Hewlett-Packard............................................. 2-74

Check the Basics..................................................................... 2-75

Instrument serial numbers.................................................... 2-75

Sales and Service Offices ....................................................... 2-77

Returning Your Power Meter for Service.............................. 2-80

Menu Reference................................................................................... 3-1

Introduction................................................................................... 3-2

The Front Panel Menu Maps ....................................................... 3-3

dBm/W Menu .......................................................................... 3-3

Frequency/Cal Fac Menu ....................................................... 3-4

Meas Setup Menu................................................................... 3-5

Rel/Offset Menu...................................................................... 3-6

Save/Recall Menu ................................................................... 3-6

HP E4419B User’s Guide Contents-3

System Inputs Menu (1 of 4).................................................. 3-7

System Inputs Menu (2 of 4).................................................. 3-8

System Inputs Menu (3 of 4).................................................. 3-9

System Inputs Menu (4 of 4).................................................. 3-10

Zero/Cal Menu ........................................................................ 3-11

Front Panel Menu Reference........................................................ 3-12

Diagrammatical Hardkeys..................................................... 3-36

Error Messages .................................................................................... 4-1

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

Error Messages ............................................................................. 4-4

Specifications....................................................................................... 5-1

Introduction................................................................................... 5-2

Power Meter Specifications .......................................................... 5-3

Meter....................................................................................... 5-3

Accuracy.................................................................................. 5-4

Power Reference ..................................................................... 5-5

Power Meter Supplemental Characteristics ............................... 5-6

Power Reference ..................................................................... 5-6

Measurement Speed............................................................... 5-6

Zero Drift of Sensors .............................................................. 5-7

Measurement Noise................................................................ 5-7

Settling Time .......................................................................... 5-9

Power Sensor Specifications .................................................. 5-12

Battery Option 001 Operational Characteristics ........................ 5-13

General Characteristics................................................................ 5-14

Rear Panel Connectors........................................................... 5-14

Environmental Characteristics.................................................... 5-15

General Conditions................................................................. 5-15

Operating Environment......................................................... 5-15

Storage Conditions ................................................................. 5-15

General .......................................................................................... 5-16

Dimensions ............................................................................. 5-16

Weight..................................................................................... 5-16

Safety ...................................................................................... 5-16

Remote Programming ............................................................ 5-16

Non-Volatile Memory ............................................................. 5-17

Contents-4 HP E4419B User’s Guide

List of Figures

Page

2-1 Battery Status............................................................................ 2-4

2-2 Battery Removal/Replacement.................................................. 2-6

2-3 Rmt I/O Port TTL Inputs .......................................................... 2-12

2-4 “Sensor Tbls” Screen.................................................................. 2-20

2-5 “Edit Cal” Screen ....................................................................... 2-21

2-6 “Offset Tbls” Screen................................................................... 2-28

2-7 “Edit” Screen.............................................................................. 2-29

2-8 Effect of Offsets on a Channel Measurement........................... 2-37

2-9 Averaged Readings .................................................................... 2-39

2-10 Pulsed Signal ............................................................................. 2-41

2-11 Limits Checking Application..................................................... 2-44

2-12 Limits Checking Results ........................................................... 2-44

2-13 Remote I/O TTL Outputs........................................................... 2-46

2-14 Pass/Fail Limit Indicators......................................................... 2-48

2-15 Digital Display........................................................................... 2-49

2-16 Analog Display........................................................................... 2-49

2-17 Digital and Analog Display ....................................................... 2-49

2-18 RS232/422 Pin Assignment....................................................... 2-54

2-19 Interface Overview Examples ................................................... 2-57

2-20 Test Setup for Recording Swept Measurements...................... 2-59

2-21 “Save/Recall” Screen.................................................................. 2-62

2-22 How Measurements are Calculated.......................................... 2-63

2-23 Replacing the Fuse .................................................................... 2-73

4-1 Error Annunciator Position....................................................... 4-2

HP E4419B User’s Guide Contents-5

Contents-6 HP E4419B User’s Guide

List of Tables

Page

2-1 Connecting the HP 8480 Series Power Sensors

During Calibration .................................................................... 2-11

2-2 TTL Inputs Control Logic.......................................................... 2-12

2-3 TTL Input Timing Diagram 1 ................................................... 2-13

2-4 TTL Inputs Timing Diagram 2 ................................................. 2-14

2-5 Measurement Units................................................................... 2-32

2-6 Range of Values for Window Limits ......................................... 2-45

5-1 Zero Set Specifications .............................................................. 5-4

5-2 Noise Multiplier......................................................................... 5-7

5-3 Power Sensor Specifications...................................................... 5-8

5-4 Settling Time ............................................................................. 5-9

5-5 Settling Time ............................................................................. 5-10

HP E4419B User’s Guide Contents-7

Contents-8 HP E4419B User’s Guide

Getting Started

Introduction

One of the ﬁrst things you will want to do with your power meter is to switch it on and become acquainted with its front panel. The sections in this chapter prepare the power meter for use and help you get familiar with some of the front panel operations.

The front panel consists of both hardkeys and softkeys which allow you to select various functions and operations. When some hardkeys are selected the corresponding softkey labels are displayed on the power meter display.

If you are using the power meter remotely refer to the HP E4418B/4419B Programming Guide for remote operating details.

1-2 HP E4419B User’s Guide

Getting Started

Turning On the Power Meter

The following steps show you how to turn on the power meter and verify that it is operating correctly.

1. Connect the power cord and turn on the power meter.

The front panel display and the green power LED light up when

the power meter is switched on. The power meter performs it’s

power on self test. If the self test is not successful the error

annunciator turns on. If this occurs contact your Hewlett-Packard

Sales and Service ofﬁce for instructions on returning the power

meter to Hewlett-Packard for service.

Caution This instrument is designed for use in Installation Category II and

Pollution Degree 2 per IEC 1010 and 664 respectively.

Caution This instrument has an autoranging line voltage input, be sure

the supply voltage is within the range of 85 to 264 Vac.

Note If the power meter has been stored at extremely low temperatures

outwith the operating range of the power meter, the display may take a few minutes to operate.

2. Set the display contrast if required.

The display contrast is adjusted by pressing and . If

these softkeys are not displayed press repeatedly until they

appear.

3. Connect the power sensors.

Connect one end of each of the sensor cables to the power meter’s

channel inputs and the other ends to the power sensors.

4. Making a measurement.

A minimum warm up time of 30 minutes is recommended before

accurate measurements can be made.

Prior to making your ﬁrst measurement you must zero and

calibrate the sensor and meter combination. Refer to Chapter 2 for

further information if you are not familiar with zeroing,

calibrating or making measurements with a power meter.

HP E4419B User’s Guide 1-3

Getting Started

The Front Panel at a Glance

101112

Preset Local

This hardkey allows you to preset the power meter if you are currently working in local mode (that is, front panel operation). In local mode a conﬁrmation pop up window is displayed prior to a preset being carried out. However, if you are in remote mode (that is, HP-IB, RS232 or RS422 operation), then pressing this hardkey places the power meter in local mode provided local lock out (LLO) is not enabled.

2. Hardkeys relating to the display layout.

This hardkey allows you to select the upper or lower measurement window on the power meter’s display. The window which is selected is highlighted by a shadowed box. Any measurement setup you create is implemented in the selected window.

This hardkey allows you to choose either a one or a two window display.

1-4 HP E4419B User’s Guide

Getting Started

The Front Panel at a Glance

This hardkey switches the power meter between on and standby. When the power meter is switched to standby (that is, when this hardkey has not been selected but the line power is connected to the instrument) the red LED is lit. When the power meter is switched on the green LED is lit.

Option 001 Battery: On standby with the battery installed and the ac power source disconnected the red LED is off.

4. “System/Inputs” hardkey with softkey menu.

System

The hardkey allows access to softkey menus which affect

Inputs

the general power meter system setup, (for example the HP-IB address) and also to softkey menus which effect the setup of the channel inputs. Refer to Chapter 3 for further information about this hardkey and it’s softkey menu.

Save

Recall

This hardkey is the only one that is completely dedicated to the control of the power meter as a system. The only other hardkey which affects system parameters is the hardkey. Refer to

System Inputs

Chapter 3 for further information about this hardkey and it’s softkey menu.

6. Dedicated “Window” hardkeys with softkey menus.

Meas Setup

Rel

Offset

dBm/W

These hardkeys allow access to softkey menus which affect the setup of the measurement windows. Refer to Chapter 3 for further information about these hardkeys and their softkey menus.

7. Dedicated “Channel” hardkeys with softkey menus.

Frequency Cal Fac

Zero

Cal

These hardkeys allow access to softkey menus which affect the measurement channel. Refer to Chapter 3 for further information about these hardkeys and their softkey menus.

8. Channel Inputs.

The HP E4419B has two sensor inputs. Power meters conﬁgured with options 002 or 003 have the sensor inputs on the rear panel and the front panel.

HP E4419B User’s Guide 1-5

Getting Started

The Front Panel at a Glance

9. POWER REF Output.

The power reference output is a 50 Ω type N connector. The output signal of 1 mW at 50 MHz is used for calibrating the sensor and meter combination. Power meters conﬁgured with option 003 have the power reference on the rear panel.

10. Arrow hardkeys.

, , and hardkeys allow you to move the position of the cursor, select ﬁelds for editing, and edit alphanumeric characters. Refer to Chapter 3 for further information.

11. Menu related hardkeys.

This hardkey allows you to move through all pages of a

menu. The bottom right of the power meter display indicates the number of pages in the menu. For example, if “1 of 2” is displayed, pressing moves you to “2 of 2”. Pressing again moves you back to “1 of 2”.

This hardkey allows you to move back one level in the softkey menu. Repeatedly pressing accesses a menu which allows you to increase and decrease the display contrast.

More More

12. Softkeys.

These four keys are used to make a selection from the menus.

1-6 HP E4419B User’s Guide

Getting Started

The Display Layout

The following ﬁgure details the display layout when two measurement windows are displayed, one analog and one digital. However it is possible using the key to display just one measurement window.

3 4

1. The status reporting line displays ﬁve ﬁelds, three associated with either HP-IB, RS232 or RS422 status and two associated with error and warning conditions. The ﬁrst ﬁeld displays either “RMT” (remote, HP-IB, RS232 or RS422 operation) or “LCL” (local, front panel operation).

For HP-IB operation, the second ﬁeld displays “TLK” if the power meter is addressed to talk or “LSN” if it is addressed to listen. The third ﬁeld indicates an “SRQ” (service request).

10111213

For RS232 and RS422 operation, the second ﬁeld displays “RX” when data is being received. The third ﬁeld displays “TX” when the power meter is transmitting data.

The fourth ﬁeld indicates “ERR” for any error conditions. The last ﬁeld is used to report error and warning messages.

2. This ﬁeld displays the channel setup being measured, either A, B, A/B, B/A, A-B or B-A.

3. The measurement data is displayed in either one or two rectangular windows depending on the setting of . Pressing

HP E4419B User’s Guide 1-7

Getting Started

The Display Layout

allows you to toggle between a one or two window display. When two windows are displayed and this hardkey is pressed the single window then displayed is the one which was previously highlighted with the shadowed box. On the two window display the measurement setup menus work on the window which is shadowed.

4. This is the measurement result ﬁeld.

5. This ﬁeld displays the units of measurement, either dBm, dB, Watts or %.

6. This window is conﬁgured to show an analog meter which displays the measurement result and the meter scaling.

7. This ﬁeld displays the number of pages in the current softkey menu. For example, “1 of 2” indicates that there are two pages of softkeys and you are on the ﬁrst page. Pressing moves you

to page “2 of 2”.

8. Any softkeys available are displayed in these four ﬁelds.

9. This ﬁeld displays the title of the menu. For example, when the power meter is initially switched on the “Contrast” menu is displayed, and, if you press “Zero/Cal” is displayed.

Zero Cal

10. This ﬁeld indicates if the measurement result is outwith the upper or lower limits set. If the measurement is within the limits this ﬁeld is empty. If the measurement result is less than the minimum limit set, “Undr Lmt” is displayed. If the measurement result is more than the maximum limit set, “Over Lmt” is displayed. Refer to “Setting Measurement Limits”, on page 2-43 for further information.

11. This ﬁeld displays “Rel” if relative mode is on. Refer to “Making Relative Measurements”, on page 2-34 for further information.

12. This ﬁeld displays “Ofs” if an offset is set. Refer to “Setting Offsets”, on page 2-36 for further information.

13. This ﬁeld displays “Rng Hld” if a range is selected. Refer to “Setting the Range”, on page 2-52 for further information.

14. This ﬁeld displays “Dty Cyc” if a duty cycle is set. This allows you to measure the power of a pulsed signal. Refer to “Measuring Pulsed Signals”, on page 2-41 for further information.

15. Theinformation in this ﬁeld is displayed on two lines and depends on thecombination of sensor type, sensor calibration table and frequency dependent offset table currently selected. Table 1-1 shows all the possible combinations for the two lines of the display. Find the table entry which matches your display and use the

1-8 HP E4419B User’s Guide

Getting Started

The Display Layout

reference number in the left-hand column to look up Table 1-2 for the combination of sensor type and correction being applied to the current measurement. For example, the display shows:

50MHz

(10,C)

This is equivalent to reference number 4 in Table 1-1 and when looked up in Table 1-2 shows that:

• the sensor type is 8480 series

• a sensor calibration table is selected (10)

• a frequency dependent offset table is selected(C).

Table 1-1

Reference

Number

1 2 3 4 5 6

Where “y” is the frequency multiplier (M or G), “nn” is the sensor calibration table number and “a” is the frequency dependent offset table letter.

Upper

Display Line

Lower

Display Line

CF:xxx.x% CF:xxx.x% xxx.xyHz(a) xxx.xyHz (nn) xxx.xyHz (nn,a) xxx.xyHz xxx.xyHz (a)

HP E4419B User’s Guide 1-9

Getting Started

The Display Layout

Table 1-2

Reference

Number

Sensor

Series

8480 Series Sensors

E-Series Sensors

Sensor

Correction

Directly entered Calibration Factor

Frequency dependent

- from selected sensor calibration table

Frequency dependent

- downloaded directly from sensor

Frequency Dependent

Offset Correction

None

From offset table

None

From offset table

None

From offset table

1-10 HP E4419B User’s Guide

Getting Started

The Display Layout

Selecting Your Display Layout

Your power meter display is extremely ﬂexible. It can be used to display a variety of different measurements and windows depending on your needs. The following diagram details the various options available to you.

Display

Select using

One Window

Measurement Type

A, B, A/B, B/A,

A-B, B-A

Digital

Display

Select using

Meas

, Input Select

Setup

Select using

Meas

, Display Format

Setup

Analog

Display

Upper

Window

Measurement Type

A, B, A/B, B/A,

A-B, B-A

Meas Setup

Digital

Display

Analog

Display

Two Windows

Select using

Meas

, Input Select

Setup

Select using

, Display Format

Lower

Window

Measurement Type

A, B, A/B, B/A,

A-B, B-A

Digital

Display

Analog

Display

HP E4419B User’s Guide 1-11

Getting Started

The Display Layout

Display Tutorial

If you wish to experiment with the display layout before you move on to make measurements, the following procedure guides you through a few of the display setups you can choose.

1.Press , .

Preset Local

Notice that the upper window is the one which is highlighted by the dark box.

2.Press . The display remains the same apart from the fact that it is now the lower window that is highlighted by the shadowed box.

Confirm

3.Press , ,

Meas Setup

Meter Dgtl Anlg

Display Format

(Anlg should be

highlighted). The display now shows one analog and one digital window.

4.Press . The display now only shows one window. This is the analog window which was selected in the previous step.

5.Press . The display now shows only the digital window.

1-12 HP E4419B User’s Guide

6. Press . The display now shows

A/B

both an analog and digital window.

Getting Started

The Display Layout

7. Press , , .

Meas Setup

Input Select B/A

Notice that the upper window is now set up to make a channel B over channel A ratio measurement.

8. Press to select the lower window. Press . Notice that the lower window is now set up to make a channel A over channel B ratio measurement.

HP E4419B User’s Guide 1-13

Getting Started

Window Symbols

There are a number of different graphic symbols and pop up windows that can occur on the power meter display. These can occur for a variety of reasons such as when:

• an error or warning occurs.

• a conﬁrmation is required.

• you are required to wait while the power meter carries out a procedure.

• you are required to select an entry from a list.

• you are required to enter an alphanumeric value.

Warning Symbol

The warning symbol is displayed either directly in the measurement window or in a pop up window when such an event occurs. A pop up window is displayed for approximately two seconds. The text in the pop up window gives details of the warning type. This symbol may also appear on a measurement window, for example, to indicate that a power sensor is not connected.

Conﬁrmation Window

This pop up window is displayed when you are required to press to verify your previous selection. For example, prior to a preset being carried out.

Confirm

Wait Symbol

The wait symbol is displayed when the power meter is carrying out a procedure but no action is required from you. The symbol may appear directly in the measurement window or in a pop up window. It may appear, for example, during, zeroing or calibration.

1-14 HP E4419B User’s Guide

1 of N Entry Window

This pop up window is displayed when you are required to select an entry using

and from the list.

Numeric or Alphanumeric Entry Window

This pop up window is displayed when you are required to modify numeric or alphanumeric data. The and keys move the position of the cursor. The and keys increment and decrement the alphanumeric digit on which the cursor is currently positioned.

Getting Started

Window Symbols

HP E4419B User’s Guide 1-15

Getting Started

The Rear Panel at a Glance

134

1. Channel A (Option 002 or 003 only)

2. Channel B (Option 002 or 003 only)

3. Power Ref (Option 003 only)

The power reference output is a 50 Ω type N connector. The output signal is used for calibrating the sensor meter combination.

4. Recorder Outputs

These outputs produces a dc voltage that corresponds to the power level of the channel input. Refer to “Recorder Output”, on page 2-59 for further information.

10 9

5. Power socket

This power meter has an auto conﬁguring power supply. This allows it to operate over a range of voltages without manually being set to a certain voltage.

6. Fuse

An F3.15AH fuse is installed for all voltage supplies.

7. HP-IB

This connector allows the power meter to be controlled remotely using the Hewlett-Packard Interface Bus.

8. RS232/422

1-16 HP E4419B User’s Guide

Getting Started

The Rear Panel at a Glance

This connector allows the power meter to be controlled remotely using either the RS232 or RS422 serial interface standards.

9. Serial Label

Each power meter has it’s own individual identiﬁcation number. Refer to “Instrument serial numbers”, on page 2-75 for further information.

10. Rmt I/O

This connector is an RJ-45 series shielded modular jack assembly. It provides a TTL logic level output when a measurement exceeds a predetermined limit. TTL inputs are also provided to initiate zero and calibration cycles.

11. Ground Connector

Binding post, accepts 4 mm plug or bare-wire connection.

HP E4419B User’s Guide 1-17

Getting Started

Adjusting the Carrying Handle

To adjust the position, grasp the handle by the sides and pull outward. Rotate the handle to the desired position.

Bench top viewing positions Carrying position

1-18 HP E4419B User’s Guide

Getting Started

Rack Mounting the Power Meter

You can mount the power meter in a standard 19 inch rack cabinet using one of three optional kits. Instructions and mounting hardware are included with each rack mounting kit. Any HP System II instrument can be rack mounted beside the HP E4419B power meter.

To rack mount the power meter:

1. Remove the handle by rotating it to the vertical position and pulling the ends outward

2. Remove the rubber bumper by stretching a corner and sliding it off.

Front

HP E4419B User’s Guide 1-19

Rear (bottom view)

Getting Started

Rack Mounting the Power Meter

To rack mount a single instrument, order option 908, or adapter kit 5063-9240.

To rack mount two instruments side by side, order option 909, or lock-link kit 5061-9694 and ﬂange kit 5063-9212.

To install one or two instruments in a sliding support shelf, order shelf 5063-9255, and slide kit 1494-0015 (for a single instrument, also order ﬁller panel 5002-3999).

1-20 HP E4419B User’s Guide

Power Meter Operation

Introduction

This chapter describes the parameters which conﬁgure the power meter to make measurements and help you determine settings to optimize performance. This chapter contains the following sections:

• “Battery Operation (Option 001)”, on page 2-3

• “Zeroing and Calibrating the Power Meter”, on page 2-7.

• “Calibrating the Power Meter”, on page 2-8.

• “Making Measurements with the HP E-Series Power Sensors”, on page 2-15.

• “Making Measurements with the HP 8480 Series Power Sensors”, on page 2-17.

• “Making Measurements using Sensor Calibration Tables”, on page 2-19.

• “Making Measurements using Frequency Dependent Offset Tables”, on page 2-27

• “Setting the Units of Measurement”, on page 2-32.

• “Selecting Units of Measurement from the Softkeys”, on page 2-33.

• “Making Relative Measurements”, on page 2-34.

• “Setting the Resolution”, on page 2-35.

• “Setting Offsets”, on page 2-36.

• “Setting Averaging”, on page 2-38.

• “Measuring Pulsed Signals”, on page 2-41.

• “Setting Measurement Limits”, on page 2-43.

• “Channel Measurements”, on page 2-52.

• “Making Difference Measurements”, on page 2-53.

• “Making Ratio Measurements”, on page 2-54.

• “Selecting a Digital or Analog Display”, on page 2-49.

• “Setting the Range”, on page 2-52.

• “Conﬁguring the Remote Interface”, on page 2-53.

• “Recorder Output”, on page 2-59.

• “Saving and Recalling Power Meter Conﬁgurations”, on page 2-61.

• “How Measurements are Calculated”, on page 2-63

• “Presetting the Power Meter”, on page 2-64.

• “Self Test”, on page 2-66.

• “Operator Maintenance”, on page 2-73.

• “Contacting Hewlett-Packard”, on page 2-74.

2-2 HP E4419B User’s Guide

Power Meter Operation

Battery Operation (Option 001)

The battery option (001) allows the power meter to be used in operating environments where there is no convenient access to an ac power source.

General Information

With the battery option installed and the power meter connected to an ac power source, the meter operates from the ac source and the battery runs in a controlled charge mode.

If the meter is powered up under battery power, or if ac power is lost while connected to an ac source, a pop up window displays the message “Running Under Battery Power”. When this screen is visible the backlight mode (see “Backlight”, on page 2-4) is over-ridden and the backlight is on continuously. Pressing the softkey returns the display to the previous screen.

Carry Case

Continue

A soft carry/operating case is available which makes it easy to transport and operate your power meter in installation and maintenance environments. To obtain a carry case order HP part number 34141A.

Caution Do not attempt to recharge the power meter or operate the power

meter from an ac power source while it is contained in the carry case.

Running Time

A fully charged battery will typically allow the power meter to be used continuously for up to 3 hours with the backlight off and 2 hours with the backlight on.

Battery Status

You can check the status of the battery by pressing , ,

Service

, , . The Battery Status display (Figure 2-1 )

Battery

System

Inputs

shows the charge condition of the battery represented on an analog meter scale. Below the analog scale is a message indicating the estimated power meter running time under battery operation with the present charge level.

HP E4419B User’s Guide 2-3

Power Meter Operation

Battery Operation (Option 001)

Running time can be increased by operating the power meter with the display backlight turned off (see “Backlight”, on page 2-4 ).

Figure 2-1: Battery Status

When the power meter is running on battery power and there are less than 10 minutes of run-time remaining, the message “Battery Low” appears at the top of the screen. In addition, a pop up window appears every minute with the message “Battery Power Low”.

Charging Times

The battery charges automatically when the power meter is connected to an ac source. From an empty state the battery is fully charged in less than 2 hours. After approximately 50 minutes the battery has enough charge to enable 1 hour of operation with the backlight on. After approximately 35 minutes the battery has enough charge to enable 1 hour of operation with the backlight off.

Backlight

When you are operating the power meter under battery power you can turn the display backlight off or on, or set it to timed mode. In timed mode the display backlight turns off 10 minutes after the last key press - the display can be turned on again by pressing any key.

Working with the backlight off reduces the drain on the battery and increases the operating time available by approximately 50%. The display can be comfortably read in ambient daylight with the backlight off.

2-4 HP E4419B User’s Guide

Power Meter Operation

Battery Operation (Option 001)

To access the backlight menu press , , , .

System Inputs

Use the softkeys on the menu to select either , , or .

More Service Battery

On Off Timed

Note If the power meter is connected to an ac power source the

backlight menu is greyed out and the backlight is permanently on.

Battery Removal/Replacement

The battery unit is easily removed and replaced. Follow the instructions given in Figure 2-2. To obtain a replacement battery unit order HP part number E9287A (this can only be used in power meters with option 001 installed).

WARNING This product uses a Nickel Metal Hydride battery.

Do not short circuit the battery terminals. Do not subject the battery to excessive heat. Do not dispose of by burning. Refer to your local country regulatory requirements on the disposal of Nickel Metal Hydride batteries.

Caution Observe static precautions while removing and replacing the

battery module.

HP E4419B User’s Guide 2-5

Power Meter Operation

Battery Operation (Option 001)

Figure 2-2: Battery Removal/Replacement

1. Using a ﬂat headed screwdriver, turn the two spring-loaded catches one quarter turn anticlockwise.

2. Holding the catches, pull the battery assembly clear of its slot in the power meter.

3. Support the closure assembly on a ﬂat surface.

4. Pinch the release tab between ﬁnger and thumb while -

5. lightly pressing down on the battery module.

Replacing the battery is basically a reversal of the removal procedure.

Release Tab

Battery

Module

Closure Assembly

2-6 HP E4419B User’s Guide

Power Meter Operation

Zeroing and Calibrating the Power Meter

This section describes how to zero and calibrate the power meter. You should always zero the power meter prior to calibrating it.

Zeroing the Power Meter

Zeroing adjusts the power meter for a zero power reading with no power applied to the power sensor. During zeroing, which takes approximately 10 seconds, the wait symbol is displayed.

To zero the power meter:

1. Press .

2. To zero channel A or channel B use or respectively. Alternatively, to zero both channel A and channel B sequentially, use . During zeroing the wait symbol is displayed.

Zero Cal

Zero A Zero B

Zero Both

When to Zero?

Zeroing of the power meter is recommended:

• when a 50C change in temperature occurs.

• when you change the power sensor.

• every 24 hours.

• prior to measuring low level signals. For example, 10 dB above the lowest speciﬁed power for your power sensor.

Zero/Cal Lockout

The Zero/Cal Lockout facilty provides a means of ensuring that a measurement cannot be taken until the connected sensor has been zeroed and calibrated. If the Zero/Cal Lockout facilty is enabled and a sensor is connected which has not been zeroed and calibrated, then the display window for the sensor will display the message “Please Zero + Cal ChA” or “Please Zero + Cal ChB” depending on which channel the sensor is connected to.

If you zero the sensor before calibrating it, the message changes to “Please Cal ChA” or “Please Cal ChB” depending on which channel the sensor is connected to.

HP E4419B User’s Guide 2-7

Power Meter Operation

Zeroing and Calibrating the Power Meter

If you calibrate the sensor before zeroing it, the message changes to “Please Zero ChA” or “Please Zero ChB” depending on which channel the sensor is connected to.

The Zero/Cal Lockout facility can be enabled/disabled through either the System Inputs menu or the Zero Cal menu as follows:

Press , , , or .

Press , , or .

System Inputs

Zero Cal

More More

Must Cal Off On

Calibrating the Power Meter

Calibration sets the gain of the power meter using a 50 MHz 1 mW calibrator as a traceable power reference. The power meter’s POWER REF output or a suitable external reference is used as the signal source for calibration. An essential part of calibrating is setting the correct reference calibration factor for the power sensor you are using. The HP 8480 series power sensors require you to set the reference calibration factor. The HP E-series power sensors set the reference calibration factor automatically. During calibration the wait symbol is displayed. Offset, relative and duty cycle settings are ignored during calibration.

Note During calibration the power meter automatically switches the

power reference calibrator on (if it is not already on), then after calibration it switches it to the state it was in prior to the calibration.

Calibration Procedure Using HP E-Series Power Sensors

The following procedure describes how you calibrate the power meter with an HP E-series power sensor. Since the power meter automatically downloads the HP E-series power sensor’s calibration table there is no requirement to enter the reference calibration factor. The power meter identiﬁes that an HP E-series power sensor is connected and will not allow you to select certain softkeys. The text on these softkeys appears grayed out.

2-8 HP E4419B User’s Guide

Power Meter Operation

Zeroing and Calibrating the Power Meter

Note The following procedure details the calibration for channel A. To

calibrate channel B use the same procedure using the equivalent channel B softkeys.

1. Press .

Zero Cal

2. Connect the power sensor to the POWER REF output.

3. Press , to calibrate the power meter. During

Cal Cal A

calibration the wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

Example

To calibrate both channels of the power meter with HP E-series power sensors connected to both channels.

Zero

• Press , .

Cal

• Connect the channel A power sensor to the POWER REF output.

• Press then wait till the calibration is completed.

Cal A

• Remove the channel A power sensor from the POWER REF output.

• Connect the channel B power sensor to the POWER REF output.

• Press then wait till the calibration is completed.

Cal B

Calibration Procedure using HP 8480 Series Power Sensors

The following procedure describes how you calibrate the power meter with the HP 8480 series power sensors.

Note V8486A and W8486A sensors

For most 8480 series sensors the correct (A type or D type) linearity correction table is automatically selected. However, for the V8486A and W8486A sensors the automatic selection must be overriden and the D type correction selected. Subsequent connection of another A type sensor will result in a warning message stating that “Linearity Override May be Required”.

To select the linearity type to be applied: Press , , or , or

B Linearity ATyp DTyp

System Inputs

Tables A Linearity ATyp DTyp

or .

HP E4419B User’s Guide 2-9

Power Meter Operation

Zeroing and Calibrating the Power Meter

There are a variety of methods to connect the power sensors to the power meter depending on the model of power sensor you are using. Refer to Table 2-1 on page 2-11 for details on connecting different power sensor models.

Note The following procedure details the calibration for channel A. To

calibrate channel B use the same procedure using the equivalent channel B softkeys. To calibrate both channels sequentially follow this procedure for channel A then repeat step “2” through to step “5” using the equivalent channel B softkeys.

Zero

1. Press , .

Cal

2. Verify the reference calibration factor of your power sensor with that displayed under . The value shown is obtained

A Ref CF

from the sensor calibration table if one is selected, otherwise it is the last value set or the default of 100%. If the value is not correct

A Ref CF

press . The power meter displays the reference calibration factor in a pop up window. Modify this reference calibration factor (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

3. To conﬁrm your choice press .

4. Connect the power sensor to the POWER REF output.

5. Press to calibrate the power meter. During calibration the

Cal A

wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

Example

To calibrate both channels of the power meter. The reference calibration factors for the power sensors being 98.8% and 99.4% for channel A and channel B respectively:

Zero

• Press , .

• Press . Use the , , and hardkeys to enter 98.8. Press .

• Press . Use the , , and hardkeys to enter 99.4. Press .

Cal

A Ref CF

B Ref CF

• Connect the channel A power sensor to the POWER REF output.

• Press .

Cal A

2-10 HP E4419B User’s Guide

Power Meter Operation

Zeroing and Calibrating the Power Meter

• Remove the channel A power sensor from the POWER REF output.

• Connect the channel B power sensor to the POWER REF output.

• Press .

Cal B

HP E4419B User’s Guide 2-11

Power Meter Operation

Zeroing and Calibrating the Power Meter

Table 2-1: Connecting the HP 8480 Series Power Sensors During Calibration

Sensor

Model

HP 8481A HP 8481H HP 8482A HP 8482H

HP 8481D HP 8484A

HP 8483A This power sensor requires a 75 Ω (f) to 50 Ω (m) N-Type adapter

HP R8486A HP Q8486A HP V8486A HP W8486A HP R8486D HP Q8486D

HP 8481B HP 8482B

HP 8485A This power sensor requires an APC 3.5 (f) to 50 Ω (m) N-Type

HP 8485D Prior to the power meter being zeroed and calibrated an

HP 8487A This power sensor requires an APC 2.4 (f) to 50 Ω (m) N-Type

HP 8487D Prior to the power meter being zeroed and calibrated an

These power sensors connect directly to the reference calibrator.

Prior to the power meter being calibrated an HP 11708A 30 dB reference attenuator should be connected between the power sensor and the reference calibrator. This attenuator must be removed from the power sensor input prior to making measurements.

(1250-0597) to connect to the reference calibrator. This adapter must be removed from the power sensor input prior to making measurements.

The waveguide power sensors have two connectors. The N-Type connector is the one which is used to calibrate the power meter.

These power senors are conﬁgured with an attenuator. Prior to the power meter being calibrated, this attenuator must be removed. The attenuator must be reconnected prior to making measurements.

adapter (08485-60005) to connect to the reference calibrator.

HP 11708A 30 dB reference attenuator and an APC 3.5 (f) to 50 Ω (m) N-Type adapter (08485-60005) should be connected between the power sensor and the reference calibrator. This attenuator must be removed from the power sensor input prior to making measurements.

adapter (08487-60001) to connect to the power meter.

HP 11708A 30 dB reference attenuator and an APC 2.4 (f) to 50 Ω (m) N-Type adapter (08487-60001) should be connected between the power sensor and the reference calibrator. This attenuator must be removed from the power sensor input prior to making measurements.

Connection Requirements

2-12 HP E4419B User’s Guide

Power Meter Operation

Zeroing and Calibrating the Power Meter

Zeroing and Calibrating Using TTL Inputs

You can use the TTL inputs on the rear panel Rmt I/O port to initiate zero and calibration cycles on the power meter. The connector is an RJ-45 series shielded modular jack with the TTL input pins connected as shown in Figure 2-3.

Figure 2-3: Rmt I/O Port TTL Inputs

Pin Number Connection

1 none 2 Ground 3 Upper Window TTL Output 4 Lower Window TTL Output 5 TTL Input 1

1 2 3 4 5 6 7 8

6 TTL Input 2 7 Ground 8 Ground

The TTL inputs are active low and control the zero and calibration functions as shown in Table 2-2

Table 2-2: TTL Inputs Control Logic

Input 1 Input 2 Operation

1 1 None

1 0 CAL A

0 1 ZERO BOTH

0 0 CAL B

HP E4419B User’s Guide 2-13

Power Meter Operation

Zeroing and Calibrating the Power Meter

Effective control of the zero and calibration cycles using the TTL inputs depends on correct timing of the input signals as shown in Table 2-3 and Table 2-4.

Table 2-3: TTL Input Timing Diagram 1

Timing of zero/cal inputs for conditions “01” and “10”.

Input

Operation

Time Description Value

T1 Minimum width of input 300 ms

T2 Time between input detection and start of zero/cal

cycle. This is determined by the number of averages x sample rate, or if there is an existing zero/cal operation in progress, the time for this current operation to complete. Note that the worst case is 1024 averages x 50 ms = 51.2 s. For front panel operation (in free run mode) the time is 1 x 50 ms.

T3 Maximum width of input. Longer inputs may

cause a subsequent zero/cal operation some time after the current one is complete.

T4 Time for zero/cal operation to complete. Zero Both: 10 s (each

All timings based on 100 ms ﬁrmware polling.

Max: 50 ms (typical) Min: 0 ms

4 s

8480 series sensor), 12 s (each E series sensor) Cal: 6 s (8480 series)

7 s (E series)

2-14 HP E4419B User’s Guide

Power Meter Operation

Zeroing and Calibrating the Power Meter

Table 2-4: TTL Inputs Timing Diagram 2

Timing of zero/cal inputs for condition “00”.

Inputs

Operation

Time Description Value

T5 Maximum time between inputs going low. 100 ms

T6 Minimum overlap of low inputs. 200 ms

T7 Time between input detection and start of zero/cal

T8 Time for cal operation to complete. Cal: 6 s (8480 series)

All timings based on 100 ms ﬁrmware polling. If both TTL inputs are simultaneously low under any circumstances other than those shown above, the operation is undeﬁned.

4 s

7 s (E series)

HP E4419B User’s Guide 2-15

Power Meter Operation

Making Measurements with the HP E-Series Power Sensors

This section describes how to make continuous wave measurements using the HP E-series power sensors. The HP E-series power sensors have their sensor calibration tables stored in EEPROM. This allows the frequency and calibration data to be downloaded to the power meter automatically.

To make measurements, perform the following steps:

1. Zero and calibrate the power meter.

2. Set the frequency for the signal you want to measure.

3. Take a reading.

Procedure

The following procedure details how to make a measurement on channel A of the power meter. To make a measurement on channel B use the same procedure using the equivalent channel B softkeys.

1. Ensure that no power is applied to the power sensor.

2. Press .

3. Press . During zeroing, which takes approximately 10

Zero Cal

Zero A

seconds, the wait symbol is displayed.

4. Connect the power sensor to the POWER REF output.

5. Press , to calibrate the power meter. During

Cal Cal A

calibration the wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

6. Press . The current setting of the frequency is displayed under the softkey.

7. To change this setting press . The power meter displays

Frequency Cal Fac

A Freq

the frequency in a pop up window. Modify this frequency (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

8. To conﬁrm your choice press the appropriate frequency units.

9. Connect the power sensor to the signal to be measured.

10. You must set the display to the type of measurement you require. This can either be a direct channel measurement, a ratio

2-16 HP E4419B User’s Guide

Power Meter Operation

Making Measurements with the HP E-Series Power Sensors

measurement of both channels, or a difference measurement between both channels. Use the following key presses: Press , . Select the appropriate softkey for the measurement you require, either , , , , or , then , or .

Meas Setup

Input Select

A-B B-A

A B A/B B/A

11. The measurement result is now displayed.

Example

To make a measurement on channel A using an HP E-series power sensor. The frequency of the signal to be measured is 100 MHz.

• Disconnect the power sensor from any source.

• Press .

Zero Cal

Zero A

• Connect the power sensor to the POWER REF output.

• Press , .

• Press , . Use the , , and

Cal Cal A

Frequency Cal Fac

hardkeys to enter 100. Press .

A Freq

MHz

• Connect the power sensor to the signal to be measured.

• The measurement result is now displayed.

HP E4419B User’s Guide 2-17

Power Meter Operation

Making Measurements with the HP 8480 Series Power Sensors

This section applies to all HP 8480 series power sensors. It does not apply to the HP E-series power sensors.

For the HP 8480 series power sensors there are two methods of providing correction data to the power meter:

A inputting the individual calibration factor for a frequency prior to

making the measurement, or

B using sensor calibration tables.

This section describes how to make measurements without using sensor calibration tables, that is, inputting the individual calibration factor for a frequency prior to making the measurement. This method is advantageous if you are only measuring at one frequency, as entering all the calibration data in this instance is not required.

To make measurements without sensor calibration tables perform the following steps:

1. Zero and calibrate the power meter. Before carrying out the calibration you must set the reference calibration factor of the power sensor.

2. Set the calibration factor value for the frequency of the signal you want to measure.

3. Take a reading.

Procedure

The following procedure details how to make a measurement on channel A. To make a measurement on channel B use the same procedure using the equivalent channel B softkeys.

1. Ensure that no power is applied to the power sensor.

2. Press .

3. Press . During zeroing, which takes approximately 10 seconds, the wait symbol is displayed.

4. Press .

5. Connect the power sensor to the POWER REF output.

2-18 HP E4419B User’s Guide

Zero Cal

Zero A

Cal

Power Meter Operation

Making Measurements with the HP 8480 Series Power Sensors

6. The current setting of the reference calibration factor is displayed under the softkey. To change this setting press

A Ref CF

. The power meter displays the reference calibration factor in a pop up window. Modify this reference calibration factor (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

7. To conﬁrm your choice press .

8. Press , to calibrate the power meter. During

Cal Cal A

calibration the wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

9. Press . The current setting of the calibration factor is displayed under the softkey. To change this setting press . The power meter displays the calibration

Frequency Cal Fac

A Cal Fac

factor in a pop up window. Modify this calibration factor (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

10. To conﬁrm your choice press .

11. Connect the power sensor to the signal to be measured.

12. You must set the display to the type of measurement you require. This can either be a direct channel measurement, a ratio measurement of both channels, or a difference measurement between both channels. Use the following key presses: Press , . Select the appropriate softkey for the measurement you require, either , , , , or , then , or .

Meas Setup

Input Select

A-B B-A

A B A/B B/A

13. The measurement result is now displayed.

Example

To make a measurement on channel A with a power sensor which has a reference calibration factor of 99.8% and a calibration factor of 97.8% at the measurement frequency.

• Disconnect the power sensor from any source.

• Press .

Zero Cal

Zero A Cal

HP E4419B User’s Guide 2-19

Power Meter Operation

Making Measurements with the HP 8480 Series Power Sensors

• Press . Use the,, and hardkeys to

A Ref CF

enter 99.8. Press .

• Connect the power sensor to the POWER REF output.

• Press .

• Press , . Use the , , and

Cal A

Frequency Cal Fac

hardkeys to enter 97.8. Press .

A Cal Fac

• Connect the power sensor to the signal to be measured.

• The measurement result is now displayed.

2-20 HP E4419B User’s Guide

Power Meter Operation

Making Measurements using Sensor Calibration Tables

This section applies to all HP 8480 series power sensors. It does not apply to the HP E-series power sensors.

For the HP 8480 series power sensors there are two methods of providing correction data to the power meter:

A inputting the individual calibration factor for a frequency prior to

making the measurement, or

B using sensor calibration tables.

This section describes how to use sensor calibration tables. Sensor calibration tables are used to store the measurement calibration factors, supplied with each power sensor, in the power meter. These calibration factors are used to correct measurement results.

Using sensor calibration tables provides you with a quick and convenient method for making power measurements over a range of frequencies using one or more power sensors. The power meter is capable of storing 20 sensor calibration tables of 80 frequency points each.

To use sensor calibration tables you:

1. Select the table to work on a channel. Refer to “Selecting a Sensor Calibration Table”, on page 2-19 for further information. If you require to edit the table refer to “Editing Sensor Calibration Tables”, on page 2-21 for further information.

2. Zero and calibrate the power meter. The reference calibration factor used during the calibration is automatically set by the power meter from the sensor calibration table.

3. Specify the frequency of the signal you want to measure. The calibration factor is automatically set by the power meter from the sensor calibration table. Refer to “Making the Measurement”, on page 2-20 for further information.

4. Make the measurement.

Selecting a Sensor Calibration Table

You can select a sensor calibration table for use by pressing ,

Tables Sensor Cal Tables A Table Off On

B Table Off On

HP E4419B User’s Guide 2-21

, , or

. The “State” ﬁeld indicates if any sensor calibration

System Inputs

Power Meter Operation

Making Measurements using Sensor Calibration Tables

tables are currently selected. The “Sensor Tbls” screen is displayed as shown in Figure 2-4.

Figure 2-4: “Sensor Tbls” Screen

Making the Measurement

To make the power measurement, you zero and calibrate the power meter, then set it for the frequency of the signal you want to measure. The power meter automatically selects the calibration factor from the sensor calibration table.

Note The following procedure details the calibration for channel A. To

calibrate channel B use the same procedure using the equivalent channel B softkeys. To calibrate both channels, zero the power meter using in step “2”, then follow this procedure for

Zero Both

channel A then repeat step “3” through to step “9” using the equivalent channel B softkeys.

1. Press .

2. Press . During zeroing, which takes approximately 10

Zero Cal

Zero A

seconds, the wait symbol is displayed.

3. Press . The setting of the reference calibration factor is

Cal

obtained from the sensor calibration table and displayed under the

A Ref CF

softkey.

4. Connect the power sensor to the POWER REF output.

5. Press to calibrate the power meter. During calibration the

Cal A

wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

2-22 HP E4419B User’s Guide

Power Meter Operation

Making Measurements using Sensor Calibration Tables

6. Press . The current setting of the frequency is displayed under the softkey.

7. To change this setting press . The power meter displays

Frequency Cal Fac

A Freq

the frequency in a pop up window. Modify this frequency (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

8. To conﬁrm your choice press the appropriate frequency unit.

9. Connect the power sensor to the signal to be measured.

10. You must set the display to the type of measurement you require. This can either be a direct channel measurement, a ratio measurement of both channels, or a difference measurement between both channels. Use the following key presses: Press , . Select the appropriate softkey for the measurement you require, either , , , , or , then , or .

Meas Setup

Input Select

A-B B-A

A B A/B B/A

11. The measurement result is now displayed.

Note If the measurement frequency does not correspond directly to a

frequency in the sensor calibration table, the power meter calculates the calibration factor using linear interpolation.

If you enter a frequency outside the frequency range deﬁned in the sensor calibration table, the power meter uses the highest or lowest frequency point in the sensor calibration table to set the calibration factor.

The value of the calibration factors being used by the power meter to make a measurement is displayed under the or

B Cal Fac

softkeys.

A Cal Fac

Editing Sensor Calibration Tables

You can edit sensor calibration tables using the “Edit Cal” menu as shown in Figure 2-5.

To view the sensor calibration tables currently stored in the power meter, press , , . The “Sensr Tbls” screen is displayed as shown in Figure 2-4.

HP E4419B User’s Guide 2-23

System Inputs

Tables Sensor Cal Tables

Power Meter Operation

Making Measurements using Sensor Calibration Tables

Figure 2-5: “Edit Cal” Screen

The power meter is shipped with a set of predeﬁned sensor calibration tables. The data in these tables is based on statistical averages for a range of Hewlett-Packard power sensors.

These power sensors are:

• DEFAULT

• HP 8481A

• HP 8482A

• HP 8483A

• HP 8481D

• HP 8485A

• R8486A

• Q8486A

• R8486D

• HP 8487A

1. DEFAULT is a sensor calibration table in which the reference calibration factor and calibration factors are 100%. This sensor calibration table can be used during the performance testing of the power meter.

2. The HP 8482B and HP 8482H power sensors use the same data as the HP 8482A.

2-24 HP E4419B User’s Guide

Power Meter Operation

Making Measurements using Sensor Calibration Tables

There are also ten sensor calibration tables named CUSTOM_0 through CUSTOM_9 which do not contain any data when the power meter is shipped from the factory.

You cannot delete any of the 20 sensor calibration tables. Each sensor calibration table can contain a maximum of 80 frequency points each. If you want a new sensor calibration table you must edit an existing one.

To edit a table:

1. Select one using the and hardkeys to scroll through the displayed tables. When the table you want to edit is highlighted

Edit Table

press . The “Edit Cal” screen is displayed as shown in Figure 2-5 on page 2-21. In this screen you can modify, add and remove frequency and calibration factors and also edit the table name. Use the , , and hardkeys to move between the table name and its frequency and calibration factors.

A frequency in the range of 0.001 MHz to 999.999 GHz can be entered.

A calibration factor in the range of 1% to 150% can be entered. The following rules apply to naming sensor calibration tables:

■ The name must consist of no more than 12 characters.

■ All characters must be upper or lower case alphabetic

characters, or numeric (0-9), or an underscore (_).

■ No other characters are allowed.

■ No spaces are allowed in the name.

2. To edit the parameter you currently have selected press .

Change

The power meter displays the data in a pop up window. Modify this data (see below) as desired.

■ Use or to modify the character on which the cursor

is currently positioned.

■ Use or to move to other characters.

3. To conﬁrm your choice press the appropriate softkey.

4. To add a new sensor calibration table entry press . You are

Insert

prompted for the frequency and calibration factor. The entry is sorted by frequency.

5. To remove a sensor calibration table entry use the , ,

and hardkeys to select the entry, press . If you

Delete

delete the frequency the equivalent calibration factor is also removed and vice versa.

HP E4419B User’s Guide 2-25

Power Meter Operation

Making Measurements using Sensor Calibration Tables

Note You can only edit the table name you cannot delete it.

6. When you have completed editing the sensor calibration table

Done

press to return to the “Sensor Tbles” screen.

Note Ensure that the frequency points you use cover the frequency

range of the signals you want to measure. If you measure a signal with a frequency outside the frequency range deﬁned in the sensor calibration table, the power meter uses the highest or lowest frequency point in the sensor calibration table to calculate the calibration factor.

2-26 HP E4419B User’s Guide

Power Meter Operation

Making Measurements using Sensor Calibration Tables

The following lists detail the contents of the predeﬁned sensor calibration tables.

DEFAULT HP 8482A

RCF 100 RCF 98

0.1 MHz 100 0.1 MHz 98

110 GHz 100 0.3 MHz 99.5

HP 8481A 1 MHz 99.3

RCF 100 3 MHz 98.5

50 MHz 100 10 MHz 98.5

100 MHz 99.8 30 MHz 98.1

2 GHz 99 100 MHz 97.6 3 GHz 98.6 300 MHz 97.5 4 GHz 98 1 GHz 97 5 GHz 97.7 2 GHz 95 6 GHz 97.4 3 GHz 93 7 GHz 97.1 4.2 GHz 91 8 GHz 96.6 HP 8483A

9 GHz 96.2 RCF 94.6 10 GHz 95.4 0.1 MHz 94 11 GHz 94.9 0.3 MHz 97.9

12.4 GHz 94.3 1 MHz 98.4 13 GHz 94.3 3 MHz 98.4 14 GHz 93.2 10 MHz 99.3 15 GHz 93 30 MHz 98.7 16 GHz 93 100 MHz 97.8 17 GHz 92.7 300 MHz 97.5 18 GHz 91.8 1 GHz 97.2

2 GHz 96.4

HP E4419B User’s Guide 2-27

Power Meter Operation

Making Measurements using Sensor Calibration Tables

HP 8481D HP 8485A

RCF 99 RCF 100

50 MHz 99 50 MHz 100

500 MHz 99.5 2 GHz 99.5

1 GHz 99.4 4 GHz 98.9 2 GHz 99.5 6 GHz 98.5 3 GHz 98.6 8 GHz 98.3 4 GHz 98.6 10 GHz 98.1 5 GHz 98.5 11 GHz 97.8 6 GHz 98.5 12 GHz 97.6 7 GHz 98.6 12.4 GHz 97.6 8 GHz 98.7 14 GHz 97.4

9 GHz 99.5 16 GHz 97 10 GHz 98.6 17 GHz 96.7 11 GHz 98.7 18 GHz 96.6 12 GHz 99 19 GHz 96

12.4 GHz 99.1 20 GHz 96.1 13 GHz 98.9 21 GHz 96.2 14 GHz 99.4 22 GHz 95.3 15 GHz 98.9 23 GHz 94.9 16 GHz 99.1 24 GHz 94.3 17 GHz 98.4 25 GHz 92.4 18 GHz 100.1 26 GHz 92.2

R8486A 26.5 GHz 92.1

RCF 100 R8486D

50 MHz 100 RCF 97.6

26.5 GHz 94.9 50 MHz 97.6 27 GHz 94.9 26.5 GHz 97.1 28 GHz 95.4 27 GHz 95.3 29 GHz 94.3 28 GHz 94.2 30 GHz 94.1 29 GHz 94.5 31 GHz 93.5 30 GHz 96.6 32 GHz 93.7 31 GHz 97.6 33 GHz 93.7 32 GHz 98 34 GHz 94.9 33 GHz 98.9

34.5 GHz 94.5 34 GHz 99.5 35 GHz 94.4 34.5 GHz 99 36 GHz 93.7 35 GHz 97.6 37 GHz 94.9 36 GHz 99 38 GHz 93.5 37 GHz 98.2 39 GHz 93.9 38 GHz 97.4 40 GHz 92.3 39 GHz 97.6

40 GHz 100

2-28 HP E4419B User’s Guide

Power Meter Operation

Making Measurements using Sensor Calibration Tables

HP 8487A HP 8487A continued

RCF 100 37 GHz 92.4

50 MHz 100 38 GHz 90.9 100 MHz 99.9 39 GHz 91.3 500 MHz 98.6 40 GHz 91.4

1 GHz 99.8 41 GHz 90.6 2 GHz 99.5 42 GHz 89.9 3 GHz 98.9 43 GHz 89.1 4 GHz 98.8 44 GHz 88.1 5 GHz 98.6 45 GHz 86.9 6 GHz 98.5 46 GHz 85.8 7 GHz 98.4 47 GHz 85.4 8 GHz 98.3 48 GHz 83.2

9 GHz 98.3 49 GHz 81.6 10 GHz 98.3 50 GHz 80.2 11 GHz 98.1 Q8486A 12 GHz 97.9 RCF 100 13 GHz 98 50 MHz 100 14 GHz 98.2 33.5 GHz 91.3 15 GHz 97.7 34.5 GHz 92 16 GHz 96.8 35 GHz 91.7 17 GHz 97 36 GHz 91.5 18 GHz 96.3 37 GHz 92.1 19 GHz 95.9 38 GHz 91.7 20 GHz 21 GHz 95.6 40 GHz 90.7 22 GHz 95.5 41 GHz 90.3 23 GHz 95.4 42 GHz 89.5 24 GHz 95 43 GHz 88.5 25 GHz 95.4 44 GHz 88.7 26 GHz 95.2 45 GHz 88.2 27 GHz 95.1 46 GHz 87 28 GHz 95 47 GHz 86.4 29 GHz 94.4 48 GHz 85.3 30 GHz 94 49 GHz 84.7 31 GHz 93.7 50 GHz 82.9 32 GHz 93.8 33 GHz 93 34 GHz 93.2

34.5 GHz 93.5 35 GHz 93.1 36 GHz 92

95.2

39 GHz 91

HP E4419B User’s Guide 2-29

Power Meter Operation

Making Measurements using Frequency Dependent Offset Tables

This section describes how to use frequency dependent offset tables.

Frequency dependent offset tables provide you with a quick and convenient method of compensating for your external test setup over a range of frequencies. Note that when selected, frequency dependent offset correction is IN ADDITION to any correction applied for sensor frequency response.

The power meter is capable of storing 10 frequency dependent offset tables of 80 frequency points each.

To use frequency dependent offset tables you:

1. Select the table to work on a channel. Refer to “Selecting a Frequency Dependent Offset Table”, on page 2-27 for further information. If you require to edit the table refer to “Editing Frequency Dependent Offset Tables”, on page 2-29 for further information.

2. Zero and calibrate the power meter. The reference calibration factor used during the calibration is automatically set by the power meter from the sensor calibration table (if selected).

3. Specify the frequency of the signal you want to measure. The calibration factor/offset is automatically set by the power meter from the sensor calibration table (if selected) and the frequency dependent offset table. Refer to “Making the Measurement”, on page 2-28 for further information.

4. Make the measurement.

Selecting a Frequency Dependent Offset Table

You can select a frequency dependent offset table for use by pressing

System Inputs

B Table Off On

dependent offset tables are currently selected. The “Offset Tbls” screen is displayed as shown in Figure 2-6.

2-30 HP E4419B User’s Guide

Tables Freq Dep Offset A Table Off On

,, , or

. The “State” ﬁeld indicates if any frequency

Power Meter Operation

Making Measurements using Frequency Dependent Offset Tables

Figure 2-6: “Offset Tbls” Screen

Making the Measurement

Note The following procedure details the calibration for channel A. To

calibrate channel B use the same procedure using the equivalent channel B softkeys. To calibrate both channels, zero the power meter using in step “2”, then follow this procedure for

Zero Both

channel A then repeat step “3”through to step “9”using the equivalent channel B softkeys.

1. Press .

2. Press . During zeroing, which takes approximately 10

Zero Cal

Zero A

seconds, the wait symbol is displayed.

3. Press . The setting of the reference calibration factor is

Cal

obtained from the sensor calibration table (if selected) and displayed under the softkey.

A Ref CF

4. Connect the power sensor to the POWER REF output.

5. Press to calibrate the power meter. During calibration the

Cal A

wait symbol is displayed. (The power meter automatically turns on the POWER REF output.)

HP E4419B User’s Guide 2-31

Power Meter Operation

Making Measurements using Frequency Dependent Offset Tables

6. Press . The current setting of the frequency is displayed under the softkey.

7. To change this setting press . The power meter displays

Frequency Cal Fac

A Freq

the frequency in a pop up window. Modify this frequency (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

8. To conﬁrm your choice press the appropriate frequency unit.

9. Connect the power sensor to the signal to be measured.

Meas Setup

Input Select

A-B B-A

A B A/B B/A

11. The measurement result is now displayed.

Note If the measurement frequency does not correspond directly to a

frequency in the sensor calibration table (if selected) and the frequency dependent offset table being used, the power meter calculates the calibration factor and offset using linear interpolation.

If you enter a frequency outside the frequency range deﬁned in the sensor calibration table or the frequency dependent offset table, the power meter uses the highest or lowest frequency point in the appropriate table to set the calibration factor and offset.

The value of the calibration factors being used by the power meter to make a measurement is displayed under the or

B Cal Fac

softkeys.

A Cal Fac

Editing Frequency Dependent Offset Tables

You can edit frequency dependent offset tables using the “Edit” menu as shown in Figure 2-7.

2-32 HP E4419B User’s Guide

Power Meter Operation

Making Measurements using Frequency Dependent Offset Tables

To view the frequency dependent offset tables currently stored in the power meter, press , , . The “Offset

System Inputs

Tables Freq Dep Offset

Tbls” screen is displayed as shown in Figure 2-6.

Figure 2-7: “Edit” Screen

There are ten frequency dependent offset tables named CUSTOM_A through CUSTOM_J which do not contain any data when the power meter is shiped from the factory.

You cannot delete any of the 10 existing frequency dependent offset tables or create any additional tables. However, you can edit the 10 existing tables. Each frequency dependent offset table can contain a maximum of 80 frequency points.

To edit a table:

1. Select one using the and hardkeys to scroll through the displayed tables. When the table you want to edit is highlighted

Edit Table

press . The “Edit Offset” screen is displayed as shown in Figure 2-7 on page 2-29. In this screen you can modify, add and remove frequencies and offset and also edit the table name. Use the , , and hardkeys to move between the table name and its frequencies and offsets.

A frequency in the range of 0.001 MHz to 999.999 GHz can be entered.

An offset in the range of 1% to 150% can be entered. The following rules apply to naming frequency dependent offset

tables:

■ The name must consist of no more than 12 characters.

HP E4419B User’s Guide 2-33

Power Meter Operation

Making Measurements using Frequency Dependent Offset Tables

■ All characters must be upper or lower case alphabetic

characters, or numeric (0-9), or an underscore (_).

■ No other characters are allowed.

■ No spaces are allowed in the name.

2. To edit the parameter you currently have selected press . The power meter displays the data in a pop up window. Modify this data (see below) as desired.

■ Use or to modify the character on which the cursor

is currently positioned.

■ Use or to move to other characters.

3. To conﬁrm your choice press the appropriate softkey.

4. To adda new frequency dependent offset table entry, press

Insert

. You are prompted for the frequency and offset. The entry

is sorted by frequency.

5. To remove a frequency dependent offset table entry, use the ,

, and hardkeys to select the entry, press . If

Delete

you delete the frequency the equivalent offset is also removed and vice versa.

Change

Note You can only edit the table name you cannot delete it.

6. When you have completed editing the frequency dependent offset table, press to return to the “Offset Tbls” screen.

Done

Note Ensure that the frequency points you use cover the frequency

range of the signals you want to measure. If you measure a signal with a frequency outside the frequency range deﬁned in the frequency dependent offset table, the power meter uses the highest or lowest frequency point in the frequency dependent offset table to calculate the offset.

2-34 HP E4419B User’s Guide

Power Meter Operation

Setting the Units of Measurement

The “dBm/W” menu is used to select the measurement units on the currently selected window. These can either be logarithmic (dBm or dB) or linear (Watt or %) units. sets the measurement units to dBm (logarithmic units). Table 2-5 shows which units are applicable to the individual measurement modes.

Press , then select the unit of measurement from , , or

dBm/W

. Softkeys which cannot be selected in your particular mode of operation

appear with their text grayed out.

Note When the unit of measurement is set to Watt, it is possible that

negative power measurements may be displayed when measuring low power levels.

Table 2-5: Measurement Units

Preset Local

dBm W dB

Measurement

Mode

Relative Mode Off Relative Mode On

Linear Log Linear Log

Single Channel Watt dBm % dB

Ratio % dB % dB

Difference Watt dBm % dB

1. When relative mode is on (that is, , is “On”), the measurement is compared to a reference value.

Rel Offset

Rel Off On

HP E4419B User’s Guide 2-35

Power Meter Operation

Selecting Units of Measurement from the Softkeys

In various softkey menu structures you are required to enter the units of measurement for power. In some cases, due to the wide power range available, the following menu is displayed:

µW

Cancel

Increment

Multiplier Decrement

Multiplier

Cancel

Note Some softkeys may be grayed out so that an invalid value cannot

be entered.

Pressing or increases or decreases the multiplier shown in front of . Pressing

Increment Multiplier Decrement Multiplier

W W

after the correct multiplier has been selected conﬁrms the entry.

2-36 HP E4419B User’s Guide

Power Meter Operation

Making Relative Measurements

Relative mode allows you to compare any measurement result to a reference value. The relative reading can be displayed in either dB or % by pressing and selecting either or . When the measurement result is displayed in % a preﬁx multiplier may be shown.

Relative mode is window dependent and when enabled displays “Rel” in the window to which it’s applied.

Procedure

To set a reference value on the currently selected window:

dBm/W

1. Press .

2. Press to use the current reading as the reference value. This

Rel Offset

Rel

dB %

allows you to compare any measurement result in dB or percentage (%).

Rel Off On Rel

3. is automatically set to “On” when is pressed.

Successive measurements are now displayed relative to the reference value. The relative mode can be disabled and re-enabled simply by pressing .

Rel Off On

HP E4419B User’s Guide 2-37

Power Meter Operation

Setting the Resolution

The resolution of each of the power meter’s windows can be set to four different levels (1, 2, 3 or 4).

These four levels represent:

• 1, 0.1, 0.01, 0.001 dB respectively if the measurement sufﬁx is dBm or dB.

• 1, 2, 3 or 4 signiﬁcant digits respectively if the measurement sufﬁx is W or %.

The default value is 0.01 dB (3 digits).

To set the resolution on the currently selected window:

1. Press . The current setting of the resolution is highlighted on the softkey.

2. To change this setting press until the required resolution setting is highlighted.

Meas Setup

Resolution 1 2 3 4

2-38 HP E4419B User’s Guide

Power Meter Operation

Setting Offsets

Setting Channel Offsets

The power meter can be conﬁgured to compensate for a signal loss or gain in your test setup (for example, to compensate for the loss of a 10 dB attenuator). This gain or loss, referred to as a channel offset, is added to the measured power before the result is displayed.

Offsets are entered in dB. The allowable range of values is -100 dB to +100 dB. A positive value compensates for a loss, and a negative value compensates for a gain.

If either a channel or a display offset is set then “Ofs” is displayed.

To enter a channel offset which compensates for a loss or gain:

1. Press .

2. Press or depending on the channel which you want to apply offsets to.

3. Press . The power meter displays the offset value in a pop up window. Modify this offset (see below) as desired.

■ Use or to modify the digit on which the cursor is

■ Use or to move to other digits.

4. To conﬁrm your choice press .

Offset Off On

5. is automatically set to “On” when a value is entered using .

System Inputs

A Input Settings B Input Settings

Offset

currently positioned.

Offset

Channel offsets can be disabled and re-enabled simply by pressing

Offset Off On

Setting Display Offsets

The display offset function provides a method for entering display offset values.

If either a channel or a display offset is set then “Ofs” is displayed.

To enter a display offset on the currently selected window:

1. Press , .

Rel Offset

HP E4419B User’s Guide 2-39

Offset

Power Meter Operation

Setting Offsets

2. The power meter displays the offset value in a pop up window. Modify this offset (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

3. To conﬁrm your choice press .

Offset Off On

4. is automatically set to “On” when a value is entered using .

Offset

Display offsets can be disabled and re-enabled simply by pressing

Offset Off On

The display offset is a function of the window. That is, if you have selected a two window display each can have its own offset.

Figure 2-8 and Figure 2-9 display the effects of the channel and display offsets on the power meter’s displayed reading.

Figure 2-8: Effect of Offsets on a Channel Measurement

ChA Input

ChB Input

ChA Offset

ChB Offset

ChA Input with Ch Offset

†

ChB Input with Ch Offset

† Channel Offset entered using , or

B Input Settings Offset

†† Display Offset entered using ,.

Ch Input

Ch Offset

†

Ch Input with

Ch Offset

Display Offset

Ch Input with Ch Offset and

Display Offset

††

Figure 2-9: Effect of Offsets on a Maths Measurement

Result with

Math, A, B, A-B, B-A, A/B, B/A,

, .

Result

Display Offset

System Inputs

Rel Offset

Display Offset Applied

††

A Input Settings

Offset

READING ON POWER METER DISPLAY

2-40 HP E4419B User’s Guide

Power Meter Operation

Setting Averaging

The power meter uses a digital ﬁlter to average power readings. The number of readings averaged can range from 1 to 1024. This ﬁlter is used to reduce noise, obtain the desired resolution and to reduce the jitter in the measurement results. Increasing the value of the ﬁlter length reduces measurement noise. However, the time to take the measurement is increased. You can select the ﬁlter length or you can set the power meter to auto ﬁlter mode. The default is “AUTO”.

When the auto ﬁlter mode is enabled, the power meter automatically sets the number of readings averaged together to satisfy the ﬁltering requirements for most power measurements. The number of readings averaged together depends on the resolution and the power level currently being measured. Figure 2-9 lists the number of readings averaged for each range and resolution when the power meter is in auto ﬁlter mode and is set to normal speed mode (refer to the HP E4418B/E4419B Programming Guide for details of the readings averaged in the other speed modes).

Resolution is a window function and not a channel function. In the case where a channel is set up in both the upper and lower window and the resolution settings are different, the highest resolution setting is taken to calculate the averaging number. For example, if the upper window has a resolution setting of 2 and is measuring channel A - channel B and the lower window has a resolution of 4 and is measuring channel A. In this instance channel A averaging is calculated with a resolution of 4 and channel B with a resolution of 2.

HP E4419B User’s Guide 2-41

Power Meter Operation

Setting Averaging

Figure 2-10: Averaged Readings

Minimum Sensor Power

10 dB

Power Sensor

10 dB

Dynamic Range

1234

1 8 128 128

1 1 16 256

11232

11116

1118

Maximum Sensor Power

These four resolution levels represent:

• 1, 0.1, 0.01, 0.001 dB respectively if the measurement sufﬁx is dBm or dB.

• 1, 2, 3 or 4 signiﬁcant digits respectively if the measurement sufﬁx is W or %.

Note The following procedure details how to set the averaging for

channel A. To set the averaging on channel B use the same

Resolution Setting

procedure using the softkey.

B Input Settings

Number of Averages

To set averaging:

1. Press , , . Press the

System Inputs

ChA Filter

A Input Settings

softkey to access the ﬁlter menu.

2. The current setting of averaging is displayed under the softkey. To change this setting press . A pop up window

Length

appears. Use the , , or keys to set your ﬁlter length.

3. To conﬁrm your choice press .

Enter

The ﬁlter can be disabled and re-enabled simply by pressing

Filter Off On

2-42 HP E4419B User’s Guide

Power Meter Operation

Setting Averaging

Step Detection

To reduce the ﬁlter settling time after a signiﬁcant step in the measured power the ﬁlter can be set to re-initialise upon detection of a step increase/decrease in the measured power. Step detection can be set in both manual and automatic ﬁlter modes.

To set step detection for channel A:

1. Press , , .

System Inputs

2. Press the softkey to access the ﬁlter menu.

3. Use the softkey to enable /disable step

Step Det Off On

A Input Settings

ChA Filter

detection.

For channel B use the steps above except use and

ChB Filter

B Input Settings

HP E4419B User’s Guide 2-43

Power Meter Operation

Measuring Pulsed Signals

The power meter can be used to measure the power of a pulsed signal. The measurement result is a mathematical representation of the pulse power rather than an actual measurement (assumes constant peak power). The power meter measures the average power of the pulsed input signal and then divides the measurement result by the duty cycle value to obtain the pulse power reading. The allowable range of values is 0.001 % to 100 %. The default value is 1.000%.

If duty cycle is enabled then “Dty Cyc” is displayed.

Note Pulse measurements are not recommended using HP E4412A and

E4413A power sensors.

An example of a pulsed signal is shown in Figure 2-10.

Figure 2-11: Pulsed Signal

Power

Duty Cycle = A

Time

2-44 HP E4419B User’s Guide

Power Meter Operation

Measuring Pulsed Signals

To set the duty cycle:

1. Press , , . The current setting

System Inputs

A Input Settings

of the duty cycle is displayed under the softkey.

2. To change this setting press . The power meter

Duty Cycle

displays the duty cycle in a pop up window. Modify this value (see below) until the desired duty cycle is displayed.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

3. To conﬁrm your choice press .

Duty Cycle Off On

4. is automatically set to “On” when a value

is entered using .

Duty Cycle

Duty cycle can be disabled and re-enabled simply by pressing

Duty Cycle Off On

Note Pulse power averages out any aberrations in the pulse such as

overshooting or ringing. For this reason it is called pulse power and not peak power or peak pulse power.

In order to ensure accurate pulse power readings, the input signal must be pulsed with a rectangular pulse. Other pulse shapes (such as triangle, chirp or Gaussian) will cause erroneous results.

The pulse power on/off ratio must be much greater than the duty cycle ratio.

HP E4419B User’s Guide 2-45

Power Meter Operation

Setting Measurement Limits

You can conﬁgure the power meter to detect when a measurement is outwith a predeﬁned upper and/or lower limit value.

There are two types of measurement limits you can set:

• Channel Limits - are applied to the speciﬁed input channel and are for power measurements only.

• Window Limits - are windows based (upper and lower) and can be applied to power, ratio or difference measurements. In addition, the window based limits can be set to output a TTL logic level at the rear panel Rmt I/O port when the predeﬁned limits are exceeded.

Note Only one set of limits can be on at a time, that is, Channel OR

Window.

Setting Channel Limits

The power meter can be conﬁgured to verify the power being measured against an upper and/or lower limit value. The range of values that can be set for upper and lower limits is -150 dBm to 230 dBm. The default upper limit is 90.00 dBm and the default lower limit is -90.00 dBm.

To set the limits:

1. Press , , . The current

System Inputs

setting of the maximum and minimum limits are displayed under

Max Min

the and softkeys respectively.

2. To change either of these settings press the appropriate softkey. The power meter displays the current value in a pop up window. Modify this value (see below) until the desired value is displayed.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

3. To conﬁrm your choice press the appropriate measurement units.

Limits can be disabled and re-enabled simply by pressing

Limits Off On

A typical application for this feature is shown in Figure 2-11.

A Input Settings Limits

2-46 HP E4419B User’s Guide

Power Meter Operation

Setting Measurement Limits

Figure 2-12: Limits Checking Application

Power Meter

Swept Source

Amplitude

+10 dBm

+4 dBm

Device Under Test

OUT

Figure 2-13: Limits Checking Results

Fail o

o Fail

Frequency

CHANNEL A INPUT

In this application a swept frequency signal is applied to the input of the Device Under Test. The power meter measures the output power. The limits have been set at +4 dBm and +10 dBm. A fail occurs each time the output power is outside these limits as shown in Figure 2-12.

Setting Window Limits

The power meter can be conﬁgured to verify the current measurement in either window against predeﬁned upper and/or lower limit values. The range of values that can be set for the upper and lower limits and the

HP E4419B User’s Guide 2-47

Power Meter Operation

Setting Measurement Limits

default values depends on the measurement units in the currently selected window - see Table 2-6.

Table 2-6: Range of Values for Window Limits

Window

Units

Max Min

Default

Max Min

dB +200 dB -180 dB 60 dB -120 dB

dBm +230 dBm -150 dBm 90 dBm -90 dBm

% 999.9 X% 100.0 a% 100.0 M% 100.0 p%

W 100.000 XW 1.000 aW 1.000 MW 1.000 pW

The window based limits can also be set to output a TTL logic level at the rear panel Rmt I/O port when the predeﬁned limits are exceeded. You can switch the rear panel TTL outputs on or off; set the TTL output level to active high or low; and determine whether the TTL output represents an over limit condition, under limit condition or both.

The TTL connector is an RJ-45 series shielded modular jack assembly with the TTL output pins connected as shown in Figure 2-13.

2-48 HP E4419B User’s Guide

1 2 3 4 5 6 7 8

Power Meter Operation

Setting Measurement Limits

Figure 2-14: Remote I/O TTL Outputs

Pin Number Connection

1 none 2 Ground 3 Upper Window TTL Output 4 Lower Window TTL Output 5 TTL Input 1 6 TTL Input 2 7 Ground 8 Ground

To set the limits:

1. Press , . The current setting of the maximum and

Meas Setup

minimum limits are displayed under the and softkeys

Limits

Max Min

respectively.

2. To change either of these settings press the appropriate softkey. The power meter displays the current value in a pop up window. Modify this value (see below) until the desired value is displayed.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

3. To conﬁrm your choice press the appropriate measurement units.

Limits can be disabled and re-enabled simply by pressing

Limits Off On

HP E4419B User’s Guide 2-49

Power Meter Operation

Setting Measurement Limits

To set the TTL Output:

1. Press , , . The current settings for the

Meas Setup

TTL Output are displayed under the , and

Fail O/P

Limits TTL Output

TTL Output Limits

softkeys.

2. To select whether the TTL output reﬂects an overlimit condition, under limit condition or both, press . Use any of the four arrow keys to make a selection between , , and

EITHER

on the pop up menu that appears.

Limits

OVER UNDER

3. To select whether a high or low level TTL output represents a limits failure, use the softkey to toggle between

Low

and

Fail O/P High

TTL Outputs can be disabled and re-enabled simply by pressing

TTL Output Off On

Checking for Limit Failures

Limit failures are displayed in the appropriate ﬁeld in the measurement window on the power meter’s display as shown in Figure 2-14.

Note The same limit fail ﬁeld is used by both channel and window

limits.

2-50 HP E4419B User’s Guide

Power Meter Operation

Setting Measurement Limits

Figure 2-15: Pass/Fail Limit Indicators

measurement has

passed which is indicated by the limit field being

measurement has

failed as the result

is less than the minimum limit

-60 dBm. This is

indicated with the

text “Undr Lmt”.

This

empty.

This

level set of

This

measurement has

failed as the

result is more

than the

maximum limit

level set of

-65 dBm. This is

indicated with the

text “Over Lmt”.

HP E4419B User’s Guide 2-51

Power Meter Operation

Channel Measurements

Single channel measurements can be made on the currently selected window by pressing , and selecting or .

Meas Setup

Input Select A B

Absolute power is displayed for the selected channel in either dBm or Watts. The ﬁlter, range (where applicable), offset, duty cycle, calibration factor and limits can be set for the selected channel.

Single channel measurements can be displayed relative to a stored reference. In relative mode readings are displayed in either dB or %. Refer to “Making Relative Measurements”, on page 2-37 for further information.

2-52 HP E4419B User’s Guide

Making Difference Measurements

Power Meter Operation

Dual channel difference measurements can be made on the currently selected window by pressing , , and selecting

A-B B-A

or . The power meter always carries out “Maths” calculations in

Meas Setup

Input Select

Watts. The power meter displays the numerical difference of the power values of both channels in dBm or Watts. The power value for each channel includes offsets, calibration factors and duty cycle in addition to measured power. The ﬁlter, range (where applicable), offset, duty cycle and calibration factor are set individually for each channel.

Logarithmic units (dBm) can be used in A-B difference measurements where the channel A power level is less than the channel B power level. Likewise, logarithmic units can be used in B-A difference measurements where the channel B power level is less than the channel A power level. However, the negative sign is ignored and a log error is displayed on the status line and in the error queue.

Difference measurements can be displayed relative to a stored reference. In relative mode readings are displayed in either dB or %. Refer to “Making Relative Measurements”, on page 2-37 for further information.

HP E4419B User’s Guide 2-53

Power Meter Operation

Making Ratio Measurements

Dual channel ratio measurements can be made on the currently selected window by pressing , and selecting or .

Meas Setup

Input Select A/B B/A

The power meter always carries out “Maths” calculations in Watts. The power meter displays the ratio of the channels power values in either dB or %. When the measurement result is displayed in % a preﬁx multiplier may be shown. The power value of each channel includes offsets, calibration factors and duty cycle in addition to measured power. The ﬁlter, range, offset and calibration factor are set individually for each channel.

Ratio measurements can be displayed relative to a stored reference. In relative mode readings are displayed in either dB or %. Refer to “Making Relative Measurements”, on page 2-37 for further information.

2-54 HP E4419B User’s Guide

Power Meter Operation

Selecting a Digital or Analog Display

The measurement windows can display the result in either a digital or analog format or both as shown in the following ﬁgures.

Figure 2-16: Digital Display

Figure 2-17: Analog Display

Figure 2-18: Digital and Analog Display

HP E4419B User’s Guide 2-55

Power Meter Operation

Selecting a Digital or Analog Display

To select the format of the display in the currently selected window:

1. Press , .

2. Press to highlight the type of format you

Meas Setup

Meter Dgtl Anlg

Display Format

require. Pressing this key toggles between a digital and analog display.

To select the range of the analog display in the currently selected window:

1. Press , , .

Meas Setup

Display Format Anlg Mtr Scaling

2. The current setting of the maximum and minimum values displayed on the analog meter are displayed under the and

Min

softkeys respectively.

Max

3. To change either of these settings press the appropriate softkey. The power meter displays the current value in a pop up window. Modify this value (see below) until the desired value is displayed.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

4. The choices available depend on the unit of measurement selected and the current measurement mode. If the measurement unit selected is logarithmic, then the choice will be or . If the

dB dB

measurement unit selected is linear, then choose the appropriate softkeys from the following menus:

Cancel

Increment

Pressing or

Decrement Multiplier

Multiplier Decrement

Multiplier Cancel

Increment Multiplier

increases or decreases the multiplier

µW

Cancel

Increment Multiplier

Decrement Multiplier

Cancel

2-56 HP E4419B User’s Guide

Power Meter Operation

Selecting a Digital or Analog Display

shown in front of or . Pressing or after the correct

% W % W

multiplier has been selected conﬁrms the entry.

To select both an analog and digital display press until two windows are displayed. Select the format of one window to analog and the other to digital as previously described.

To indicate if the measurement reading is outwith the minimum or maximum values set for the analog meter, a warning message is displayed. The analog meter also displays a digital reading. This digital reading allows you to easily set the appropriate minimum and maximum values for the analog display.

Note The analog display does not indicate as much measurement data

as the digital display. That is, it does not indicate when duty cycle, range hold, offset or relative mode are enabled. In addition, it does not indicate if the measurement is within the test limits if any are set.

HP E4419B User’s Guide 2-57

Power Meter Operation

Setting the Range

The power meter has no internal ranges which can be set. The only ranges that can be set are those of the HP E-series power sensors. With an HP E-series power sensor the range can be set either automatically or manually. Use autoranging when you are not sure of the power level you will be measuring. There are two manual settings either “LOWER” or “UPPER”. The lower range is more sensitive than the higher range. “LOWER” covers the range of -70 dBm to -13.5 dBm. “UPPER” covers the range of -14.5 dBm to +20 dBm. The default is “AUTO”.

Note The following procedure details how to set the range for channel

A. To set the range on channel B use the same procedure using the

B Input Settings

To set the range:

1. Press , . The current setting of the

System Inputs

range is displayed under the softkey.

2. To change this setting press . A pop up window appears. Use or to highlight your choice.

3. To conﬁrm your choice press .

softkey.

A Input Settings

Range

Enter

2-58 HP E4419B User’s Guide

Power Meter Operation

Configuring the Remote Interface

Conﬁguring the Remote Interface

This section explains how to conﬁgure the power meter for remote control using either the HP-IB parallel interface or the RS232/422 serial interface. For further information on using the power meter remotely, refer to the HP E4418B/E4419B Programming Guide.

HP-IB

To select HP-IB as the remote interface press ,

Remote Interface Select Interface HPIB

,,(IEEE 488).

HP-IB Address

Each device on the HP-IB (IEEE-488) interface must have a unique address. You can set the power meter’s address to any value between 0 and 30. The address is set to 13 when the power meter is shipped from the factory.

System Inputs

The address is stored in non-volatile memory, and does not change when the power is switched off, or after a remote interface reset.

Your HP-IB bus controller has its own address. Avoid using the bus controller’s address for any instrument on the interface bus. Hewlett-Packard controllers generally use address 21.

To set the HP-IB address from the front panel:

1. Press , , ,

HPIB

System Inputs

. The current setting of the HP-IB address is displayed

under the softkey.

2. To change this setting press . The power meter

Remote Interface Configure Interface

HP-IB Addr

displays the address in a pop up window. Modify this address (see below) as desired.

■ Use or to modify the digit on which the cursor is

currently positioned.

■ Use or to move to other digits.

3. To conﬁrm your choice press .

Enter

To set the HP-IB address from the remote interface use the:

• SYSTem:COMMunicate:GPIB:ADDRess command.

HP E4419B User’s Guide 2-59

Power Meter Operation

Configuring the Remote Interface

RS232/RS422

With RS232 selected as the serial interface the power meter communicates through the serial port with single ended drivers and receivers. With RS422 selsected, the serial port uses balanced drivers and receivers.

The power meter acts as a DTE device.

To select RS232 or RS422 as the remote interface press ,

Remote Interface Select Interface RS232 RS422

, , or .

RS232/422 Connector

The serial port connector is a 9 pin male D-type wired as shown in Figure 2-18.

Figure 2-19: RS232/422 Pin Assignment

System Inputs

Pin RS232 RS422

1 DCD CTS-

2 Rx Rx-

3 Tx Tx+

4 DTR Tx-

5 GND GND

6 DSR Rx+

7 RTS RTS+

8 CTS CTS+

9 RI RTS-

2-60 HP E4419B User’s Guide

Agilent E4419B Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Legal Information

Notice

Warranty

Limitation of Warranty

Exclusive Remedies

Equipment Operation

Personal Safety Considerations

General Safety Considerations

Markings

IEC 1010-1 Compliance

Statement of Compliance

User Environment

Installation Instructions

Regulatory Information

Sound Emission

Australian EMC Regulations

List of Related Publications

Available Accessories

About this Guide

Getting Started

Introduction

Turning On the Power Meter

The Front Panel at a Glance

The Display Layout

Table 1-1

Table 1-2

Selecting Your Display Layout

Display Tutorial

Window Symbols

Warning Symbol

Wait Symbol

1 of N Entry Window

Numeric or Alphanumeric Entry Window

The Rear Panel at a Glance

Adjusting the Carrying Handle

Rack Mounting the Power Meter

Power Meter Operation

Introduction

Battery Operation (Option 001)

General Information

Running Time

Figure 2-1: Battery Status

Charging Times

Backlight

Battery Removal/Replacement

Figure 2-2: Battery Removal/Replacement

Zeroing and Calibrating the Power Meter

Zeroing the Power Meter

Zero/Cal Lockout

Calibrating the Power Meter

Zeroing and Calibrating Using TTL Inputs

Figure 2-3: Rmt I/O Port TTL Inputs

Table 2-2: TTL Inputs Control Logic

Table 2-3: TTL Input Timing Diagram 1

Table 2-4: TTL Inputs Timing Diagram 2

Procedure

Procedure

Selecting a Sensor Calibration Table

Figure 2-4: “Sensor Tbls” Screen

Making the Measurement

Editing Sensor Calibration Tables

Figure 2-5: “Edit Cal” Screen

Selecting a Frequency Dependent Offset Table

Figure 2-6: “Offset Tbls” Screen

Making the Measurement

Editing Frequency Dependent Offset Tables

Figure 2-7: “Edit” Screen

Setting the Units of Measurement

Table 2-5: Measurement Units

Selecting Units of Measurement from the Softkeys

Making Relative Measurements

Procedure

Setting the Resolution

Setting Offsets

Setting Channel Offsets

Setting Display Offsets