Agilent Technologies N1911A Istruzioni operative

Agilent Technologies

Agilent

N1911A/1912A

P-Series Power

Meters

Programming Guide

N1911A/1912A P-Series Power Meters Program-

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

N1912-90008

Edition

Tenth Edition, December 10, 2013

Printed in Malaysia

Agilent Technologies, Inc.

5301 Stevens Creek Blvd.

Santa Clara, CA 95052 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent disclaims all warranties,

either express or implied, with regard

to this manual and any information

contained herein, including but not

limited to the implied warranties of

merchantability and fitness for a par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connec-

tion with the furnishing, use, or per-

formance of this document or of any

information contained herein. Should

Agilent and the user have a separate

written agreement with warranty

terms covering the material in this

document that conflict with these

terms, the warranty terms in the sep-

arate agreement shall control.

Technology Licenses

The hardware and/or software described in

this document are furnished under a license

and may be used or copied only in accor-

dance with the terms of such license.

Restricted Rights Legend

U.S. Government Restricted Rights. Soft-

ware and technical data rights granted to

the federal government include only those

rights customarily provided to end user cus-

tomers. Agilent provides this customary

commercial license in Software and techni-

cal data pursuant to FAR 12.211 (Technical

Data) and 12.212 (Computer Software) and,

for the Department of Defense, DFARS

252.227-7015 (Technical Data - Commercial

Items) and DFARS 227.7202-3 (Rights in

Commercial Computer Software or Com-

puter Software Documentation).

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

Notices

N1911A/1912A P-Series Power Meters Programming Guide iii

General Warranty

The material contained in this document is provided “as is,” and is subject

to being changed, without notice, in future editions. Further, to the

maximum extent permitted by applicable law, Agilent disclaims all

warranties, either express or implied with regard to this manual and any

information contained herein, including but not limited to the implied

warranties of merchantability and fitness for a particular purpose. Agilent

shall not be liable for errors or for incidental or consequential damages in

connection with the furnishing, use, or performance of this document or

any information contained herein. Should Agilent and the user have a

separate written agreement with warranty terms covering the material in

this document that conflict with these terms, the warranty terms in the

separate agreement shall control. Duration and conditions of warranty for

this product may be superseded when the product is integrated into

(becomes a part of) other Agilent products. During the warranty period,

Agilent will, at its option, either repair or replace products which prove to

be defective. The warranty period begins on the date of delivery or on the

date of installation if installed by Agilent.

Restricted Rights Legend

The Software and Documentation have been developed entirely at private

expense. They are delivered and licensed as “commercial computer

software” as defined in DFARS 252.227-7013 (Oct 1988), DFARS

252.211-7015 (May 1991), or DFARS 252.227-7014 (Jun 1995), as a

“commercial item” as defined in FAR 2.101(a), or as “restricted computer

software” as defined in FAR 52.227-19 (Jun 1987) (or any equivalent

agency regulation or contract clause), whichever is applicable. You have

only those rights provided for such Software and Documentation by the

applicable FAR or DFARS clause or the Agilent standard software

agreement for the product involved.

iv N1911A/1912A P-Series Power Meters Programming Guide

Equipment Operation

Warnings and Cautions

This guide uses warnings and cautions to denote hazards.

Personal Safety Considerations

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.

WARNING

A WARNING notice denotes a hazard. It calls attention to an operating

procedure, practice, or the like that, if not correctly performed or

adhered to, could result in personal injury or loss of life. Do not proceed

beyond a WARNING notice until the indicated conditions are fully

understood and met.

CAUTION

A CAUTION notice denotes a hazard. It calls attention to an operating

procedure, practice, or the like that, if not correctly performed or adhered

to, could result in damage to the product or loss of important data. Do not

proceed beyond a CAUTION notice until the indicated conditions are fully

understood and met.

N1911A/1912A P-Series Power Meters Programming Guide v

General Safety Considerations

The following general safety precautions must be observed during all

phases of operation of this instrument. Failure to comply with these

precautions or with specific warnings elsewhere in this manual violates

safety standards of design, manufacture, and intended use of the

instrument. Agilent Technologies, Inc. assumes no liability for the

customer’s failure to comply with these requirements.

User Environment

This instrument is designed for indoor use only.

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.

vi N1911A/1912A P-Series Power Meters Programming Guide

In This Guide…

1Power Meter Remote Operation Chapter 1 describes the parameters

that configure the power meter and helps you determine settings to

optimize performance.

2MEASurement Commands Chapter 2 explains how to use the MEASure

group of instructions to acquire data using a set of high level instructions.

3CALCulate Subsystem Chapter 3 explains how the CALCulate

subsystem is used to perform post acquisition data processing.

4CALibration Subsystem Chapter 4 explains how the CALibration

command subsystem is used to zero and calibrate the power meter.

5DISPlay Subsystem Chapter 5 explains how the DISPlay subsystem is

used to control the selection and presentation of the windows used on the

power meter’s display.

6FORMat Subsystem Chapter 6 explains how the FORMat subsystem is

used to set a data format for transferring numeric information.

7MEMory Subsystem Chapter 7 explains how the MEMory command

subsystem is used to create, edit and review sensor calibration tables.

8OUTput Subsystem Chapter 8 explains how the OUTput command

subsystem is used to switch the POWER REF output on and off.

9PSTatistic Subsystem Chapter 9 explains how the PSTatistic command

subsystem is used to configure the settings of Complementary Cumulative

Distribution Function (CCDF), both in table and trace format.

10 SENSe Subsystem Chapter 10 explains how the SENSe command

subsystem directly affects device specific settings that are used to make

measurements.

11 STATus Subsystem Chapter 11 explains how the STATus command

subsystem enables you to examine the status of the power meter by

monitoring the “Device Status Register”, “Operation Status Register” and

the “Questionable Status Register”.

N1911A/1912A P-Series Power Meters Programming Guide vii

12 SYSTem Subsystem Chapter 12 explains how the SYSTem command

subsystem is used to return error numbers and messages from the power

meter, preset the power meter, set the remote address, and query the SCPI

version.

13 TRACe Subsystem Chapter 13 explains how the TRACe command

subsystem is used to configure and read back the measured power trace.

14 TRIGger Subsystem Chapter 14 explains how the TRIGger command

subsystem is used to synchronize device actions with events.

15 UNIT Subsystem Chapter 15 explains how the UNIT command

subsystem is used to set the power meter measurement units to Watts

and % (linear), or dBm and dB (logarithmic).

16 SERVice Subsystem Chapter 16 explains how the SERVice command

subsystem is used to obtain and set information useful for servicing the

power meter.

17 IEEE 488.2 Command Reference Chapter 17 contains information about

the IEEE488.2 Common Commands that the power meter supports.

ACalibration Factor Block Layout Appendix A contains information on

the calibration factor block layout for E4410 Series, E9300 Series, E9320

Series and N8480 Series sensors (excluding Option CFT).

viii N1911A/1912A P-Series Power Meters Programming Guide

THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

N1911A/1912A P-Series Power Meters Programming Guide ix

Contents

Notices ii

General Warranty iii

Restricted Rights Legend iii

Equipment Operation iv

General Safety Considerations v

User Environment v

In This Guide… vi

1 Power Meter Remote Operation

Introduction 5

Configuring the Remote Interface 6

•Interface Selection 6

•GPIB Address 6

•LAN Configuration 7

•USB Configuration 8

Zeroing and Calibrating the P-Series Power Sensor 9

•Zeroing 9

•Calibration 9

Making Measurement 11

•Using MEASure? 12

•Using the CONFigure Command 17

•Using the Lower Level Commands 26

Using Frequency Dependent Offset Tables 27

•Overview 27

•Editing Frequency Dependent Offset Tables 29

•Selecting a Frequency Dependent Offset Table 32

•Enabling a Frequency Dependent Offset Table 32

•Making the Measurement 32

Setting the Range, Resolution and Averaging 34

•Resolution 34

•Averaging 34

•Auto Averaging Mode 35

•Filter Length 36

•Range 37

x N1911A/1912A P-Series Power Meters Programming Guide

Setting Offsets 38

•Channel Offsets 38

•Display Offsets 38

Setting Measurement Limits 40

•Setting Limits 40

•Checking for Limit Failures 42

•Using STATus 43

Getting the Best Speed Performance 44

•Measurement Rate 44

•Sensor 45

•Trigger Mode 45

•Output Format 47

•Units 47

•Command Used 47

•Fast Mode 48

How Measurements are Calculated 49

Status Reporting 50

•The General Status Register Model 50

•How to Use Register 53

•The Condition Polling Method 53

•The SRQ Method 54

•Device Status Register 65

•Using the Operation Complete Commands 67

Saving and Recalling Power Meter Configurations 69

•How to Save and Recall a Configuration 69

Using Device Clear to Halt Measurements 70

An Introduction to the SCPI Language 71

•Mnemonic Forms 71

•Using a Colon (:) 71

•Using a Semicolon (;) 72

•Using a Comma (,) 72

•Using Whitespace 72

•Using “?” Commands 72

•Using “*” Commands 73

•Syntax Conventions 73

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