Agilent Technologies N9340B Manual

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Agilent N9340B

Spectrum Analyzer

Programmer’s Guide

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or

translation into a foreign language) without

prior agreement and written consent from

Agilent Technologies, Inc. as governed by

United States and international copyright

laws.

Edition

Second Edition, April. 2010

Agilent Technologies, Inc.

No. 116 Tuo Xin West 1st Street

Hi-Tech Industrial Zone (South)

Chengdu 610041, China

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 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

separate agreement shall control.

Restricted Rights Legend

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Software and technical data rights granted

to the federal government include only

those rights customarily provided to end

user customers. Agilent provides this

customary commercial license in Software

and technical 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

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Software or Computer Software

Documentation).

Technology Licenses

The hardware and/or software described in

this document are furnished under a

license and may be used or copied only in

accordance with the terms of such license.

Safety Notices

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.

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 death.

Do not proceed beyond a

WARNING notice until the

indicated conditions are fully

understood and met.

Software Revision

This guide is valid for Version A.01.10 and

above of the N9340B handheld spectrum

anyalzer firmware.

N9340B Programmer’s Guide

In This Guide…

This guide contains programming information for the

N9340B Spectrum Analyzer.

1 Getting Started

Prepare for the remote control.

2 Programming Fundamentals

A quick overview of the SCPI programming.

3StatusRegisters

Introduction of the status registers.

4 Programming Example

How to accomplish the basic applications in programming.

5 Command Reference

Describe every programming command ant the related

softkeys’ functions in detail.

For more information about N9340B handheld spectrum

analyzer, please refer to

www.agilent.com/find/n9340b

N9340B Programmer’s Guide

Contents

1 Getting Started 1

Remotely Operating Your N9340B 2

2 Programming Fundamentals 9

Overview 10

Command Categories 12

Command Syntax 13

Creating Valid Commands 15

Program and Response Messages 16

Parameters in Commands 17

3StatusRegisters 19

Overview 20

How to use the Status Registers 23

Status Register System 25

4 Programming Example 31

Overview 32

Programming in C using the VTL 33

Checking USB Connection 39

Using C with Marker Peak Search and Peak Excursion 40

Using Marker Delta Mode and Marker Minimum Search 44

Measuring Phase Noise 48

N9340B Programmer’s Guide

Contents

5 Command Reference 51

IEEE Common Commands 52

CALCulate Subsystem 56

Limit Line Subsection 56

CALCulate:MARKer Subsection 57

DEMOdulation Subsystem 62

DISPlay Subsystem 63

INITiate Subsystem 65

INSTrument Subsystem 67

MEASure Subsystem 68

OBW Subsection 68

ACPR Subsection 69

Channel Power Subsection 71

SEM Subsection 72

SENSe Subsystem 81

[:SENSe]:AVERage Subsection 81

[:SENSe]:BANDwidth Subsection 82

[:SENSe]:DETector Subsection 85

[:SENSe]:FREQuency Subsection 87

[:SENSe]:POWer Subsection 89

[:SENSe]:SWEep Subsection 90

SYSTem Subsystem 92

TGENerator Subsystem 94

TRACe Subsystem 97

TRIGger Subsystem 98

UNIT Subsystem 100

s

Agilent N9340B Handheld Spectrum Analyzer

Programmer’s Guide

Getting Started

The purpose of this chapter is to serve as a reminder of

SCPI (Standard Commands for Programmable Instruments)

fundamentals to those who have previous experience in

programming SCPI. This chapter is not intended to teach

you everything about the SCPI programming language. If you

are using an optional programming compatibility modes, you

should refer to the manual that came with the option.

2 N9340B Programmer’s Guide

1 Getting Started

Remotely Operating Your N9340B

The N9340B provides both the USB and LAN connection

which allows you to set up a remote operation environment

with a controller computer. A controller computer could be a

personal computer (PC), a minicomputer. Some intelligent

instruments also function as controllers.

Computer Requirement for Remote Operation

Usually, you need to prepare an compatible PC with the

following requirements to set up a remote operation

environment:

Processor: 450 MHz Pentium®II or higher required

Operating system: Microsoft®Windows®XP or Home Editon,

Service Pack 1 or later; Windows®2000 Professional, service

pack 4 or later

Available memory: 128 MB or higher required

Available disk space: 175 MB or greater required

Getting Started 1

N9340B Programmer’s Guide 3

Connecting the N9340B to a PC via the USB Port

No extra driver is required to connect the N9340B via the

USB port to a PC. All you need is the Agilent IO libraries

suite and you can find this IO libraries suite in the

documentation CD in the shipment along with your N9340B.

Or download the IO libraries suite from Agilent website:

http://www.agilent.com/find/iolib

Refer to the following steps to finish the connection:

1Install Agilent IO libraries suite on your PC

2Switch on the N9340B

3Connect the analyzer to a PC with a USB cable.

Connecting instrument

Connecting PC

4 N9340B Programmer’s Guide

1 Getting Started

4After a while, the PC finds your N9340B as a new hardware

and prompts a message saying “Found new hardware...”. A

Found New Hardware Wizard is initiated immediately.

5Select Display a list...

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