Keysight Technologies N4963A Manual de usuario

User’s Guide

Keysight N4963A

Clock Synthesizer 13.5 GHz

Keysight N4963A

Clock Synthesizer 13.5 GHz

User 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 Keysight

Technologies as governed by United States and

international copyright laws.

Manual Part Number

N4963-91021

Edition

Edition 3.0, October 2017

Keysight Technologies, Deutschland GmbH

Herrenberger Str. 130

71034 Böblingen, Germany

For Assistance and Support

http://www.keysight.com/find/assist

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. Keysight

Technologies specifically disclaims the implied

warranties of Merchantability and Fitness for a

Particular Purpose.

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, Keysight 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.

Keysight 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 Keysight

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.

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.

Restricted Rights Legend

If software is for use in the performance of a U.S.

Government prime contract or subcontract, Software

is delivered and licensed as “Commercial computer

software” as defined in DFAR 252.227-7014 (June

1995), or as a “commercial item” as defined in FAR

2.101(a) or as “Restricted computer software” as

defined in FAR 52.227-19 (June 1987) or any

equivalent agency regulation or contract clause. Use,

duplication or disclosure of Software is subject to

Keysight Technologies’ standard commercial license

terms, and non-DOD Departments and Agencies of the

U.S. Government will receive no greater than

Restricted Rights as defined in FAR 52.227-19(c)(1-2)

(June 1987). U.S. Government users will receive no

greater than Limited Rights as defined in FAR 52.227-

14 (June 1987) or DFAR 252.227-7015 (b)(2)

(November 1995), as applicable in any technical data.

Safety Notices

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.

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.

A NOTE provides important or special

information.

CAUTION

WARNING

Safety Summary

General Safety Precautions

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.

Keysight Technologies assumes no liability for

the customer's failure to comply with these

requirements.

Before operation, review the instrument and

manual for safety markings and instructions.

You must follow these to ensure safe operation

and to maintain the instrument in safe

condition.

Initial Inspection

Inspect the shipping container for damage. If

there is damage to the container or cushioning,

keep them until you have checked the contents

of the shipment for completeness and verified

the instrument both mechanically and

electrically. The Performance Tests give

procedures for checking the operation of the

instrument. If the contents are incomplete,

mechanical damage or defect is apparent, or if

an instrument does not pass the operator’s

checks, notify the nearest Keysight Technologies

Sales/Service Office.

WARNING To avoid hazardous electrical shock,

do not perform electrical tests when there are

signs of shipping damage to any portion of the

outer enclosure (covers, panels, etc.).

General

This product is a Safety Class 1 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 of

the instrument, will make the instrument

dangerous. Intentional interruption is

prohibited.

Environment Conditions

This instrument is intended for indoor use in an

installation category II, pollution degree 2

environment per IEC 61010 Second Edition and

664 respectively. It is designed to operate

within a temperature range of 10 to 40 °C at a

maximum relative humidity of 80% for

temperatures up to 31 °C, decreasing linearly to

50% relative humidity at 40 °C at an altitude of

2000 meters.

This module can be stored or shipped at

temperatures between -40°C and +70°C.

Protect the module from temperature extremes

that may cause condensation within it.

Before Applying Power

Verify that all safety precautions are taken. The

power cable inlet of the instrument serves as a

device to disconnect from the mains in case of

hazard. The instrument must be positioned so

that the operator can easily access the power

cable inlet. When the instrument is rack

mounted the rack must be provided with an

easily accessible mains switch.

Ground the Instrument

Install the instrument so that the ON / OFF

switch is readily identifiable and is easily

reached by the operator. The ON / OFF switch is

the instrument disconnecting device. It

disconnects the mains circuits from the mains

supply before other parts of the instrument. Or

the detachable power cord can be removed from

the electrical supply. Alternately, an externally

installed switch or circuit breaker which is

readily identifiable and is easily reached by the

operator may be used as a disconnecting

device.

Do Not Operate in an

Explosive Atmosphere

Do not operate the instrument in the presence of

flammable gases or fumes.

Do Not Remove the

Instrument Cover

Operating personnel must not remove

instrument covers. Component replacement and

internal adjustments must be made only by

qualified personnel.

Instruments that appear damaged or defective

should be made inoperative and secured

against unintended operation until they can be

repaired by qualified service personnel.

Symbols on Instruments

The instruction documentation symbol. The product is

marked with this symbol when it is necessary for the

user to refer to the instruction in the documentation.

C-Tick Conformity Mark of the Australian ACA for EMC

compliance.

This mark indicates compliance with the Canadian

EMC regulations.

ISM 1-A

This text denotes the instrument is an Industrial

Scientific and Medical Group 1 Class A product.

CE Marking to state compliance within the European

Community: This product is in conformity with the

relevant European Directives. EMC Directive

2004/108/EC and Low Voltage Directive

2006/95/EC.

This symbol indicates that internal circuits can be

damaged by electrostatic discharge (ESD), therefore,

avoid applying static discharges to the panel input

connectors.

China RoHS regulations include requirements related

to packaging, and require compliance to China

standard GB18455-2001 or, for paper / fibreboard

packaging an internationally recognized marking such

as ISO standard symbol is acceptable. Keysight will

comply with China RoHS packaging marking

requirements by implementing the ISO standard

recycling symbol marking on all primary (generally for

customers) and secondary (generally for distributors)

fibreboard packaging for goods covered by China

RoHS. Tertiary packaging (generally for shippers, i.e.

shrink wrapping and pallets) are not required to be

marked. At this time Keysight will not be marking solid

wood packaging.

Indicates the time period during which no

hazardous or toxic substance elements are

expected to leak or deteriorate during

normal use. Forty years is the expected

useful life of the product.

The Korean Certification (KC) mark is required for

products that are subject to legally compulsory

certification.

The KC mark includes the marking’s identifier code

that has up to 26 digits and follows this format:

KCC-VWX-YYY-ZZZZZZZZZZZZZ.

This symbol indicates that the instrument requires

alternating current (AC) input.

This symbol indicates that the power line switch is

in the ON position.

This symbol indicates that the power line switch is in

the OFF position.

General Recycling Mark

Error! No text of specified style in document.

Environmental Information

This product complies with the WEEE Directive

(2002/96/EC) marketing requirements. The affixed

label indicates that you must not discard this

electrical/electronic product in domestic household

waste.

Product category: With reference to the equipment

types in the WEEE Directive Annexure I, this product

is classed as a “Monitoring and Control

instrumentation” product.

Do not dispose in domestic household waste.

To return unwanted products, contact your local

Keysight office, or see

www.keysight.com/environment/product/

for more

information.

Contents

Clock Synthesizer 13.5 GHz User Guide 7

Contents

Contents......................................................................................................................... 7

1Getting Started................................................................................................... 9

1.1 General..................................................................................................... 9

1.2 Getting started with N4963A................................................................... 11

1.2.1 Unpacking and installation........................................................ 11

1.2.2 Important notes......................................................................... 11

1.2.3 Performance recommendations................................................. 11

1.3 Connect The Hardware ............................................................................ 12

1.4 Setting frequency and output levels......................................................... 13

1.5 Aligning clock and data........................................................................... 13

1.6 Enabling jitter injection ........................................................................... 14

2N4963A Operation Overview.............................................................................. 15

3N4963A System Overview ................................................................................. 17

3.1 Front panel quick reference..................................................................... 19

3.1.1 Connectors ............................................................................... 19

3.1.2 Front panel controls .................................................................. 19

3.2 Rear panel quick reference...................................................................... 21

3.2.1 Connectors ............................................................................... 21

3.2.2 Label ........................................................................................ 22

3.2.3 Controls.................................................................................... 22

4System Details and Performance Specifications ................................................. 23

4.1 General................................................................................................... 23

4.2 Safety and Regulatory ............................................................................. 24

4.3 Internal clock.......................................................................................... 24

4.4 Jitter injection ......................................................................................... 27

4.4.1 Internal Jitter............................................................................. 27

4.4.2 External jitter............................................................................. 30

5Operation ........................................................................................................ 33

5.1 General information ................................................................................ 33

5.1.1 Performance recommendations................................................. 34

5.1.2 Command Structure .................................................................. 34

Contents

5.2 Front Panel Interface............................................................................... 36

5.2.1 Display panel ............................................................................ 37

5.2.2 Local, Clock, Reference, and Jitter Select Controls ..................... 38

5.2.3 Display selection controls.......................................................... 39

5.2.4 Configuration adjustment controls............................................. 41

5.3 Rear Panel Interface................................................................................ 43

5.4 Power-On State....................................................................................... 44

5.5 System verification.................................................................................. 45

5.5.1 Frequency and Output Amplitude............................................... 45

5.5.2 DC offset and phase offset......................................................... 49

5.5.3 Internal jitter injection ............................................................... 51

5.5.4 External jitter injection............................................................... 54

5.6 Simple Functional Examples of N4963A use............................................ 56

5.6.1 Generic test example................................................................. 57

5.6.2 Example using the N4963A to Control the N4962A .................... 58

6Remote GPIB Interface...................................................................................... 59

6.1 GPIB Capabilities.................................................................................... 59

6.2 GPIB Command Syntax ........................................................................... 60

6.2.1 GPIB Command Syntax.............................................................. 60

6.3 IEEE Common Commands....................................................................... 61

6.4 SCPI Mandated Commands..................................................................... 62

6.5 N4963A Device Commands..................................................................... 63

6.6 SCPI Protocol Description ....................................................................... 64

6.6.1 SCPI Example............................................................................ 64

6.7 Command Summary................................................................................ 65

6.7.1 Root Subsystem ........................................................................ 65

6.7.2 :SOURce Subsystem.................................................................. 69

6.7.3 JITTer Subsystem(N4963A 101)................................................. 69

6.8 IEEE Common Capabilities ...................................................................... 72

6.9 PERL Script to exercise GPIB Commands ................................................. 76

7Returning the N4963A Clock Synthesizer to Keysight Technologies ...................... 79

Getting Started

Clock Synthesizer 13.5 GHz User Guide 9

1Getting Started

1.1 General

The N4963A Clock Synthesizer 13.5 GHz generates six pairs of differential square-

wave clock outputs from 500 MHz to 13.5 GHz. The instrument features GPIB-

programmable output amplitude, DC offset, phase offset, sub-rate trigger, and jitter

injection.

The N4963A feature set includes:

•Clock generation from 0.5 to 13.5 GHz

•GPIB-adjustable output parameters

•

1 Hz to 100 MHz jitter injection (N4963A-101)

Applications

•Multi-lane PRBS eye-mask testing

•Multi-channel stressed eye BER testing

•Crosstalk analysis with multiple aggressors

•

General instrument-grade clock generation

Key Features

•Low cost, high performance

oIntrinsic jitter <2 pS

oRise/fall times <40 pS

•Six differential clock outputs

oTwo differential front panel outputs (jittered and reference)

oFour differential rear panel outputs (two jittered and two

reference)

•GPIB programmable output parameters

oOutput amplitude: 1.2 - 4 V pp diff.

oDC offset voltage: -2 V to +2 V

oPhase offset: 360-degrees (1 UI)

•Designed for testing datacom standards

oOperates 0.5 to 13.5 GHz

oHigh-UI jitter injection (N4963A-101)

Internal clock

system

•Internal or external 10 MHz reference

•Synthesized 0.5 to 13.5 GHz clock

•Programmable low-rate trigger output (divide-by-8,9,10,…,510,511)

Getting Started

10 Clock Synthesizer 13.5 GHz User Guide

Reference Output

Phase Offset

•36o degree (1 UI) programmable offset

•2 degree minimum step size

Output Amplitude

•Front panel, single-ended 0.6 to 2 V pp

•Rear panel, single-ended 0.2 to 0.8 V pp

•Front panel, DC offset -2 V to +2 V

Display

•LED indicators and display

Interface

•Local push-button control

•GPIB (IEEE 488.2-1992)

•All controls both local and GPIB

Jitter Generation

(N4963A-101)

•Internal jitter synthesizer:

o1 Hz to 75 kHz Max 32 UI

o75 kHz to 2.4 MHz Max 32 -> 1UI

o2.4 MHz to 100 MHz Max 0.6 UI

•

Also features external jitter input

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