Agilent Technologies 5071A User manual

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Agilent 5071A Primary

Frequency Standard

Telecommunications

Options Supplemental

Manual

This manual describes the Telecommunications options for the Agilent

5071A Primary Frequency Standard. The information in this manual

applies toinstruments with one or more telecommunications options

having the number prefix listed below, unless accomplanied by a

"Manual Updating Changes" package indicating otherwise.

SERIAL NUMBER PREFIX: 3249A and above

Options: 048, 104, 105, 220, 221, 222, 270, 271, and 272

Agilent Technologies, Inc. 8.CD.NL.A.03.11.97.R1.J.CW2F

Santa Clara Site

5301 Stevens Creek Boulevard

Santa Clara, California 95052-8059

Copyright Agilent

Technologies, Inc. 1994, 2000

Reproduction, adaptation, or

translations without prior

written permission is

prohibited, except as allowed

under the copyright laws.

Printed: December 2000

Printed in USA

Manual part number

05071-90042

Certification

and Warranty

Certification

Agilent Technologies

certifies that this product

met its published

specification at the time of

shipment from the factory.

Agilent further certifies that

its calibration measurements

are traceable to the United

States National Institute of

Standards and Technology

(formerly National Bureau of

Standards), to the extent

allowed by the Institute’s

calibration facility, and to

the calibration facilities of

other International

Standards Organization

members.

Warranty

Agilent warrants

Agilent hardware,

accessories and supplies

against defects in materials

and workmanship for a

period of one year from date

of shipment. If Agilent

receives notice of such

defects during the warranty

period, Agilent will, at its

option, either repair or

replace products which prove

to be defective. Replacement

products may be either new

or like-new.

Agilent warrants that

Agilent software will not fail

to execute its programming

instructions, for the period

specified above, due to

defects in material and

workmanship when properly

installed and used. If Agilent

receives notice of such

defects during the warranty

period, Agilent will replace

software media which does

not execute its programming

instructions due to such

defects.

For detailed warranty

information, see back matter.

Safety Considerations

General

This product and related

documentation must be

reviewed for familiarization

with this safety markings

and instructions before

operation.

This product is a safety

Class I instrument (provided

with a protective earth

terminal).

Before Applying Power

Verify that the product is set

to match the available line

voltage and the correct fuse

is installed. Refer to

instructions in Chapter 1 of

the Manual.

Before Cleaning

Disconnect the product from

operating power before

cleaning.

Safety Earth Ground

An uninterruptible safety

earth ground must be

provided from the mains

power source to the product

input wiring terminals or

supplied power cable.

Warning Symbols That

May Be Used In This

Book

Instruction manual symbol;

the product will be marked

with this symbol when it is

necessary for the user to

refer to the instruction

manual.

Indicates hazardous

voltages.

Safety Considerations

(contd)

Indicates earth (ground)

terminal.

or

Indicates terminal is

connected to chassis when

such connection is not

apparent.

Indicates Alternating

current.

Indicates Direct current.

WARNING

BODILY INJURY OR

DEATH MAY RESULT

FROM FAILURE TO HEED

A WARNING. DO NOT

PROCEED BEYOND A

WARNING SIGN UNTIL

THE INDICATED

CONDITIONS ARE FULLY

UNDERSTOOD AND MET.

CAUTION

Damage to equipment, or

incorrect measurement

data, may result from

failure to heed a caution.

Do not proceed beyond a

CAUTION sign until the

indicated conditions are

fully understood and met.

For additional safety and

acoustic noise information,

see back matter.

MANUAL UPDATING CHANGES CHANGE DATE: December 12, 2001

MANUAL UPDATING COVERAGE

This supplement adapts your manual to

Serial Numbers prefixed through:

US3930

MANUAL IDENTIFICATION

Instrument: Agilent 5071A

Primary Frequency Standard

Telecommunications Options

Supplemental Manual

Manual Print Date: December 2000

Manual Part Number: 05071-90042

ABOUT THIS SUPPLEMENT

The information in this supplement is provided to correct manual errors and to adapt the manual

to instruments containing changes after the manual print date.

Change and correction information in this supplement is itemized by page numbers corresponding

to the original manual pages. The pages in this supplement are organized in numerical order by

manual page number.

HOW TO USE THIS SUPPLEMENT

Insert this title page in front of the title page in your manual.

Perform all changes specified for “All Serials”, and all changes through the Series Prefix of

your instrument or board.

Insert any complete replacement pages provided into your manual in the proper location.

The following pages are included in this update:

If your manual has been updated according to the last edition of this supplement, you need only

perform those changes pertaining to the new series prefix; see List of Effective Pages. New

information affecting “All Serials” will be indicated by a “#” in front of the change.

LIST OF EFFECTIVE PAGES

SERIAL PREFIX, SERIAL #

OR DATE CODE

PAGES

(05071-90042, December 2000)

# All Serials ....................... 3-3.

All Serials ....................... All pages.

MANUAL CHANGES

AGILENT 5071A TELECOMMUNICATIONS OPTIONS SUPPLEMENTAL MANUAL

SERIAL PREFIX, SERIAL #

OR DATE CODE

CHANGES

# Page 3-3, Accessories Furnished, dc input connector

All Serials >Add the following

Option 048: Delete reference to dc input connector part number 1251-0126

Title Page, Serial Number Prefix

All Serials >Change from "3249A and above" to "US3930"

Throughout The Entire Manual

All Serials >Change all references of "HP" to "Agilent"

>Change all references of "HP 5071A" to "5071A"

iii

Preface

How to Use This Manual v

Instrument Identification v

Instruments Covered by This Manual vi

Manual Organization vi

How to Order Manuals vi

1 Operating and Programming

Introduction 1-2

Introducing the HP 5071A 1-2

HP 5071A Major Features 1-2

Operating The HP 5071A 1-2

Clock Functions 1-2

Getting Started 1-3

The HP 5071A at a Glance 1-3

Connectors 1-3

Rear Panel Connections 1-3

Starting The HP 5071A 1-6

Performing Basic Tasks 1-6

Synchronizing to an External 1 PPS Reference 1-6

Powering Down the HP 5071A 1-6

Using the HP 5071A 1-7

Monitoring Status 1-7

Disabling the Internal Standby Battery 1-7

In Case of Difficulty 1-8

Front-Panel Indicators and Messages 1-8

Operating System Failures 1-8

Restarting the HP 5071A 1-8

Verifying Operation 1-8

2. Rear-Panel Output Connectors 1-8

HP 5071A Command References 1-9

HP 5071A Command Summary 1-9

SCPI Commands 1-9

SCPI Subsystem Commands 1-9

Status Reporting 1-9

Rear-Panel Status Output Operation 1-9

Status Output Programming 1-9

Contents

iv

Installation 1-10

Preparation for Use 1-10

Power Requirements 1-10

Bench Operation 1-10

Operating the HP 5071A From External Dc Power 1-10

Preparing the HP 5071A For External Dc Operation 1-11

Replacing the External Dc Input Power Fuse 1-11

Internal Standby Battery Maintenance 1-11

Long-Term Storage 1-11

2Service

Performance Tests 2-2

Service 2-3

Top-Level Diagnostic Tree Organization 2-4

Warmup and Fatal Error Diagnostic Tree 2-5

Advisory Messages 2-6

Assembly/Module Diagnostic Trees 2-8

A9 Diagnostic Tree (A/M Subsection 4) 2-9

Theory of Operation 2-10

Introduction 2-10

Simplified Functional Description 2-10

Functional Block Descriptions 2-11

Instrument Control Block 2-12

Reference Oscillator/RF-Chain Block 2-12

Input/Output 2-13

Power Supply Block 2-14

A1 Motherboard Circuit Description 2-15

A11 Power Steering Logic Assembly 2-16

48V Subpanel Assembly 2-17

B1 Internal-Standby Battery 2-18

Replaceable Parts 2-19

Exchange Assemblies 2-19

Backdating 2-21

Contents

v

3 Specifications

Supplemental Characteristics 3-2

Time Standard 3-2

Clock 1PPS Outputs 3-2

Clock Synchronization 3-2

Internal Standby Battery (Nominal Values) 3-2

Environmental 2-9

Power Requirements 3-2

Weight 3-3

Accessories Furnished 3-3

dc input connector 3-3

Available Accessories and Options 3-4

Options 3-4

Contents

vi

vii

Preface

This manual provides operating, programming, and assembly-level

service information for the HP 5071A Primary Frequency Standard

Telecommunications options.

How to Use This Manual

Telecommunications option information is presented as changes,

additions, and deletions to the material covered in the HP 5071A

Operating and Programming and Assembly-Level Service manuals.

The information appears in sequential order of occurrence

corresponding to the subject headings that are affected by the options.

Each occurrence of telecommunications option information uses the

following presentation format:

Except for the rear-panel illustration in chapter 1 of the HP 5071A

Operating and Programming manual and Figure 2-1, all changes and

corrections to manual illustrations appear as descriptive text items

that convey new, changed, or deleted information about the artwork.

The structure of topics covered corresponds to the outlines of the

HP 5071A Operating and Programming and Assembly-Level Service

manual except for specifications which occupies its own chapter. (See

manual organization below.)

Instrument Identification

Instrument identification is made from the serial number located on

the rear panel of the HP 5071A. Agilent uses a two-part serial number

with the first part (prefix) identifying a series of instruments and the

second part (suffix) identifying a particular instrument within a series.

An Agilent assigned alpha character between the prefix and suffix

identifies the country in which the instrument was manufactured.

Subject heading(s): a. Left-justified option designation where:

Option 048 = 48 Vdc power option, and

Any TCO Option = Telecommunications

output options 104, 105, 220, 221, 222, 270,

271, or 272.

b. Text information explanation for

either HP 5071A manual, and/or,

c. Corrected text information for the

cited subject heading(s)

Preface

viii

Instruments Covered by This manual

This manual applies to any HP 5071A Primary Frequency Standard

that is equipped with one or more of the telecommunications options

shown on the title page and has the same serial number prefix(es) also

shown on the title page. If the serial number prefix of your standard

differs from that listed on the title page of this manual, then there may

be differences between this manual and your instrument.

Instruments having a higher serial prefix are covered when required

by one or more manual-change sheets included with this manual. If a

required change sheet is missing, contact your nearest Agilent Sales

Office listed at the back of this manual.

Manual Organization

This telecommunication options supplemental manual consists of a

table of contents, preface, and three chapters. The page running

headers identify the chapters and sections of this manual. The chapter

contents are summarized as follows:

How to Order Manuals

This manual’s part number is 05071-90031. Use it to order copies of

this manual. The HP 5071A Operating and Programming manual

part number is 05071-90029. The HP 5071A Assembly-Level Service

manual part number is 05071-90003.

Chapter 1,

Chapter 2,

Chapter 3,

Operating and Programming, is divided into seven

sections: Introduction, Getting Started, Using the

5071A, In Case of Difficulty, HP 5071A Command

References, and Installation.

Assembly-Level Service, is divided into five sections:

Performance Tests, Service, Theory of Operation,

Replaceable Parts, and Backdating.

Specifications, is divided into two sections:

Supplemental Characteristics, and Available

Accessories and Options.

1

Operating and Programming

Introduction

1-2

Introduction

This section describes the additions, changes, and deletions to the

information that appears in the introduction of the 5071A Operating

and Programming manual.

Introducing the 5071A

5071A Major Features

In the bulleted text delete:

• 45 minute standby battery

Operating The 5071A

Clock Functions

1st paragraph, 2nd sentence is changed:

The 1 pps output is moveable in time and can be automatically

synchronized with other 1 PPS sources.

3rd paragraph is changed:

1 pps output: There is one 1 pps output on the 5071A front panel.

4th paragraph is changed:

The 1 pps output is TTL compatible and requires 50Ω termination.

You can automatically synchronize the 1 PPS signal to an external

1 PPS, or manually change its timing by up to ± 500 ms in 50 ns

steps. Use the front-panel Sync Input for an external system reference

input.

2nd paragraph (page vii) is changed:

Power input and management: The 5071A operates from either ac or

dc power. Power-source priority is controlled by the 5071A. The

priority order is:

1. External dc power: when below the specified minimum voltage (40

Vdc on both dc inputs), or when absent, the 5071A switches to,

2. Ac line power.

(Item 3 is deleted.)

Option 048:

Any TCO Option:

Option 048:

Operating and Programming

Getting Started

1-3

Getting Started

This section describes the additions, changes, and deletions to the

information that appears in chapter 1 of the 5071A Operating and

Programming manual.

CHAPTER GUIDE

Where to Find Important Topics

In the bulleted list delete:

• Powering Down the 5071A 1-8

The 5071A at a Glance

Connectors

The paragraph immediately following item 8. Sync Input is changed-

(The electrical characteristics of these connectors are the same as the

rear-panel 1 pps Output and Sync Input. See “Rear-Panel Features”

on page 4 and 5 for more information.) The rear-panel 1 pps outputs

and sync input connectors are absent. The front-panel 1 pps output

and sync input signal characteristics are however accurately

described by items 5 and 6 of Table 1-1 “Connector Descriptions” in

the Operating and Programming manual.

Rear-Panel Connections

Table 1-1 Connector Descriptions items in the Operating and

Programming manual are changed:

Items 5 and 6 are absent from the rear-panel.

Item 9 is absent.

Item 10 Connector Type is a 5-screw terminal strip.

Item 10 Signal Characteristics are 40-58 Vdc on the rear-panel

terminal strip dc-power inputs 1 and/or 2 with GND as chassis

ground.

Option 048:

Any TCO Option:

Option 048:

Operating and Programming

Getting Started

1-4

5071A Rear Panel Connections

(See Table 1-1 in this chapter for connector descriptions)

NOTE

The illustration on these pages depicts an 5071A equipped with

Telecomm Options 048 and 272. When the telecomm output option

includes either 100 or 120 Ω balanced output lines, the Framed

Output connector will be a two-center-conductor BNC in place of the

one shown above. In addition, the Mb/s and impedance designations

will correspond to the particular telecomm output option shipped with

the 5071A.

OPTIONS

001 Hi Performance

5071A

Sync Out

WARNING:

To avold electric shock,

do not remove covers.

No user-serviceable parts

inside.

Refer all servicing to

qualified personnel.

CAUTION:

METRIC & INCH HARDWARE

CONSULT SERVICE MANUAL

ISM 1-A

92

FOR LABORATORY USE BY

QUALIFIED PERSONNEL

FOUR USAGE EN LABORATOIRE

PAR PERSONNEL QUALIFIE

!

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A

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12

.

75

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32

OUTPUTS

P

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t

1

P

o

r

t

2

Programmable

outputs

5MHz or

10MHz

+13 dBm 50 W

Sine Wave

1 MHz

100 kHz

8 kHz Sync In

TTL

50W

TTL

50W

Framed Output

G.703/6

G.704

50W

Status

Output

RS - 232C

(DTE)

!

8 kHz Sync Out

Sync Out

2.048 Mb/s

50W

TTL

75W

G.703/10

1 2

34 5

Operating and Programming

Getting Started

1-5

120 Vac

7

TELE

C

O

M

OPTIO

N

S

:

48

V

ol

t

1

.

544

M

b

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2

.

048

M

b

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048 104

105

220

270

221

271

222

272

O

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a

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R

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100

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120

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220

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240

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Operating and Programming

Getting Started

1-6

Table 1-1 Rear-Panel Telecommunications Options Connections

Item

Number

Function

Connector

Type

Signal Characteristics

1

8 kHz Sync In BNC (F)

8 kHz, TTL level, into 50 Ω

2

8 kHz Sync Out BNC (F)

8 kHz, TTL level, into 50 Ω

3*

Framed Output BNC (F)

4.8 V p-p max into 75 Ω

(6V p-p into 100, or 120 Ω)

4*

Sync Out BNC (F)

3 V p-p max into 75 Ω

5

Sync Out BNC (F)

TTL level, into 50 Ω

6

Dc Power Fuse Cartridge

Fuse

Fuses external dc power, 2.5 amp, 250-

volt rating (part number 2110-0952)

7

Dc Power Input 5-Screw

Terminal

Strip

40 - 58 Vdc, 100 W Max, as labeled on

rear panel (See bottom of page 1-10)

* Note: Item 3, Framed Output complies with ITU-T (formerly CCITT) G.703/6 (G.703/2

if option 104 or 105 is present) formatted per G.704.

Item 4, per G.703/10, 75 Ω (Additionally @ 1.544 MHz if option 104 or 105

present).

Starting The 5071A

Bottom of page 1-6. * note is changed:

* 1 entry may be present: “Power source is BATT”

Performing Basic Tasks

Synchronizing to an External 1 PPS Reference

Observe the following changes to the external synchronization

procedure:

References to 1 PPS outputs and Sync inputs are singular.

Reference to rear-panel 1 pps output(s) and Sync input do not apply.

Use of the front-panel ARM REAR menu option will always result in

the display showing Sync timed out.

Powering Down the 5071A

This procedure is deleted.

Option 048:

Any TCO Option:

Option 048:

Operating and Programming

Using the 5071A

1-7

Using the 5071A

This section describes the additions, changes, and deletions to the

information that appears in chapter 2 of the 5071A Operating and

Programming manual.

CHAPTER GUIDE

All references to 1 PPS outputs and Sync inputs are singular.

Chapter Summary

In the bulleted list delete.

• Disabling the Internal-Standby Battery 2-15

Where to Find Important Topics

In the bulleted list delete:

• Disabling the Internal Battery 2-15

Monitoring Status

Table 2-2. Internal Operating Parameters

The bottom rightmost table cell entry under Typical Range is changed:

DC or AC

Disabling the Internal -Standby Battery

This procedure is deleted.

Any TCO Option:

Option 048:

Operating and Programming

In Case of Difficulty

1-8

In Case of Difficulty

This section describes the additions, changes, and deletions to the

information that appears in chapter 3 of the 5071A Operating and

Programming manual.

Front-Panel Indicators and Messages

Table 3-1. Front-Panel Status Lights

All references to internal-battery power, battery status, or battery

operation are deleted.

Operating System Failure

Restarting the 5071A

Step 3 of the procedure is deleted.

Step 4 is renumbered and changed:

3. Reapply external dc or ac-line power.

Step 5 becomes step 4.

Verifying Operation

2. Rear-Panel Output Connectors

Checking the Outputs

Step 1 of the procedure is changed:

1. Connect one of the 5071A outputs to an input channel of the

54600A with a 50Ω feed through termination and BNC cable.

(When verifying rear-panel telecommunications outputs, use

manual scope settings and the appropriate termination as shown

on the rear-panel labels and in Table 1-1. The referenced rear-

panel telecommunications outputs should comply with ITU-T

(formerly CCITT) G.703/6 (G.703/2 if option 104 or 105 is present),

formatted per G.704. Sync Out complies per G.703/10, 75 Ω

(Additionally @ 1.544 MHz if option 104 or 105 is present.

Option 048:

Any TCO Option:

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Agilent Technologies 5071A User manual

Agilent Technologies 5071A User manual

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