HP (Hewlett-Packard) Electronic Keyboard 8671A User manual

HEWLETT PACKARD

OPERATING AND SERVICE MANUAL

8671A

SYNTHESIZER

(Including Options 002, 003 and 005)

SERIAL NUMBERS

This manual applies directly to instruments with

serial numbers prefixed 1704A.

With the changes described in Section VII, this

manual also applies to instruments with serial

numbers prefixed 170IA, 1702A, and 1703A.

For additional important information about serial

numbers, see INSTR’UMENT COVERED BY

MANUAL in Section I.

COPYRIGHT AND DISCLAIMER NOTICE

Copyright - Agilent Technologies, Inc. Reproduced with the permission of Agilent

Technologies Inc. Agilent Technologies, Inc. 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. Agilent Technologies, Inc. is not liable for errors

contained herein or for incidental or consequential damages in connection with the

furnishing, performance, or use of this material or data.

SYNTHESIZER

instrum& containing improvements made after the printing o? the manual.

To ufic this supplement:

Make all ERRATA corrections

Make all appropriate Serial “umber related changes indicated in the tables below.

1 through 6

ERRATA

Pa@ 1.4, Paragraph 1.42:

Add: If the instrument rack mounting slides are to be mounted in a standard &LA. rack, then B” adapter

(HP part number 1494.0023) is needed. The slides without the adapter ca” be directly mounted in

the Hewlett-Packard system enclosures.

1 through 10

CPage 4-14, PROCEDURE, step 4:

Change i” the last sentence 0.17 Vrms to 0.017 Vrms.

) Page 4-23, Paragraph 4.23, DESCRIPTION:

Change in the first sentence, 100 MHz OUT to 10 MHz OUT.

Page 5.9, PROCEDURE, Step 7 (Table of A3AlA2L4 Inductor Values):

Change the HP part number of the .68 pH inductor to 9140-0141.

Ic Page R-43, Figure S-35, (Service Sheet 3~A2):

Change in lower right comer, the off page connection to

CE) 9”AS.

Page 8.51, Figure 8-47 (Service Sheet 7.A2):

Delete, on A2AlOU25, the

connections

between pins 1 and 2, 3 and 4, 5 and 6,7 and 12. Show pins 2,4,5,

a”d 1.2 as no connection (NC).

27 March

8 Pages

Model 8671A

CONTENTS

Section

1

GENERAL INFORMATION

1.1. Introduction ....................

1.7. Specifications ...................

1.9. Safety Considerations ..............

l”13. Inslruments Covered by Manual .......

1..17. Manual Change Supplements,

l”20. Description .....................

l-22. Frequency ....................

l”25. ou1put Level ..................

I..27. Frequency Modulation ...........

J-30. Miscellaneous Outputs and Indicators

1.33. Remote Operation ..............

1.35. Optiulls .......................

1.36. I’:lectrical Opliuns ...............

1.40. Mechanical Options ..............

1..46. HP-IH Compatibility ...............

1.49. Selecting the HP-Ii3 Address

1.51. Accessories Supplied ...............

1.53. Equipment Required But Not Supplied ...

1.57. Equipmenl Available ...............

l-62, I~ecommended Test Equipment. .......

II

INSI’,ALIATION .................

2.1. Introductiorl ....................

2.3. Initial Inspection .................

2.5. Preparation For USC

2.6. Power Requirements .............

2.8.

Line Voltage and Fuse Selection

2.10.

Power Cablr ..................

2.12. I-II’-IB Address lhe Parallel Poll Response

Selection

2.16. Mating Connectors ..............

2.19. Operating F,nvironment ...........

2.21. Bench Operation ...............

2.23. Rnck Mounting ................

2.25. Storage and Shipment

2.26. Environment ..................

2.26.

Packaging ....................

III OPERATION. ...................

3-l. Inlruduclion ....................

3.4. Panel Features ...................

3.6. Operator’s Maintenance

3-R. r,ocal operation ..................

3.10.

Local Operator’s Check ...........

3.12. Local Operating Instructions

3.14. Remote (HY.IB) Operation ...........

3.1% Compatibility .................

3.21,

LocnllRemot~ and Remote/Local Mode

Changes ....................

3.26. DATA Messages ................

3.28. Receiving IIATA Mcssagcs

3.36,

Sending lhe Data Message ..........

ii

l-l

1.1

l-l

1.1

1-l

1.1

l-4

1.4

l-4

1.1

1.4

l-4

1-4

I,-4

l-5

l”5

1.5

1-5

l”6

2.1

2-J

2-l

2.1

2-J

2.2

2.4

2-4

2.4

2-6

2.6

2-6

3.1

3-l

3-J

3.1

3-l

3-J

3-l

Section

3.38.

3-40.

3.42.

3.44.

3-46.

3.48.

3”50.

3-52.

3.54.

3.58.

3.60.

3-62.

3-64.

Receiving the Trigger Message

Receiving the Clear Message

Receiving the Remote Message

Receiving the Local Message

Receiving the Local Lockout Message

Receiving the Clear Lockout/Set Local

Message

Receiving the Pass Control Messnge

Sending the Require Service Message

Sending the Status Byte Message

Sending the Status Bit Message

Receiving the Abort Message

Programming Quick Reference Guide

Programming Examples

IV PERFORMANCE TESTS .............

4-l. Introduction .....................

4.3. Equipment Required ................

4.5. Test Record. .....................

4.7. Calibration Cycle ..................

4.9. Abbreviated Performance Testing .......

4.11. Operational Verification Checks ........

4.12. RF Output Level and Flatness. .........

4.13. Harmonics. ......................

4~14. SWR ..........................

4.15. FM Accuracy .....................

4.16. Non.Harmonically Related Spurious

4”ll. Power tine Related Spurious ..........

4.18. Single-Sideband Phase Noise Ratio .......

4.19. FM Frequency Response .............

4.20. FM Harmonic and Non-Harmonic pislortion

4.21. Residual FM in FM and CW Modes .......

4~22. Frequency Switching Time ............

4.23. Internal Time Base Aging Rate .........

V ADJUSTMENTS.

5-1. Introduction

5.5. Safety Considerations

5.1. Equipment Requited

5.11. Factory Selected Comporwnts

5.13. Related AdIustmcnts

5.18. Adjustment Locations

5.20. A3 RF Sduree Assembly Adjustment

5”21. Power Supply Adjustments.

5.22. 10 MHz Reference Oscillator Adjustment

5-23.

Digital-to-Analog Converter Adjustment

5.24. YTO Driver Adjustment.

5”25.

VoltageControlled Crystal Oscillator

(VCXO) Adjustment

5.26. M/N Loop Adjustments

5-27.

Y’X’O Loop Sampler Adjustmenls

Page

3.11

3”ll

3.I,1

3.11

3”12

3.12

S-J.2

3-13

3.13

3”13

3.13

4-l

4.1

4-J

4-l

4.3

4-4

4-l

4.8

4-9

4.10

4~13

I-15

4.18

4.20

4.23

5-J

5-l

5.1

5-J.

5-J

5”l

5-4

5.5

5-6

5.1

Model 8671A

Contents

CONTENTS (Cont’d)

Section

5.28. YTO Loop Offset and FM Overmodulation

Adjustments

5.29. YTO Loop Phase Detector Adjustment

5.30. FM Driver Adjustment

5-31. A2 Controller Assembly Adjustments

5-32. 160-240 MHz (20130 MHz or LFS Loop)

VCO Prctune Adjustments

5.33. 20/30 Mnz (LFS) Loop Divider Bias

Adjustments

5.34. A2A4 Assembly Notch Filter Adjustment

5-35. Al RF Output Assembly FM Sensitivity

Adiustment

VI

6.1.

6-3.

6-5.

6.1.

6.11

6-14

VII

7.1.

7-3.

7-6.

REPLACEABLE PARTS

Introduction

Excharlge Asfiemblips

Abbreviations

Replaceable Parts List

Ordering Information

spare Parts Kit

MANUAL CHANGES

Introduction

Manual Changes

Manual Change Instructions

5.15

5”17

5-19

5.20

5-20

5.21

5-29

5-24

6.1

6-l

6.1

6-l

7-l

I-l

7-l

7.1

Section Page

7.7. Instrument Improvements ...............

7-3

7.11. Instrument Improvement Modification

Instructions ........................

7.3

VIII SERVICE

.......................... 8-l

8.1. Introduction

........................ 8-l

8.5. Safety Considerations

.................. 8.1

8.11. Principles of Operation

................. 8.1

8.13. Troublesbooting

...................... 8-l

8.14. Arrangement in Manual ...............

8.1

8.16.

Supplemental Troubleshooting Aids ....... 8-l

8.20. Recommended Test Equipment

............ 8.5

S.22. Service Aids. ........................

8-5

8.27. Repair

............................ S-5

8.29. Factory Selected Components. ..........

8-5

8.31.

Non-Field Repairable Assemblies ......... 8.5

8.33. Module Exchange Program ............. S.5

8.35.

After Service Product Safety Checks ...... 8-6

8.41. Disassembly and Reassembly Procedures .... 8-6

8.52. Logic Symbols

...................... S-10

8.54. Qualifiers .......................

8.11

8.56.

Indicator Symbols .................

Kll

8.58.

Contiguous Blocks ................. 8.11

E-60.

Dependency Notation ............... 8-11

8.62. Common Control Block ..............

8-14

8”64. Complex Devices .................. 8-14

SERVICE SHEETS

Service Sheet

Page

1 Overall Troubleshooting Rlock Diagram

2

A3 RF Source Assembly

3 A2 Controller Assembly

l.Al AlAl Front Panel Assembly.

l-A2 20130 MHz Divider Assembly

2.A2 20/30 MHz Phase Detector Assembly

3.A2 VCO 160-240 MHz Assembly

4.A2 HP-In Address Assembly

5.A2 P/O HP.IB Interface Assembly

6.A2 P/D IntexKace Assembly

7.A2 Ilegistex 1 Assembly

8.A2 P/O Timing and Control Assembly

9.A2 P/O Timing and Control Assembly

lo-A2 P/O Output Register Assembly

Il-AZ P/O Output Regsiter Assembly

8.29

8-30

8.34

8.36

8.38

8.40

8-42

8.44

8.46

8.48

8-50

8.52

8.54

8.56

8.58

12.A2 P/O Front Panel Assembly 8.60

13.A2 P/O Front Panel Assembly 8-62

l-A3 Reference Phase Lock Assembly 8.64

2~A3 100 MHz VCXO Assembly 8-66

3-A3 M/N Phase Detector Assembly 8.68

4-A3 M/N VCO Assembly 8-70

5.A3 M/N Output Assembly 8-72

6.A3 Digital-to-Analog Converter 8-74

7.A3 YTO Main Coil Driver 8-76

%A3 YTO Sampler Assembly 8.78

9-A3 YTO Phase Detector Assembly 8.K

IO-A3 FM Driver Assembly 8.82

11.A3 Rectifier Assembly 8~84

12.A3 Positive Regulator Assembly 8-86

13.A3 Negative Regulator Assembly 8-88

Model.

8671A

ILLUSTRATIONS

1”l.

l-2.

2-l.

2.2.

2.3.

2-4.

3.1

3-2.

3.3.

3-4.

3.5.

4-l.

4.2.

4-3.

4.4.

4-5.

4-6.

4.7.

4.8.

4.9.

4-10.

5-s.

5.2.

5.3.

5.4.

5-5.

5.6.

Mudcl 8671A and Accessories Supplied

Special Interconnect Cable

Line Voltage and Fuse Selection

Power Cable and Mains Plug Part Numbers

Locatiorl OK IIY.IB Address and

Parallel Poll Switches, .

Hewlett-Packard Interface Bus Connection

Front Panel Connectors, Controls; Switches

and Displays

Rear Panel Controls, Connectors, and

Indicators

Operator’s Frequency and Modulation

Checks Test Setup

r‘xequency Prugramming

Typical Freqoency Switching Time for the

8671A Synthesizer Showing Worst Case

Lock and Settling Times

Programming Examples

10 MHz Reference Oscillator Adjustment

‘hst Setup.

VCXO Adjustment Test Setup

M/N Loop Adjustment Test Setup

YTO Loop Sampler Adjustment

Test Setup.

Typical Swept Frequency Response at

A3A9A5TPl (Frequency span per

division 20 MI-Ii;)

YTO Loop Of&t and FM Overmodulation

Adjustment Test Setup

YTO Loop Offset Adjustment Waveforms

YTO Loop Phase Detector Adjustment

‘Test Selup

Spectrum Analyzer Display of Phase-Locked

LoopGain......................

0/I Driver Adjustment Tebt Setup

5.5

5.8

5"ll

8.24.

3.25.

3.26.

A3A9 Assembly in Service Position R-10

Qualifiers S-11,

Contiguous Blocks 8-11

Indicator Symbols S-12

AND Dependency Notation 8”13

OR and Free Dependency Notation 8.13

AND Dependency Notation, Coder Example

using Letters 8.13

Common Control Block 8.14

Quad D-Type Latch (Individual) 8.14

Quad D-Type Latch (Combined) S-14

Quad D.Type Latch Example S-14

Multiplexer (AND.OR Selected) Example S-15

Shift Register Example 8-15

Up.Down Counter Example 8-15

Synthesizer’s Simplified Block Diagram 8-24

Major Afisembly Locations 8.24

Overall Troubleshooting Block Diagram 8-29

A3 RF Source Assembly Troubleshooting

Block Diagram 8-33

A2 Controller Assembly Troubleshooting

Rlock Diagram 8.35

Al RF Output Assembly Block Diagram 8.37

AlAl Front Panel Assembly Component,

Adjustment, and Test Point Locations 8.31

AlAl Front Panel Assembly

5.13 8-21.

5.14

5.15

5-16

8.28.

8.29.

8-30.

8-31.

8-32.

Schematic Diagram 8.37

A2A5 ZOj30 MHz Divider Assembly

Component, Adjustment and Test Point

Location 8-38

20130 MHz Divider ‘Block Diagrams 8-39

20/30 MHz Divider Assembly

Schematic Diagram 8-39

A2A4 20/30 MHz Phasp Detector Assembly

Component, Adjustment, and Test Point

Locations 8-40

ZOj30 MHz Phase Detector Block Diagrams 8.41

20130 MHz Phase Detector Assembly

Schematic Diagram S-41

Typical Output Power from 8671A

SWR Test Setup

FM Accurtxy Test Setup

Power Line Related Spurious Test Setup

Signal-to-Phaw Noise Retiu Test Setup

FM Frequency Response ‘Test Setup

FM Dietortiorl Test Setup

Residual FM in FM and CW Modes

Test Setup.

Frequency Switching Time Test Setup

Internal Time Base Aging Rate

Test Setup.

2.1

2-2

2.4

2-5

3-2

3.3

3-5

'3.10

3"12

3.14

4-2

4.5

4.7

4-9

'4-u

4.13

4.15

4.18

4-21

4.24

FIgwe

Page

5.11.

5.12.

5-18.

6”l.

6-2.

6.3.

8.1.

8.2.

8-3.

8.4.

3"5.

3.6.

8.7.

8.8.

8-9.

S-10.

8.11.

8.12.

8.13.

8.14.

S-15.

S-16.

8.17.

S-18.

E-19.

8.20.

8-21.

E-22.

8.23.

20130 MHz Loop Divider Bias Adjustment

Test Setup. 5.22

A2A4 Assembly Notch Filter Adjustment

Test Setup.

5.23

FM Sensitivity Adjustment Test Setup 5.24

Al Assembly, Front Panel Mechanical Parts 6.6

A2 Assembly, Front Panel Mechanical Parts. 6-20

Synthesizer Chassis Parts 6.41

Schematic Diagram Notes 8-2

Rear Panel of the Synthesizer 8-7

A2 Assembly Front Panel Fully Extended 8.8

httom of the Synthesizer 8-9

Model 8671A

contents

ILLUSTRATIONS (Cont’d)

Figure Page

8.33.

8.43.

8~35.

H-36.

8.37.

8-38.

H-39.

8.40.

8-11.

&i”42.

M-43.

8.44.

H”45.

H-16.

8.47.

H-48.

H-51.

8-54.

8.55.

M”5ti.

8.57.

8-58.

8.59.

MO.

8-61.

8.82.

8.63.

8.64.

8-65.

A2A3 160-240 MHz Assembly Component

Locations R-42

VCO 160-240 MHz Lllock Diagrams 8-43

VCO ‘160-240 MHz Assembly Schematic

Diagram 8-48

KM9 HP-IB Addresfi Assembly Cumponent

Localiuns 8.44

HP-It< Address Block Diagrams 8.45

HP-ID Address Assembly Schematic Diagram 8-45

P/O h2h7 Interface Assembly Component

and Tesl Point Locations 8.46

P/O Jntexfnce Block Dia@ams 8.47

P/O HP-Ii3 Interface Assembly Schematic

Diagram 8-47

P/O A2Al interface Assembly Component

Locations 8.48

P/O lntsrface Block Diagrams 8.49

P/O Interface Assembly Schematic Diagram 8-49

A2A10 Register 1 Assembly Component

Locations 8-50

Register 1 block Diagrams 8-51

Register 1 Assembly Schematic Diagram 8-51

P/O A2All Timing and Control Assembly

Componenl and Test Point Locations 8-52

P/O Timing and Control Block Diagrams 8-53

P/O Timing and Corltrul Assembly Schematic

Diagram 8-53

U/O A2All Timing and Control Assembly

Component and

Test

Point Localiuns 8-54

U/O Timing and Control Block Diagrams R-55

P/D Timing and Control Assembly Schematic

Diagram 8.55

P/O A2A8 Output Register Assembly

Component and ‘Test Point Locations 8-56

P/O Ch~lpul Register Klock Diagrams 8.57

P/O Output Register Assembly Schematic

Diagram 8-57

V/O h2AM Output llegister Assembly

Cumpununt and Test Point Locations 8.58

P/O Output Kegister Block Diagrams 8.59

P/O Oolpul Register Assrmhly Schematic

Diagram 8-59

I’/0 A2Al Krront Panel Assembly Component

Lucations 8.60

P/O Front Parwl Block Diagrams 8.61

P/O Front Panel Assembly Schematic

Diagram 8.61

P/O A2Al Front Panel Assembly

Component Locatiorrs 8.62

P/O Pront Panel Block Diagrams 8.63

P/O Front Panel Assembly Schfmatic

DiaKram 8-63

8-66.

8-67.

8”68.

8-69.

8.70.

8-71.

8.72,

s-73.

8.74.

8-75.

8.76.

8-77.

8.78.

8.79.

8.80.

8.81.

8.82.

S-83.

8.84.

8.85.

8.86.

8.87.

8.88.

S-89.

S-90.

8-91.

8.92.

R-93.

8.94.

8.95.

A3AlAl Reference J’hase Lock Board

Assembly Component and Test Point

Locations 8-64

Hefexsnce Phase Lock Block Diagrams 8.65

Refcrencc Phase Lock Assembly Schematic

Diagram 8-65

A3AlA2 100 MHz VCXO Assembly

Component, Adjustment, and Test

Point Locations 8-66

100 MHz VCXO Block iliagxams 8-67

100 MHz VCXO Assembly Schematic

Diagram 8-81

A3AlA3 M/N Phase Detector Assembly

Component and Test Point Locations 8-68

M/N Phase Deteclur Block Diagrams. 8.69

M/N Phase Detector Assembly Schematic

wiagxam 8.69

A3AlA4A2 M/N VCO Board Assembly

Component, Adjustment, and Test Point

Locations 8.70

M/N VCO Rlock Diagrams. 8-71

M/N VCO Assembly Schematic Diagram 8-71

A3AlA5 M/N Output Assembly Component

Locations 8-72

M/N Output Block Diagrams. 8-78

M/N Output Assembly Schematic Diagram 8-73

A3A5 DAC Asscmhly Component,

Adjustment, and Test Point Locations H-14

Wigital-Lo-Analog Converter Block

Diagrams. 8-75

Digital.to.Analog Converter Schematic

Diagram 8”75

A3A6 YTO Main Coil Driver Assembly

Component, Adjustment, and Test Point

Localions 8-76

YTO Main Coil Driver Block Diagrams 8.77

YTO Main Coil Driver Schematic Diagram 8.77

A3A9A5 YTO Sampler Assembly Component

Adjustment, and Test Point Locations R-78

YTO Sampler Block Diagrams 8.79

YTO Sampler Assembly Schematic

nisgram 8.79

ABAYA4 YTO Phase Detector Assembly

Component, Adjustment, and Test Point

Locations ; sao

YTO Phase Detector Block Diagrams R-81,

YTO Phase Detector Assembly Schematic

Diagram 8-81

A3A7 FM Driver Assembly Component,

Adjustment, and Test Point Locations 8-82

FM Driver Block Diagrams 8.83

FM Driver Assembly Schematic Diagram 8.83

contents

Model 8671A

ILLUSTRATIONS (Cont’d)

Figure

8.96, A3A2 Rectifier Assembly Component

Adjustment, and Test Point Locations

8~91. Ilcctifier Block Diagrams

8.98. Rectifier Assembly Schematic Diagram

8.99. A3A3 Positive Regulator Assembly,

Component, Adjustment, and

Test Point Locations

R-100. Positive Regulator Block Diagrams

8.101. Positive Regulator Assembly Schematic

Diagram

8~102. A3A4 Negative Regulator Assembly

Component and Test Point Locations

8.103. Negative Regulator Block Diagrams

8.104. Negative Regulator Assembly Schematic

13iagram

8.105. Rem& Operator’s Checks Test Setup

8.106. AI to A2 Interconnections

B”107. AI to A3 Interconnections

8.108. Major Assembly Locations

Table Page

Specifications l”2

Recommended Test Equipment. 1-6

3.1.

3-2.

3.3.

3-4.

3-5.

3.6.

3-7.

3.8.

3-9.

vi

Page

8.84

8-85

8.85

8-86

8-87

8.87

8-88

8.89

8-89

8-90

8.90

8-91

Figure

Page

8.109. A2A12 Motherboard Assembly Component

Locations

8.91

8.110. A3A10 RF Source Motherboard Component

Locations

8-93

8.111. A8AlA6 Reference and M/N Motherboard

Assembly Component and Connector

Locations

8.93

8.112. A3 Plug-in Circuit Board Adjustment and

Test Point Locations 8-93

8.113. A3A9 Assembly Locations 8-95

8.114. A3A9 Cable Connections

8-95

8.115. Major Assembly Locations 8-95

8.116. Bottom View Assembly Locations 8.95

8.117. Major Assembly Locations 8.97

E-118. Top View Assembly Locations 8-97

8.119. Top View Chassis Mounted Parts and

Assembly Locations 8.97

8.120. Top View A2 and A3 Assemblies Adjust-

ments and Test Point Locations

8.91

TABLES

USA Standard Code for Information

Interchange (ASCII) 2-3

Front Panel Features

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

Rear Panel Features ...................

3-3

Local Operator’s Checks

................ 3.4

Local Operating Instructions

.............. 3-6

Message Reference Table ................

3-9

Frequency Program Codes and Arguments.

... 3.10

FM Program Codes and Arguments

...... 3-11

RF Output Program Code ...........

.. 3.11

Programming Quick Reference Guide

....... 3-16

Record of Operational Verification Checks 4-3

Harmonic Level versus Percentage

Distortion 4-11

Performance Test Record 4-26

Table

Page

5”l.

5.2.

5-3.

6-l.

6.2.

6-3.

6-4.

l”1.

1.2.

8-l.

8.2.

8-3.

8.4.

8.5.

8-6.

8.7.

Factory Selected Components.

.........

Performance Test Failure and Required

Action ........................

Related Adjustments ................

Part Numbers for Exchange Assemblies

Reference Designations and Abbreviations.

Replaceable Parts

Code List of Manufacturers

Manual Changes

Summary of Changes by Component

HP-IB Diagnostic Program

Front Panel Status Annunciators

Overall Troubleshooting

M and N Numbers and Resulting Frequencies

Remote Operator’s Check

Controller Assembly (A2) Interconnections

Motherboard Assembly (A3AlO)

5-2

5.3

6-2

6.3

6-5

6.48

7-l

7-4

8-16

8”25

8-26

8.31

8.90

8.91

8.93

Model 8671A

Safety Considerations

SAFETY CONSIDERATIONS

GENERAL

This product and rt!latt!d documentation must be

revicwt!d f’or familiarization with safety markings

and instructions before operation. This product has

bwn designed and tested in accordance with inter-

national standards.

SAFETY SYMBOLS

A

f

Instruction manual symbol: the

prodwl will be marked with this

symbol when it is necessary fur

the user to refer to the instruc”

tion manual in order to protect

against damage (refer to Table

of Contents).

Indicates hazardcx~s voltages.

Indicates earth (ground) terminal.

‘The WARNING

sign

denotes a

hazard. It calls attention to a

procedure, practice, or 1:he like,

which, if not cvrrectlp Performed

or adhered to, could result in

personal injury. Do not proceed

beyond a WARNTNC sign until

the indicated conditions are fully

understood and met.

The CAIJTION sign denot,es a

hazard. It calls attention to an

operating procedure, pxactice, or

the like, which, if not correctly

P’rformed or adhered to, could

result in damage to or destruc-

tion of Part or all of the Product.

I,)<> not proceed beyond a CALJ-

TION sign until the indicated

conditions are fully understood

and met.

SAFETY EARTH GROUND

This is a Safety Class I product (provided with a

protective

earthing

terminal), An uninterruptible

safety earth ground must be provided from the

main power source to the product input wiring ter-

minals, power cord, or supplied power cord net.

Whenever it is likely that the protection has been

impaxed, the product must be made inoperative

and be secured against any unintended operation,

BEFORE APPLYING POWER

Verify that the product is configured to match

lhe

available

main power source per the input power

configuration instructions provided in thiv manual.

If this product is to be energized via an auto-tranrc-

former make sure the common terminal is con-

nected to the neutral

(grounded

side of mains

SUPPlY ),

SERVlCfNG

Any sewkin& adjustm,ent, maintenoncc,

or repair of

this product musl be per-

formed only by qualified personnel.

Adjustments described in thir: manwl

may be performed with, power supplied

to the product while proteclirx? couer.s

are rumoued. ISner~,y availahla ot many

points may> if contactnd. resL111. in per-

sonal injury,

vii

General Information

Model 8671A

MODEL 8671A

EXTENDER BOARDS

LINE POWER CABLE

FUSE

Figure 1.1. Model 8671A and Accessories Supplied

Model 8671A

General Information

SECTION I

GENERAL INFORMATiON

l-l. INTRODUCTION

l”2. ‘I’his manual contains information pertinent

to installing, operating, testing, adjusting, and ser-

vicing the Hewlett-Packard Model 86’71A Synthe-

sizer. The Model 8671A will generally be referred

lo as the Synthesizer throughout this manual.

l-3. Information pertaining to the Mewlett-

Packard Interface Bus (HP-IB) as it relates to the

Synthcsizcr is found in various sections of this

manual. Section VIII contains a diagnostic program

for checkout of ,HP-IB functions. A remote Opera-

tor’s Check is also found in Section VIII.

1-4. Figure 1-l shows the Synthesizer with all sup-

plied accessories.

I-5. Packaged with this manual is an Operating In-

l’ormation Supplement. This is simply a copy of the

first three sections of this manual. This supplement

should stay with the instrument for USC by the op-

erator. Additional copies of the Operating Informa-

tion Supplement may be ordered separately through

your nearest Hewlett-Packard office. ‘The part

number is listed on the title page of this manual.

1~6. On the title page of this manual, below the

manual pas1 number, is a “Microfiche” part num-

bcr. This number may

be used to

order 100 x 150

mm (4. x B-inch) microfilm transparencies of the

manual. Each microfiche contains up to 96 photo-

duplicates of the manual pages. The microfiche

package also includes the latest Manual Changes

supplement as well as all pcrtincnt Service Notes.

1.7. SPECIFICATIONS

1-8. Instrument specifications are listed in Table

1,-l. These specifications are ,the performance stan-

dards or limits against which the

instrument may

be tested.

1-9. SAFETY CONSlDERATlONS

l-10. This producl is a Safety Class I instrument

(provided with a protective earth terminal). The

instrument and manual should be reviewed for

safety markings and instructions before operation.

1-15. Serial Numbers.

Attached to this instrument

is a serial number Plato. The serial number is in the

form 1234A00123. The first four digits and the

letter comprise the serial prefix. The last five digits

form the sequential suffix that is unique to each in-

strument. The contents of this manual apply di-

rectly to instruments having the same serial num-

ber prefii(es) as listed under SERIAL NUMBERS

on the title page.

l-16. For information concerning a serial number

p&ix not listed on the title page or in the Manual

Changes supplement, contact your nearest Hewlett-

I’ackard office.

I-17. MANUAL CHANGE SUPPLEMENTS

1-18. An instrument manufactured after the print-

ing of this maqua may have a serial prefix that is

not listed on the title page. This unlisted serial pre-

fix indicates that the instrument is different from

those documented in this manual. The manual for

this instrument is supplied with a yellow Manual

Changes supplement that contains “change inform-

ation” that documents the differences.

1-11. The Synthesizer and all related documenta-

tion must be reviewed for familiarization with

safety markings and instructions before operation.

Refer to the Safety ConsiderationG page found at

the beginning of this manual for a summary of the

safety information.

l-12. Safety information pertinent to the task at

hand (installation, operation, performance testing,

adjustments, or service) is found throughout this

manual.

I-13. INSTRUMENTSCOVERED BY MANUAL

l-14. Options.

Electrical options 002, 003, 005,

and various mechanical options are documented in

this manual. The differencas are noted under the

appropriate paragraph such as Options in Section I,

the

Replaceable Parts J,ist

and the schematic

diagrams.

l-1.9. In addition to change information, the sup-

plement may contain information for correcting

1-l

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