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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
l-4
1-4
I,-4
l-5
l-5
l”5
1.5
1-5
l”6
2.1
2-J
2-J
2-l
2.1
2-J
2.2
2.2
2.4
2-4
2.4
2.4
2-6
2.6
2-6
3.1
3.1
3-l
3-J
3.1
3-l
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
3.12
3.12
S-J.2
3-13
3.13
3”13
3.13
4-l
4-l
4.1
4-J
4-l
4-l
4-l
4.3
4-4
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-l
5.1
5-J.
5-J
5”l
5-4
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-l
6.1
6-l
6-l
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
8.90
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
5-2
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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