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E i HEWLETTPACKARDOPERATING ND SERVICEMANUAL

MODEL 3325ASYNTHESIZER~FUNCTIONENERATORSerial Numbers: All

IMPORTANT NOTICEThis manualapplies o all instruments.Earlierversionsof the 3325A, however,may differin design rom the instruments his revisiondocumentsdirectly. Designand documenta-tions changes re identified by a A symbol.The deltasymbols eferservicing ersonnelothe backdating section SectionVII) wherespecific nformation re garding he change spresented.

To prevent potential fire or shock hazard, do notexpose equipment to rain or moisture.

Manual Part No. 03325-90002Microfiche Part No. 03325-90052

@ Copyright Hewlett-PackardCompany 1978,1981,1984P.O. Box 69, Marysville, Washington98270Printed: May 1384

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m HEWLETTPACKARDSAFETY SUMMARY

The following gensral safety prscautions must be obssrvad during a ll phnsss of operation, ssrwice , and rspair of thisinstrument. Failure to comply with these precautions or with specifi c warnings elsewhere in this manual violatesSafety standards of design, manufacture, and intended usa nf ths instrument Hewlett-Packard Company assumtis noliabil ity for the custom&s failure to comply with thsse requirements; This is B Ssfsty Class 1 instrument.GROUND THE INSTRUMENTTo minimize shock hazard, the instrument chass is and cabinet must be connected to an elec-trical ground. The instrument is equipped with a three-conductor ac power cable. The powercable must either be plugged into an approved three-contact electrical outlet or used with athree-contact to two-contact adapter with the grounding wire (green) firmly connected to analactrical ground (safety ground) at the power outlet. The power jack and mating plug of thepower cable meet International Electro technica l Commission (IECI safety standards.DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHEREDo not operate the instrument in the presence of flammable gases or fumes. Operation of anyelectrical instrument in such an environment constitutes a definite safety hazard.KEE P AWA Y FROM LIVE CIRCUITSOperating personnel must not remove instrument covers. Component replacement and internaladjustments must be made by qualified maintenance personnel. Do not replace componentswith power cable connected. Under certain conditions, dangerous voltages may exist even withthe power cable removed. To avoid injur ies, always disconnect power and discharge circuitsbefore touching them.DO NOT SERVfCE OR ADJUST ALONEDo not attempt internal service or adjustment unless another person, capable of rendering firs taid and resuscitat ion, is present.DO HOT SUBSTITUTE PARTS OR MODIFY INSTRUMENTBecausa of the danger of introducing additional hazards, do not insta ll substitute parts or per-form any unauthorized modification to the instrument. Return the instrument to a Hewlett-Packard Sales and Service Office for service and repair to ensure that safety features are main-tained.OAMEROUS PROCEDUREWARNINGSWarnings, such as tha example below, precede potentially dangerous procedures throughoutthis manual. Instructions contained in the warnings must be followed,

piGi-Oangerous voltages, capable of causing death, are present in this instrument, Use BX.treme caution when handling, testing, and adjusting.

A

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SAFETYSYMBOLSGeneralDefinitions of Safety Symbols Used On Equipment or In Manuals.

AInstruction manual symbol: the product will be marked with thissymbol when it is necessary or the user to refer to the instructionmanual in order to protect against damage to rhe instrument.

fIndicates dangerous voltage (terminals fed from the interior byvoltage exceeding 1000volts must be so marked).

0 Protective conductor terminal. For protection against electrical+ OR * shock in case of a fault. Used with field wiring terminals to in-dicate the terminal which must be connected to ground beforeoperating equipment.0

Low-noise or noiseless,clean ground (earth) terminal. Used for asignal common, as well as providing protection against electricalshock in caseof a fault. A terminal marked with this symbol mustbe connected to ground in the manner described n the installation(operating) manual, and before operating the equipment.

d7 OR L tures.Frame or chassis erminal. A connection to the frame (chassis)ofthe equipment which normally includes all exposed metal struc-

b Alternating current (power line).--- Direct current (power line).

Alternating or direct current (power line).

Lpi-, The WARNING sign denotes a hazard. It calls attention to a pro-cedure, practice, condition or the like, which, if not correcrly per-formed or adhered to, could result in injury or death to personnel.The CAUTION sign denotes a hazard. It calls attention to an

m operating procedure, practice, condition or the like, which,if notcorrectly performed or adhe red to, could result in damage to ordestruction of part or all of the product.NOTE: The NOTE sign denotes important information. It calls attentionto procedure, practice, condition or the like, which is essential tohighlight.

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Model 3325A Table of Contents

TABLE OF CONTENTSSection Page1. GENERAL INFORMATION .............. 1-l1-l. Introduction ....................... l-1l-5. Instrument Description ............ .1-ll-9. Specifications. .................... l-1I-I I. SupplementalOperating Information l-ll-13. RemoteContro l ................... .1-ll-15. Options .......................... .1-l1 I 7. Aceessorics upplied. .............. l-5l-19. Accessories vailable ............... l-51-21. Instrument and Manual Identification l-6l-24. Safety Considerations.............. l-61-27. Recommended est Equipment ...... l-6Section Page11. INSTALLATION ....................... .2-l2-l. Introduc tion. ..................... .2-l2-3. Initial Inspection. ................. .2-l2-5. PreparationFor Use .............. -2-l2-6. Power Requirements............ .2-l2-8. Line Voltage Selection .......... .2-l2-10. Power Cable ................ ,.,.2-l2-12. HP-IB Connections ............. .2-l2-15. 3325A Listen/Talk Address ...... .2-32-17. HP-IB Description .............. .2-42-19. ConnectingOven Option 001 ..... .2-42-21. OperatingEnvironment ............ .2-42-23. Cooling System ................ -2-4

2-26. Bench Opera tion ............... .2-4Z-28. Rack Mounting ................. .2-42-30. Storageand Shipment ............. .2-42-31. Environment ..................... .2-42-33. Instrument Identification........... .2-h2-35. Packaging. ...................... .2-6Section Page111. OPERATION., ......................... .3-l3-l. Introduction ...................... .3-l3-3. Panel Features................... .3-33-S. Power/Warm-Up ................. .3-33.8. Initial Conditions ................. .3-33.10. Self Test ......................... .3-3

3-12. Front/Rear Signal Output .......... .3-33-14. sync Output................ .......3- 33.16. External Referencenput ........... .3-43-18. 1OMHzOven Option 001 .......... .3-43-20. Manual Programming ............. .3-43-22. Clear Display. .................. .3-4

Section3-24.3-26.3-28.3-30.3-32.3-34.3-36.3-39.3-41.3-43.3-46.3-49.3-55.3-58.3-60.3-62.3-66.3-68.3.70,

PageEntry Errors ................... .3-4Function Selection .............. -3-4FrequencyEntry ................ -3-4Frequency imits ............... .3-4FrequencyDisplay and Resolution .3-5Auxiliary Output (SineFunctionOnly)3-5Amplitude Entry ................ .3-5Amplitude Calibration ........... .3-5High Voltage Output Option 002 .3-hDC Offset. ..................... .3-6PhaseEntry .................... .3-7FrequencySweep. .............. .3-7SweepMarker .................. .3-9SweepX Drive Output ......... .3-10SweepZ Blank Output ......... .3-10Amplitude Modulation. ......... .3-10PhaseModulation. ............. .3-l IModify Keys .................. .3-l IStore and Recall ............... .3-l 13-72. OperatorsChecks3.74. Self Test3-76. Outpu t Checks..............3-78. OperatorsMaintenance.3-81. HP-B Operation3-83. GeneralHP-IB Description3-88. Definition of HP-IB Termsand Concepts

3-89. Basic DeviceCommunicationCapability.3-91. MessageDefinitions3-93. 3325A Responseo Messages3-95. HP-IB Work Sheet..3-97. HP-IB Addressing..3-100. 3325A RemoteProgramming3-101.3.103.3.107.3-109.3-111.3.113.3.115.3-118.3.120.3-122.3-124.3-126.

. ..3-II. ..3-11.3-11.3-12.3-12-3-13.3-13.3-14-3-14.3-14.3-14.3-14.3-143325A HP-IB Capabilities .3-14Developingan HP-IB Program .3-15Universaland Addressed ommands3-17Placing the 3325A n Remote. .3-17The 3325AAddress . .3-173325A Data Message ormats .3-17Data Transfer Mode. -3-20

ProgrammingData Transfer Mode 3-21Programming Entry Parameters .3-21ProgrammingWaveform Function 3-21ProgrammingBinary (On or Oft?Functions .3-22Programming SelectionFur,,~ons .3-22

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Table of Contents Model 3325ATABLE OF CONTENTS IContd ) -

3.128. ProgrammingExecution Functions3-223-130. ProgrammingAmplitude Units

4-47. Ramp RetraceTime .4-16 @

3-132.3-134.3-136.3.138.3-140.3.142.3.144.3-146.3-148.3.150.3-152.3-154.3.156.

Conversion .3-23ProgrammingStorageRegisters , .3-23ServiceRequests .3-23Serial Poll., .3-23StatusByte.. .3-24Busy Flag .3-24SweepFlag.. .3-24Masking or Enabling ServiceRequests .3-24interrogating Program Errors. -3-24InterrogatingEntry Parameters .3-25InterrogatingFunctionhrterrogatingMiscellaneousParameters -3-26Using the InterrogateCapability ,3163325AProgramming Procedure .3-27

Appendix A. Meta Messages lockDiagrammed ........................... .A-1Appendix B. Programming The Model 3325Awith the 9825ACalcula tor ............... .B-1

Section PageIV. PERFORMANCE TESTS ................ -4-l4-l. Introduction. ..................... .4-l4-3. Calculator-ControlledTest ......... .4-l4-5. OperationalVerification ........... .4-l4-8. RequiredTest Equipment ........ .4-l4-10 . Self Test ....................... .4-l4.12. Sine Wave Verification .......... .4-l4.14. SquareWave Verification ........ .4-24-16. Triangle and Ramp Verification .. .4-34-18. Amplitude FlatnessCheck. ....... .4-34-20. Sync Output Check ............. .4-44-22. FrequencyAccuracy ............. .4-44-24. Output Level and AttenuatorCheck ........................ ..4- 44.26. Harmonic Distortion Test ........ .4-54-28. Close-InSpurious SignalTest .... .4-64.30. HP-IB InterfaceTest ............ .4-64-32. PerformanceTests ............... .4-l 14-35. Equipment Required. .......... .4-124-37. Harmonic Distortion Test ....... -4-124-39. SpuriousSignal Tests .......... .4-134-41. IntegratedPhaseNoise Test ..... .4-154-43. Amplitude Modulation EnvelopeDistortion Test ................ .4-154-45. SquareWave RiseTimeand Abberations .............. .4-16

4-49.4-51.4-53.4-55.4-57.4-59.4-61.4-63.4-654-67.4.69.4.71.

Sync-OutputTest .............. -4-16SquareWave Symmetry. ........ .4-16FrequencyAccuracy ............ .4-17Phase ncrementAccuracy ...... .4-17PhaseModulation Linearity ..... .4-19Amplitude Accuracy. ........... .4-20DC Offset Accuracy (DC Only), .4-23DC Offset Accuracywith AC Functions ............. .4-25Triangle Linearit y .............. .4-25X Drive Linearit y .............. .4-27Ramp Period Variation ......... -4-29HP-IB InterfaceTest ........... -4-30Section PageV. ADJUSTMENTS ........................ .5-l5-l. Introduction. ..................... .5-l5-3. Equipment Required. ............. .5-25-5. Adjustment Procedures ........... .5-25-7.5-8.5-9.

5-10.5-11.5-12.5-13.5-14.5-15.5-16.5.17.5-18.

Section

Power Supply .................. .5-2D/A ConverterOffset ........... -5-2Voltage Controlled Oscillator(VCO Frequency) .............. .5-2Analog Phase nterpolation (API). 5-230MHz ReferenceOscillator ....... 5-3Option 001 High StabilityFrequencyReference ........... .5-3Sine Wave Amplitude Calibration .5-3X Drive. ....................... .5-4Amplifier Bias Adjustment ....... .5-4Ramp Stability...................5- 5Amplitude Flatness, ............ .5-5Mixer SpuriousSignal ... .1. ..... .5-6PageVI. REPLACEABLE PARTS ................ .6-l6-l. Introduction. ..................... -6-l6-4. Ordering Information .............. .6-l6-6. Non-L isted Parts. ................. .6-l6-8. Proprie tary Parts ................. .6-l6-10 . Printed Circuit Assemblies ........ .6-l

seaiorl Page,VII. MANUAL BACKDATING -7-l7-l.7-3.7-5.7-8.7-9.

Introduction.. .7-lFormat . . . . . . . . . . . . . . . . . . . . . . . . ...7-1ChangeSheets nd ServiceNotes .7-lBackdating Information. .7-2ServiceGroup A KeyboardandDisplay (03325-66505)l .7-2

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Tableof Contents Model 3325ALIST OF TABLES Kmtd)

Table3-5.3-6.3-l.3-8,3-9.

3-10.3-11.4-l.4-2.5-1.5-2.6-I,6-2,6-3,7-l7-27-3.

PageGeneral nterfaceManagementLines3-14Definition of Meta Messages..... .3-153325A Implementationof Messages 3-16InterfaceFunctions .............. .3-16Summary of 3325A Programming(ASCII). .................... , . , . .3-I8ProgrammingCodes ............. .3-19SRQ Mask/Enable Data .......... .3-25Test Equipment Required orOperationalVerification ........... .4-ZTest Equipment Requiredfor PerformanceTests ............ .4-11Test Equipment RequiredForAdjustments ..................... .5-lPaddingValues ................... .5-6List of Abbrevia tions ............. -6-ZList of Manufacturers ............. .6-2Replaceable arts List ............. .6-33325A Circuit Board Revisions ...... l-2A5 Board Revisions .............. .7-2A6 Board Revisions ..... ... .... .7-3

2-I.2-2.2-3.2-4.3-I.3-2.

4-I.

Line Voltage Selection ............ .2-ZPower Cables .................... .2-3HP-IB Connector ................. .2-3Rack Mount and Handle Kits ...... .2-6Front and Rear Panel Controls ..... .3-ZMaximum DC Offset withAC Functions .................... .3-8InterfaceConnectionsandBus Structure . ................... .3-13Harmonic Distortion Verification(High Voltage Output). ............ .4-5Mixer SpuriousTest .............. .4-I3IntegratedPhaseNoise Test ....... .4-14AM EnvelopeDistortion .......... .4-15SquareWave Symmetry .......... .4-17FrequencyAccuracy ............. -4-18Phase ncrementAccuracy ........ -4-18PhaseModulation Linearity ....... .4-19Amplitude Accuracy and Flatness . .4-24Triangle and Ramp Linearity Test. .4-26Triangle Lineari ty Test ........... .4-27X Drive Lineari ty Test. ........... .4-29X Drive Lineari ty Test. ........... .4-30Ramp ResetWaveform ........... .4-30

5-I *5-2.5-3.6-l.7-l.7-2.3-3.7-3.

4-2.4-3.4-4.4-5.4-6.4-7.4-8.4-9.4-10.4-11.4-12.4-13.4-14.

7-4.7-5.7-6.7-7.7-8.

Ramp ResetWaveform .5-5Amplitude FlatnessAdjustment ,526Location of Adjustments. .5-7Location of Parts 6-31/6-32Processor nterrupt Circuitry (SerialNumbers 1748A00230 nd Below) .7-4Schematic nd Board Location of Rll andR12 (SerialNumbers 1748A02600 ndBel0w)............................7-4VCO Circuitry Serial Numbers1748A02475 nd Below -7-6VCO Circuitry - Serial Numbers1748A03226o 1748A07390 .7-7HINV Clocking Circuitry SerialNumbers1748A00230nd Below .7-8A21U8 Gating Circuitry - Serial Numbers1748A02475nd Below l-9A21U8 Cating Circuitry Serial.Numbers1748A02476o 1748A07390 .7-9Integratorand PhaseModulation CircuitrySerial Numbers 1748A02475and Below .7-IOSample/Hold Circuitry (Serial Numbers1748A02475 nd Below) .7-l 1

Table7-4.7-s.7-6.I-1.7-8.l-9.7-10.7-11.7-12.7-13.7-14,7-15.8-l.8-2.8.3.s-4.8-5.8-6.

PageA6 Board Revisions ............. ..7- 3A21(Al) Board Revisions ......... .7-6A21(Al) Board Revisions ......... .7-SA21(Al) Board Revisions ........ .7-10A3 Board Revisions ............. .7-12A3 Board Revisions ............. .7-14A14(A4) Board Revisions ........ .7-16A14(A4) Board Revisions ........ .7-I7A14(.44)Board Revisions ......... -7-21A23(A7) Board Revisions ......... .7-22A14(A4) Board Revisions ......... .7-24A2 Board Revisions ............. .7-25Attenuation and VoltageRanges ... .8-20Assembly/CableCompatibilityfor Serial Numbers 1748A04250and Below. ....................... .S-25Test Equipment for Troubleshooting S-26Adjustments RequiredAfter Repair .8-28Trouble Symptoms ............... .8-29Mnemonic Dictionary. .............. S-30

LIST OF ILLUSTRATlONS @Figure Page Figure Page

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Model 3325A Table of Contents

TABLE OF CONTENTS (Contd)Figure

7-10.7-11.

7-12.7-13.7-14.7-15.7-16.

a 7-20,8-l.8-2.8-3.8-4.8-S.8-6.8-7.8-8.8-9.s-10.S-11.

8-12.8-13.S-14.S-15.

S-16.S-17.8.18.S-19.8-20.S-21.

PageU14 Biasing Circuitry (Seria l Numbers1748AOO620 and Below) .7-12Sine Amplitude Control and AmplitudeModulation Circuitr y (Serial Numbers1748A04675 and Below) _, .7-13Mixer Drive r Circuitry (Seria l Numbers1748A04675 and Below) .7-15DC Offset Control (Serial Numbers1748A01075 and R&w) .7-18WC Offset Control (Serial Numbers1748A08790to 1748A01076)........7-18Amplitude Control Circuitr y (Seria lNumbers 1748A05825 and Below) .7-19Amplitude Control Circuitr y (Seria lNumbers 1748A05826 to1748A08790) .7-20Output Amplifier (Seria l Numbers1748A01900 and below). _, _, .7-21Relay Drive Circuitr y (Seria l Numbers1748AO1075 and Below) .7-23Location Of F2 (Seria l Numbers1748AO5825 to 1748A01076). -7.2Gj, 15V Regulator (Seria l Numbers1748A01075 and Below) ,7-26

Simplified Block Diagram .8-2Basi c Block Diagram, Logic Circuits .8-2Keyboard and Display Block Diagram 8-3HP-IB Data Input Path. .8-4HP-IB Data Output Path .8-4HP-IB Management and Handshake ,8-SBasic Block Diagram of ControlCircuits .8-6Phase Lock Loop -8-7Phase Detector .8-8Integrator Output .8-9Addition of D/A Converter andPulse Remove Blocks .. .8-9Phase Accumulation. -8-10Divide By N Counter . . . . . .8-l 1External Reference Phase Lock LoopBlock Diagram . . . .8-12Level Control and AmplitudeModulation -8-13Mixer Diagram .8-14Preset Counters. .8-14D/A Converter -8-15DAC Sample/Hold.. ,8-15Enable Signals For FunctionSwitching _, .8-17Simplified Illustration of TriangleGencration .8-18

Figure8-22. Simplified Illustration of Ramp8.23. Generation .8-18Marker and X Drive Start-Stop8-24.8-25.S-26.8-27.

Flip-Flops S-20X Drive Ramp Output. .8-21Power Supply Standby/On Circuit .8-22Sine Amplitude Control Path S-23/8-24Adapter Cable . . . .8-27X-B(a). Access to Keverse Side of

Page

8-28(b). Basi c Troubleshooting Procedure .8-318-29. Signature Analy sis Test 4 .8-A-5S-30. Keyboard and Wisplay, A5 S-A-7/8-A-S8-3 l(a). Signature An alysis Test 3 8-B-5/8-8-68-3 l(b). Signature Analysis Test 3 .8-B-7/8-B-88-31(c). Signature Analysis Test 3. .3 8-B-98-32. HP-IB Circuits, A6 .8-B-l 18-33(a). Signature Analysis Test 1 S-C-19/8-C-208-33(b). Signature Analysis Test 1 8-C-21/8-C-228-34(a). Signature Analysis Test 2 8-C-25/8-C-268-34(b). Signature Analysis Test 2 S-C-27/8-C-288-35(a). Signature Analysis Test 5 8-C-31/8-C-328-35(b). Signature Analysis Test 5 8-C-33/8-C-348-35(c). Signature Analysis Test 5 .8-C-358-36. Control Circuits, A6 .8-C-378-37. VCO, A21, and VCO Buffer,A3 .8-D-7/8-D-88-38. + NJ, Counter, A21 S-E-3/8-E -48-F-I. TP9 and TPlO Waveforms .8-F-48-39. Fractional N Analog, A21 .8-F-5/8-F-68-G-l. Sine hnDhKk Control Path 8-G-28-40. 30MHz I&ference and Dividers,~-H-I8-41.8-I-l.8-42.

A3 .8-G-3/8-G-4Sine Amplitude Control Path -8-H-2Mixer, A3 .8-H-3/8-H-4Sine Amplitude Control Path .8-l-3D/A Converter and Sample/Hold,

8-J-l.8-43.Al4. .8-I-5/8-1-6Sine Amplitude Control Path -8-J-4Function Circuits, Al4 S-J-7/8-5-88-K-l. Sine Amplitude Control Path .8-K-2

8-44.8-45.8-46.8-41.8-48.8-49.8-50.

Output Amplifier, Al4 8-K-5/8-K-6Relay Wrivers, A14, and Attenuator,A23 . . . . . . . . . . . . . . . . . . . ...8-L-3/8-L-4High Voltage Output Option 002A8 .8-M-3/8-M-4High Stability Reference Option 001,A9 . . . . . . . . . . . . . . . . . . . ...8-M-S/S-M-6Sweep Drive Circuits, Al4 .8-N-3/8-N-4Power Supplies, A2 .8-O-3/8-0-4Function Block Diagram .8-P-l /8-P-2

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Model 3325A

SECTIONGENERALNFORMATICIN

General Information

1-l. INTRUUUCTION.l-2. The Operating and Service ManuaI contains infor-mation required to install, operate, test, adjust, and WV-ice the Hewlett-Packard Model 3325A Synthesizer/Func-tion Generator. The Operating Manual supplement is acopy of the first three sections of the Operating and Serv-ice Manual, plus the Operational Verification proceduresfrom Section IV. The supplcmsnt should be kept withthe instrument for use by the operator. The part num-bers of both the Operating and Service Manual and theOperating Manual supplement are Shown on the titIepages.l-3. Also shown on the title page of this manual is aMicrofiche part number. This number can be used toorder 4 x 6 inch transparencies of the Operating andService Manual, Each Microfiche contains up to 96photo-duplicates of the manual pages, The Microfichepackage includes the latest Manual Changes supplementas well as pertinent Service Notes.1-4. Additional cop& of the Operating and ServiceManual, Operating Information Supplement, or ServiceNo&$ can be ordered through your nearest Hewlett-Packard Sales and Service Office. (A list of these officesis provided at the end of this manual.)1-5. INSTRUMENT DESCRIPTION.f-4. The Mode1 3325A Synthesizer/Functicm Generatorproducea the following signals at a minimum frequencyof 1 pI+z and maximum frequency of:

Sine wave 20 MHzSquare wave 10 MHzTriangIe 10 kHzPosit ive slope ramp 10 kHzNegative slope ramp IO kHzFrequency may be seiected with up to eleven digits ofresolution. Output amplitude is 1 mV to 10 V peak-to-peak. The output level may also be selected or displayedin V rms or in dBm (50 ohms). Any function may be dcoffset up to f 4.5 V, or the output may be dc only up toL 5 V. An optitmal high voltage output produces up to40 V p-p into ~500 ohms load.1-7. Frequency sweep of all functicm$ is provided ialinear OJ lbg sweep, at sweep times of 10 milliseconds to99.99 seconds for linear sweep. Maximum time for logsweep is 99.99 seconds and minimum time is 2 secondsfor sir@ log sweep and 0.1 second for continuous logsweep. Single linear sweep may be up or down, whilecontinuous sweep is up/down/up, etc., in the linearmode and up/up, etc., in log mode.

l-8. The Model 3325A is fully programmable throughthe rear panel Hewlett-Packard Interface Bus (HP-IB)connector. A device such as a programmable calculatoris capable of remoteIy controIling the 3325A. Interfaceinformation is given in Section II of this manual, andprogramming inf0rmaticm is in Section III.l-9. SPECIFICATIONS.I-10. Instrument specifications are listed in Table 1-I.These specifications are the performance standards orlimi ts against which the instrument is tested. Anychanges in specifications due to manufacturing, designor traceabil ity to the U.S. Nationai Bureau of Standardsare included in Table l-l of this manual and/or theManual Changes Supplement.

1-l 1. SUPPLEMENTAL OPERATING INFORMATION.I-12, Table 1-2 contains information describing generaloperating characteristics of the 3325A, This informa-tion is supplemental operating information and is not tobe considered as specifications.l-13. REMOTE CONTRcll.1-14. Table l-3 lists the HP-IB interface capabilit ies ofthe Model 332SA in conformity with IEEE Standard483-1978, Standard Digital Interface for ProgrammableInstrumentation. HP-II3 response times are given inTable 1-4.1-I 5. UPTIDNS.1-16. The following options extend the frcquebcystabil ity and output amplitude capabilit ies of the Model33251%:

Option 001 High Stabi lity Frequency ReferenceOption 002 High Voltage OutputThe following options indicate the line voltage to whichthe instrument was set at the factory:

Option 100Option 120Option XXIOption 240

Nominal 100 V acNominal I20 V acNominal 220 V acNominal 240 V ac

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General hfmnation Model 3325A

Table 1.1. Spec ifications.WNCTIGNG AND FNEGUENCIEG

Sine WBYWSign al Output ,FrOt or Rear Pane l,:

0.000 001 Hz to 20 999 999.999 Hz

Auxiliary Output ,Rear Panel,:

AMPLITUGEAmplitude Accuracy with no Attenuation lAttenuatorrange 1) into 50 ohm Load. INo D.C. offset1

Function and Tolerance relative tofrequency range programmed amplitude

21 000 000.000 Hz to 60 999 999.999 HzUnderrange fo 19 000 000.001 Hz

Square Wave: 0.000 001 Hz to 10 999 999.999 Hz ,001 Hz to 100 kHzTriangle: 0.000 001 Hz to 10 999.999 999 HzPositive and Negative Slope Ramp:

0.000 001 Hz to 10 999.999 999 Hz,001 Hz to 2 kHz

nlEGENCY NEGGLUTlGN1 pHz for frequencies below 100 kHz1 mHz for freqecies 100 kHr and higher

mEGENCY ACCURACY ,Standard IstrY.et,* 5 x 10~6 of selected abe ,20 to 3OCI

FNEGUENCY STAGll,TY lstandard IitNmG* 5 x 10~6 per yew 1200 to 3ooc1

SIGNAL CHARACTERISTICSSine Wave:

Harmonic Distortion relative to the amplitude of thefundamental frequency at full output on each range

,001 Hz to 500 Hz500 Hz to 10 kHzFlatness with no attenuation Tolerance relative to(Attenuator Range 1 I into programmed amplitude ata 50 Ohm load 1 kHz

Amp litude accuracy with Tolsrance relative to0.~2. offset and no programmed amplitude.attenuation IRange 1 b intoa 50 ohm load.

Spurious: All non-harmonically related output signals willbe more than 70d8 below the carrier (-60d8 with DC off-set). or less than -9OdBm. whichever is greater.Phase N oise: r -6Od8 (Option 001 Only) for a 30kHzband centered on a 20MHz carrier bxcluding * IHzabout the carrierI.

square wave:Rise/Fall Time: c 20 nanoseconds. 10% to 90% at fullOUtpUtSymmetry: c .02% of period + 3 nanosecondsOvershoot: d 5% of peak to peak amplitude at full output

Triangle:Linearity, 10% to 90%. best fit straight line:* 0.05% of full p-p wt,wf for each range

Ramps iPositive or Negative Slope):Linearity, 10% to 90%, best fit straight line: * 0.05%of full p-p output for each ra ngeRetrace Time: _ 3 microseconds, 90% to 10%Ramp Period V ariation: < f 1 % of period. maximum

,001 Hz to 500 Hz500 Hz to 10 kHzAttenuator Accuracy lthese Tolerance relative toerrors are additive with the programmed amplitude.ampli tude accuracy errors1,001 Hz to 20 kHzAttenuator Range 1 No Error,001 Hz to 100 kHzAttenuator ranges f 0.1 d6

2 through 8100 kHzta 10 MHzAttenuator ranges + 0.2 d6

2 through 810 MHz to 20 MHzAffenuato r ranges f 0.2 d6

2 through 4Attenuator ranges zk 0.5 dE

5 through 8

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Model 3325A General InformationTable l-l. Soacifications Kontdl.

Accuracy of DC Offset lint0 50 ohms): Agin g Rate: * 5 x 10.8 per week (after 72 hoursDC Only iNo AC Function): * 0.4% of full peak ow continuwe operationsPf far each range* * 1 x 10~ per month ,after 15 &ScOtinOS operation,Except lowest attenua tor range where accuracy is *20 p.DC + AC, 5 1 MHz: f 1.2%. Ramps f 2.4%DC + AC. > 1 MHz: t 3%

OPTION002HIS OLTASE OUTPUT

AMPLITUOE MOOULATIDN lof Sins Function only) Frequency Range:Modulation Envelope Distortion: - 30 dB to 80% modula- Sine and Square Wave: 1 pHz to 1 MHztion at 1 klir, 0 v dc OffSet Triangle and Ramps: 1 &Hz lo 10 ktiz

PHASE OFFSETRange: * 719.9 with respect to arbitrary etarfingphase, or assigned zero phaseResolution: 0.1 0Stability: + 1 o phase,OCln~remen t Accuracy: tO.2O

PHASE MOOULATIOS

Amplitude:Range: 4mp-p to 4ovp-p t 2 500D. < 5OOPF load)maximum output current, f 4OmAAccuracy (at 2 kHz): -t 2% of full output for eachrangeFlatness: + 10% of programmed amplitude

DC Offset:Linearity (Sine Function): 5 0.5%. best fit straight line Range: 4 times the range of the standard instrument

SYNC OUTPUTOutput Levels into 50 ohms:

Accuracy: -t ,I % + 25 m, of full output for eachrange

Square wave with Vhi gh 2 + 1.W. Vlow 5 + 0.NX ORlYE OUTPUT

Signal Characteristics:Sine Wave Harmonic Distortion lrelafive to the fun-damenral frequency at full owwt into 2 500 ohms.< 500 PF,

Amplitude: 0 to + IO V dc linear ramp proportional tosweep frequency (sweep up only)Linearity. 10% to 90%. bat fit straight line:* 0.1% of final value. Specified for all linear sweep

widths which are integral multiples of the minimumsweep width for each function and sweep time.

OPTION001HIS STABILITY FREWESCY REPERWZE

Ambient Stability: * 5 x 10~8 (On to 55OC referenced to+ 3ooc,

square wave:RiseiFall Time: 5 125 nanoseconds, 10% to 90% atfull output with r 500 ohm, < 5OOpF loadOvershoot: < 10% of peak ampli tude with z 500ohm, < 500 pF load

Table 1.2 Supplemental InformationMAN StONAt OUTPUT

SO R ImpedanceBNC Connector. switchable to front or rear panel (notswitchable with Option 0021

4 30 299.9 mv to 100.0 mv5 100 99.99 mv to 30.00 mv6 300 29.99 mv to 10.00 mv7 1000 9.999 mv to 3.000 mv8 3000 2.999 mV to 1.000 mV

DC Offset Only:May be floated a maximum of * 42 V peak lac + dcifrom chassis (earth) groundAmplitude Ranges:

All AC Functions (with no dc offset):Range Attenuation Amplitude

NO. Factor ~Peak~to-Peak,1 1 to.00 v to 3.000 v2 3 2.999 v to 1.000 v3 10 999.9 mv to 300.0 mv

5.000 v 20 1.500 v1.499 V to 500.0 mV

499.9 mv to 150.0 mv149.9 mv to 50.00 mv49.99 mv to 15.00 mv14.99 mv to 5.000 mv4.999 mv to 1.500 mV1.499 mv to 1.000 mV

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General Information Model 3325ATable 1.2. Suoolemental Information IContdl..

AC Function Wifh DC OffsetRang ? Attenuation Maximum DC Min. DC

No. Factor ,+ or-b ,+ or -,1 1 9.996 v to 1.000 v 1 .ooo mv to 4.500 v 1.000 mv2 3 999.9 mv fO 333.4 mv 1.166Vto1.4ssV 0.100 mv3 10 333.3 mv fO 100.0 mv 333.3 mv to 450.0 mv 0.100 mv4 30 99.99 mv fO 33.34 mv 116.6 mv to 149.9 mv 0.010 mv5 100 33.33 mv to 10.00 mv 33.33 mv to 45.00 mv 0.010 mv6 300 9.999 mv fO 3.334 mv 11.66 mv to 14.99 mv 0.001 mv7 1000 3.333 mv fO 1.000 mv 3.333 mv 4.500 mvo 0.001 mv

High Voltage Output Option 002:Ampl irude and Ranges: 4 times the standard instrmerit amplitudes

Output Impedance: < 2 fl af DC to < 10 n at 1 MHzSquare Wave Settling Time: < 1 ps to Settle to within.05% cd final value for frequencies of 10 Hz to 500 kHz,tested at full ofpt with no load

Sweep Time:linear Swee p: 0.01 second to 99.99 seconds (singleor continuous)Log sweep:

Sing le Swee p: 2 seconds to 99.99 secondsContinuou s Sweep : 0.1 second to 99.99 seconds

Maximum Sweep W idth: 1 Hz to maximum frequency ofthe function selectedMinimum Sweep Width ILinearl:

Minimum Sweep WidthSweep Time Sweep Time

Function 0.01 second 99.99 secondsSine 0.1 mHz 999.9 mHzsquare 0.05 mHz 499.5 mHzTriangle 0.005 mti2 49.95 mHzRamps 0.01 rnH2 99.99 mHz

Minimum Sweep Width (Log): 1 decadePhase Continuity: Sweep is phase continuous over thef,, frequency range

Standard Instrument: 20 minutes to withi n specified ac-curecyOption 001 High Stability Frequency Reference:

Reference will be within f 1 x 10. of final value 15minutes after turn-on at 25OC far an off time of lessthan 24 hours

Reference: For phase-locking the 3325A to an externalfrequency reference of 10 MHz or a subharmonic of10 MHz down ta 1 MHz. Level must be 0 dSm to+ 20 dSm info 50 ohms. Rear panel BNC connector.

Amplitude Modulation Input (Sine Function Onlyl:Modulation depth at full ofpt for each range:Oto100%Modul ation frequency range: DC to 500 kHz IO to21 MHz carrier frequency)Sensitivity: 5 V peak for 100% modulationInput Im,,edance: 10 klIConnector: Rear panel BNC

Phase Modulation:Modul ation Frequency Range: DC to 5 kHrModulation Depth

SineSquareTriangleRamps

Depth ,+ or -,8500425=

42.5O950

Input Impedance: 20 kSConnector: Rear panel SNC

AUXILIARY OUTPUTS Msy be floated a maximum of *42 V peak Iac + dc:from chassis Ieil rfhl ground1

Frequency Range: 21 MHz to 60.999 999 999 MHz.with underrange coverage to 19.000 000 001 MHzAmplitude: 0 dSmOutput Impedance : 50 ohmsConnector: Rear panel BNC

1 MHz Reference Output lfor phase-locking other in-strumenrs to 3325A):

Amplitude: 0 dBmOutput Imwdance: 50 ohmsConnector: Rear panel BNC

Marker Output (Linear sweep only):Levels: High to Low TTL compatible voltage transitionat selected marker frequency. sweep up only.Connector: Rear mm BNC

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Model 3325A General InformationTabla 1.2. Suoalemental Information Uhntdl.

X Dr ive Output Eweep up only) : Frequency Swi tching and Sett l ing Time: *Ampl i tude: 0 to + 10 V l inear ramp propor t ional tosweep frequency < 10 ms fo wi thin 1 Hz of f inal value for 100 kHz spanConnector : Rear panel BNC ~25 ms to wi thin 1 Hz of f inal value for 1 MHz span

Z Blank Output: < 70 ms to wi thin 1 Hz of f inal value for 20 MHz spanLevels ,TTL compatible vol tage levels~:

Linear Sweep: Phase Swi tching and Sett l ing Time:S ingle: L ow et s tart of weep. High at s top. Re- < 15 ms to wi thin 90 of phase lock for 20 MHz fre-mains High unt i l s tart of next sweep. qeCyChageContinuous: Low dur ing weep up. High dur ing Ampl i tude Swi tching Time:sLwep down. ~30 ms to wi thin ampl i tude speci f icat ions

Log S weep: Times shown are in addi t ion to programming t imeSingle: Low at s tart of sweep. High at s top. Re-mains High unt i l s tar t of next sweep. OEIERIL

Continuous: Low dur ing sweep. Goes Highmomentar i l y at s top frequency.

10 MHz Oven Reference Output. Option 001, for phaselock ing the 3325A to the opt ional high s tabi l ity frequencyreference:

Ampl i tude: 0 d9m. 50 ohms

Operat ing Envi ronment:Temperature: O to 55OCRelat ive Humidi ty : ~95%. On to 40CAl t i tude: 5 15,000 f t .s torage Tampetature: - 500 to + 75ocStorage Al t i tude: r50.000 f t .

Connector : Rear panel BNC. Must be connected tothe rear panel EXT RE F IN connector.

Power Requi rements:,00,,20,220,240+5%.- 1036.48 to 66 HzSO VA, 100 VA wi th al l opt ions. 10 VA standby

Dimensions in mi l l imeters and l inches) :REMOTE CONTROL 132.6 15%) high x 425.5 (16%I wide x 497.9

,I 9-5/S) deepHewlet+Packard Inter face Bus (HP-19, Control : (HP-19 isHewlett-Packard Companys implementat ion of IEEE Stan-dard 488- l 978) . Time shown is in addi t ion to programmingt ime.

Weight in k i lograms and I lbs):

Net weight: 9(201Shipping Weight: 14.5 I321

The following accessory options are also available for 1.19. ACCESSORIES AVAILABLE.the Model 3325A: . . ^option 907 Front Handle AssemblyOption 908 Rack Mount Flange KitOption 909 Rack Mount Flange Kit/FrontHandle AssemblyOption 910 Additional Operating and ServiceManual

1.17. ACCE SSOR IES SUPPLIED.I-18. A special connector is supplied with the HighStabi lity Frequency Reference Option 001 for connect-ing the rear panel Reference Output to the Reference In-put. This connector is Part No. 1250-1499.

l-20. The following accessor ies are available for usewith the Model 3325A:Number Description11048C 50 ohm Feedthru Termination11356A Ground Isolator03325-80001 Oven Board Assy. (Converts 3325A toOption 001)03325-80002 High Voltage Option (Converts 3325Ato Option 002)5061-0077 Rack Mount Flange Kit (Option 908)5061-0083 Rack Mount Flange/Front Handle Kit(Option 909)5061-0089 Front Handle Ki t (Option 907)

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