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Fluke 6060B User Manual

Fluke 6060B
312 pages
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pLUldE- (sO(fO^
NOTE
This manual documents the Model
G060B and Its assemblies at the revision
levels identified
In Section 7A.
If your instrument
contains assemblies with different revision letters,
it wilt be necessary for you to either
update or backdate this manual.
Refer to the supplemental change/errata
sheet
for newer assemblies, or
to the
backdating information in Section 7
A
for
older
assemblies.
6060B
SYNTHESIZED RF
SIGNAL GENERATOR
Instruction Manual
P/N
792697
February
1986
«1986.
John FluKe
Mfg. Ca, Inc. All Rights Reserved. Utho in U.S.A

Table of Contents

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Fluke 6060B Specifications

General IconGeneral
BrandFluke
Model6060B
CategoryInverter
LanguageEnglish

Summary

Section 1 Introduction and Specifications

1-1. Introduction

Describes the 6060B Synthesized Signal Generator and its applications in RF component and system testing.

1-2. Unpacking the Generator

Details the expected contents of the shipping container and procedures for inspecting for damage.

1-3. Safety

Provides information, warnings, and cautions for safe operation and equipment maintenance.

1-4. Operator Information Card

Describes the adhesive-backed card for bench or remote application reference.

1-5. Generator Description

Outlines the fundamental features of the Generator, including frequency, level, and modulation capabilities.

1-6. Controller Functions

Explains the microprocessor's role in controlling operator interface, background operations, and self-test capabilities.

1-7. Local Control

Details the three methods for controlling basic output parameters: direct numeric entry, bright digit increment/decrement, and step entry.

1-8. Display Field

Describes the programmed values of modulation, frequency, and amplitude displayed in three fields.

1-9. Remote-Control Programming

Covers remote control via IEEE-488 Interface, including listen-only and talk-only modes.

1-10. Frequency

Specifies the frequency range, resolution, and dependency of stability and accuracy on the reference.

1-11. Reference

Details the internal 10-MHz crystal oscillator and the use of external references.

1-12. Amplitude

Describes the signal level range, programming limits, and conversion between dBm and volts.

1-13. Modulation

Explains the internal and external AM and FM capabilities, including modulation oscillator selection.

1-14. Options and Accessories

Lists available options and included accessories for the Generator.

1-15. Recommended Test Equipment

Lists recommended test equipment for performance tests, calibration, and troubleshooting.

1-16. Mnemonics

References mnemonics used on schematics, block diagrams, and wiring diagrams.

1-17. Signal Generator Specifications

Provides guaranteed performance specifications over specified environmental conditions.

Static Sensitive Device Handling

Handling and Discharge Procedures

Covers minimizing handling, using original containers, static discharge, and body handling for sensitive devices.

Storage, Workstation, and Tool Guidelines

Details static shielding containers, surface handling, work area materials, and tool usage for static-free environments.

Section 2 Installation and Operation

2-1. Introduction

Describes how to install and operate the Generator, including initial inspection and setup.

2-2. Initial Inspection

Guides the user on inspecting the Generator upon arrival and handling any shipping damage.

2-3. Setting Up the Generator

Provides instructions on line power requirements, voltage selection, fuse replacement, and rack mounting.

2-4. Line Power Requirements

Specifies the required line voltage and fuse ratings for Generator operation.

2-5. Line Voltage and Fuse Selection

Instructs on verifying the line voltage setting and selecting the correct fuse before plugging in the power cord.

2-6. IEEE-488 Address

Details how to select the IEEE-488 address and modes (talk-only, listen-only) using rear panel switches.

2-7. Rack or Bench Mounting the Generator

Provides instructions and cautions for mounting the Generator in a rack or on a bench.

2-8. General Operating Information

Offers general information on Generator operation and differences between local and remote control.

2-9. Familiarization

Guides the user to identify front and rear panel controls, connectors, and switches.

2-10. Local Versus Remote Operation

Explains the two modes of Generator control: local via front panel keys and remote via IEEE-488.

2-11. Power-On Sequence

Describes the Generator's power-on sequence, including self-tests and status indicators.

2-12. Changing Output Parameters

Details three methods for changing output parameters: FUNCTION-DATA-UNIT, Bright-Digit Edit, and Step Entry.

2-13. Function Entry

Explains how to change instrument parameters using the FUNCTION-DATA-UNIT entry method.

2-14. Bright-Digit Edit Operation

Describes the fastest method for making incremental changes to parameters using EDIT keys.

2-15. Step Operation

Explains how to preset step increments for parameters and change them with a single keystroke.

2-16. Status and Clear Entries

Details how to interrogate the Generator for UNCAL or REJ ENTRY status.

2-17. RF Output On/Off

Explains how to enable or disable the RF output of the Generator.

2-18. Modulation On/Off and Rate

Describes how to select modulation modes and the internal modulation oscillator rate.

2-19. Memory

Explains how to save and recall up to 50 complete front panel settings.

2-20. Special Function

Details how to enable special operating functions like changing repeat rates or starting self tests.

2-21. Operating Reference Material

Describes local and remote operation for each Generator function, including syntax and data ranges.

2-22. Amplitude and Frequency Entry

Explains how to control carrier frequency and amplitude using the FUNCTION-DATA-UNIT entry sequence.

2-23. Amplitude Fixed Range

Describes how to use the Fixed-Range special function to fix the current amplitude range.

2-24. Amplitude Units Conversion

Explains how to convert displayed amplitude levels between dBm and volts.

2-25. Bright-Digit Edit Entry

Details how to use Bright-Digit Edit Entry to change instrument parameters like frequency and amplitude.

2-26. Memory Entry

Describes how to store and recall front panel settings, including sequence recall.

2-27. Modulation Entry

Explains how to preset modulation index, internal rate, and select modulation source.

2-28. Relative Function

Describes how to change frequency and amplitude using the Relative mode.

2-29. RF Output On/Off Entry

Explains how to enable the Generator output using the RF OUTPUT [ON/OFF] key.

2-30. Special Function Entry

Details how to use Special Function Entry to access special operating functions.

2-31. Status and Clear Entry

Explains how to interrogate the Generator for UNCAL or REJ ENTRY explanations.

2-32. Step Entry

Describes how to use the Step Entry function to change an instrument parameter.

2-33. Remote Operation (IEEE-488 Interface)

Covers operating the Generator using the IEEE-488 interface option.

2-34. Setting Up the IEEE-488 Interface

Provides a procedure to set up the Generator with the IEEE-488 Interface option.

2-35. Programming Commands

Details programming commands available from the front panel and via the IEEE-488 Interface.

Section 3 Theory of Operation

3-1. Introduction

Describes the theory of operation, covering general, functional, software, and detailed circuit descriptions.

3-2. General Description

Explains the Generator's three major sections: front, module, and rear.

3-3. Front Section

Describes the front section's controls, connectors, and indicators, handled by the Controller.

3-4. Module Section

Details the module section's shielded enclosure containing stimulus circuits and the Controller.

3-5. Rear Section

Covers the rear section, including power supply, cooling fan, external connectors, and options.

3-6. Functional Description

Describes the key output parameters: level, amplitude modulation, frequency, and frequency modulation.

3-7. Level

Explains level control via step attenuator and vernier DAC, including microprocessor control and calibration data.

3-8. Amplitude Modulation

Details how the Generator output signal is amplitude modulated using a control voltage and DAC.

3-9. Frequency

Explains the frequency coverage, bands, VCO, PLL, and N-divider for frequency synthesis.

3-10. Frequency Modulation

Describes how frequency modulation is achieved by applying signals to the PLL VCO and Phase Detector.

3-11. Software Operation

Details the Generator software execution on a TMS 9995 microprocessor and its general functions.

3-12. User Interface

Explains the Generator's software implementation with tasks for service, key input, and IEEE-488 interface.

3-13. Amplitude Control

Describes amplitude programming using a step attenuator and a 12-bit vernier level DAC.

3-14. Attenuators

Details the seven attenuation sections programmed in combination for coarse level control.

3-15. Level DAC

Explains how the level DAC setting is calculated and modified by calibration data.

3-16. Temperature Compensation

Describes the use of software temperature compensation data for improving level accuracy.

3-17. Reverse Power Protector

Explains the RPP's function in protecting the Generator from damaging voltages applied to the RF OUTPUT.

3-18. Frequency Reference Control

Details how frequency reference control bits are programmed based on switch settings and installed options.

3-19. Frequency Control

Describes the programmable output frequency, resolution, and band-determined synthesizer frequency.

3-20. Modulation On/Off

Explains the four modulation modes: Internal AM, External AM, Internal FM, and External FM.

3-21. Modulation Frequency

Details how the two internal modulation frequencies (400 Hz and 1000 Hz) are programmed.

3-22. Amplitude Modulation

Explains AM depth programming from 0 to 99% and conditions that trigger the UNCAL indicator.

3-23. Frequency Modulation

Describes frequency modulation programmability with three digits of resolution in three decade ranges.

3-24. FM Deviation

Explains the FM DAC's role in programming FM deviation and lists the settings.

3-25. Self Test

Describes the Generator's automatic self-testing of digital and analog circuits at power-on.

3-26. Service Special Functions

Details two special function self tests for front panel indicators and keys.

3-27. Status Signals

Explains five status signals indicating Generator option complement, interrogated at power-on self test.

3-28. Detailed Circuit Descriptions

Contains detailed circuit descriptions for various assemblies like Front, Module, and Rear sections.

3-29. Front Section, A1

Describes the front section components: Display PCA, Switch PCA, Elastomer switches, and POWER switch.

Front Section Circuitry

Details display PCA, data communications, filament voltage, bright-digit effect, display blanking, and modulation indicators.

3-38. Module Section, A2

Describes the module section's electrical assemblies, including Synthesizer, VCO, Output, Attenuator, Controller, and Memory.

3-39. Synthesizer PCA, A2A1

Explains the Synthesizer PCA's role in frequency control, modulation, and generating high and mid-band signals.

3-40. 10-MHz Reference

Details the Generator's internal 10-MHz crystal oscillator and the option for external reference locking.

3-41. Main Phase-Lock Loop

Describes the main phase-lock loop (PLL) as a fractional divider PLL with a single-sideband mixer.

3-42. Binary Divider And Single-Sideband Mixer

Explains the binary divider, quadrature signals, and mixers used to produce suppressed-carrier signals.

3-43. N-Divider

Details the main components of the N-Divider, including triple-modulus prescalers and gate arrays.

3-44. Phase Detector

Describes the digital phase-frequency detector and its role in maintaining constant VCO frequency.

3-45. Loop Amplifier

Explains the loop amplifier-integrator's function in filtering and buffering signals for PLL control.

3-46. FM Processing

Details how the FM signal is processed by KV DAC for VCO tuning compensation and phase modulation.

3-47. 800/40 MHz PLL

Describes the 800-MHz oscillator locking to the 10-MHz reference and providing signals for the sub-synthesizer.

3-48. 800-MHz VCO

Explains the 800-MHz VCO's role, circuit, and the PLL control voltage mechanism.

3-49. Sub-Synthesizer

Details the sub-synthesizer's components, including clock generator, gate array, and rate multiplier.

3-50. VCO PCA, A2A2

Describes the VCO PCA as the core of the main PLL, producing the Signal Generator's output.

3-51. Output PCA, A2A4

Explains the Output PCA's function in accepting RF signals, reducing distortion, and providing AM/FM signals.

3-52. RF Path

Details the RF path, including bandswitch selection, buffer amplifiers, and harmonic suppression filters.

3-53. Leveling Loop

Describes the leveling loop's function in accepting unleveled signals and generating leveled output.

3-54. Level Control

Explains how the instrument output level is set by the level-control circuit, including DACs and temperature compensation.

3-55. Modulation Oscillator

Describes the modulation oscillator generating leveled sine waves for AM and FM functions.

3-56. FM Deviation Control

Details the FM modulation signal source and deviation control circuits on the Output assembly.

3-57. Attenuator/RPP, A2A5

Describes the Attenuator/RPP assembly's coarse level control and attenuation range.

Controller PCA and Interfaces

Covers the Controller PCA, its microprocessor, attenuator control, front panel, and IEEE-488 interfaces.

3-62. IEEE-488 Interface

Explains the IEEE-488 interface, its tri-state buffer, and interrupt signal.

3-63. Memory

Describes the memory usage for storing program variables and calibration data.

3-64. Module I/O

Details control data transfer to RF circuitry via a unidirectional data bus and latches.

3-65. Reset

Explains the active-low reset signal generation for the microprocessor.

3-66. Status and Control

Describes how status signals are read by buffers and control/enable signals are latched.

3-67. Rear Section, A3

Covers the rear panel components: fuse/filter, transformer, power supply PCA, and fan.

3-68. Power Supply PCA, A3A1

Details the power supply PCA, including rectifier configurations and voltage regulators.

3-69. Sub-Harmonic Reference (Part of A2A1)

Explains the sub-harmonic reference circuit, including comparator, MOS switch, and phase detector.

3-70. Non Volatile Memory A2A8

Describes the non-volatile memory's power sources and buffering.

3-71. Power Circuit

Details the power sources for the non-volatile memory IC.

3-72. Memory Control

Explains how address, data, and control lines to the CMOS RAM are buffered.

Section 4 Maintenance

4-1. Introduction

Presents warranty information, service methods, performance tests, access, calibration, and troubleshooting.

Service Methods

Covers returning the instrument for service, self-service by module replacement, or component replacement.

4A-1. Introduction

Describes performance tests for key Generator parameters against specifications.

4A-2. Test Equipment

Lists recommended test equipment for performance tests, adjustment procedures, and troubleshooting.

Basic Instrument Tests

Covers Power-On and Synthesis tests to verify basic functional checks and frequency accuracy.

High-Level Accuracy Test

Verifies high-level output power accuracy and attenuator section correction factors.

Mid-Level Accuracy Test

Verifies level accuracy from -24 to -66 dBm at various frequencies.

Low-Level Accuracy Test

Verifies UUT level accuracy at -127 dBm using a spectrum analyzer.

Alternate Accuracy and Leakage Tests

Performs alternate level accuracy and output leakage tests using a measuring receiver.

Output Leakage and Harmonic Tests

Verifies output signal leakage and compares harmonic/spurious signals to the desired signal.

Modulation Tests Overview

Introduces tests for modulation accuracy, residual, and incidental modulation using a modulation analyzer.

Modulation Test Procedures

Details procedures for internal modulation oscillator frequency, AM accuracy, and AM accuracy/distortion tests.

Incidental FM, Residual AM, and FM Accuracy Tests

Covers tests for incidental FM, residual AM, and FM accuracy and distortion.

SWR Tests

Uses a VSWR bridge and spectrum analyzer to verify the UUT's SWR performance.

4B-1. Introduction

Describes general access procedures for major module assemblies.

4B-2. Location of Major Assemblies

Illustrates the location of major assemblies and provides information on exchanging modules.

4B-3. Access Instructions

Provides access instructions for each module before disassembly, including cover removal.

Module Removal Procedures

Details procedures for removing front section, rear section, synthesizer, output, attenuator, and VCO boards.

Section 4C Calibration Adjustments

Describes adjustment procedures for Power Supply, Display, Output, Synthesizer, and Attenuator/RPP assemblies.

Power Supply Adjustment

Covers the +37V adjustment (R3) on the Power Supply assembly, A3A1.

Output Assembly Adjustments

Details adjustments for the A2A4 Output PCA, including Level DAC offset.

Modulation Oscillator and Detector Adjustments

Covers adjustments for modulation oscillator level and detector offset voltage.

AM Depth and RF Level Adjustments

Details adjustments for AM depth potentiometer R421 and RF Level Adjustment R311.

HET Level Adjustment

Describes adjusting the HET Level Adjustment, R227, for equal output power.

Synthesizer Assembly Adjustments

Lists routine adjustments for the Synthesizer assembly, A2A1.

Synthesizer PCA Adjustments

Covers adjustments for notch filters, VCO upper clamp, 800-MHz oscillator, and lock-range centering.

Section 4D Troubleshooting and Repair

Provides information on identifying defective modules and troubleshooting to component level.

Troubleshooting Overview

Covers general troubleshooting steps including display check, key check, UNCAL conditions, and self-test descriptions.

Module Replacement Procedures

Details procedures for replacing modules like Power Supply, Synthesizer, Output, Attenuator, and VCO PCA.

PCA Replacement Procedures

Covers replacement procedures for VCO, Output, Controller, Display, Attenuator, IEEE-488, and Non-Volatile Memory PCAs.

Self-Test Data Fields

Explains the AAA and BBB fields of the self-test report, relating to AM/FM and synthesizer tests.

Digital Test Results

Details the CCC field results, which pertain to digital tests including IEEE-488 and memory checksums.

Output and Auxiliary Power Checks

Guides on checking the Generator output signal with a spectrum analyzer and verifying auxiliary power supply.

Power Supply Voltage Checks

Details how to check expected DC and ripple voltages at key test points of the Power Supply.

Digital and Control Troubleshooting

Suggests methods to isolate faults in digital or control circuits, referring to schematics and theory.

Microprocessor and Bus Troubleshooting

Covers troubleshooting microprocessor kernel, inputs, bus, and address decoder issues.

Synthesizer Troubleshooting

Provides guidance on troubleshooting synthesizer issues like inaccurate frequency or unlock conditions.

Sub-Synthesizer and FM Circuitry

Addresses troubleshooting for sub-synthesizer, 800/40 MHz loop, and FM circuitry issues.

Level Troubleshooting

Guides on troubleshooting inaccurate or unleveled Generator output, likely due to Output or Attenuator assembly faults.

Unleveled and AM Troubleshooting

Focuses on troubleshooting unleveled conditions and AM problems in the output assembly.

ALC, Detector, and RPP Control

Covers troubleshooting ALC loop control voltage, detector linearity, and RPP control circuits.

Section 5 List of Replaceable Parts

5-1. Introduction

Contains an illustrated parts breakdown of the instrument and options.

5-2. Parts List Information

Details information included in parts lists: reference designation, description, stock number, and quantity.

5-3. How to Obtain Parts

Provides instructions on ordering components directly or via FLUKE stock numbers, including required information.

5-4. Recommended Spare Parts Kit

Lists items in a recommended spare parts kit for the basic instrument.

Section 6 Options

6-1. Introduction

Covers theory of operation, circuit description, and maintenance for each option.

Option -130 High-Stability Reference

Details the High-Stability Reference option, its operation, circuit description, and adjustments.

Option -132 Medium-Stability Reference

Describes the Medium-Stability Reference option, its operation, circuit description, and adjustments.

Option -488 IEEE-488 Interface

Provides an overview of the IEEE-488 Interface option, including its circuit, maintenance, and parts.

Option -651 Low-Rate Fm

Details the Low-Rate FM option, its operation, circuit description, performance test, and adjustment.

Option -830 Rear Panel RF Output and Mod Input

Describes the Rear Panel RF Output and Mod Input option, its operation, circuit description, and maintenance.

Section 7 General Information

7-1. Introduction

Contains generalized user information and supplemental information to the List of Replaceable Parts.

Section 8 Schematic Diagrams

Schematic Diagrams Index

Lists all schematic diagrams and their corresponding page numbers, including block diagrams and PCA layouts.

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