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Fluke 5700A Series II Service Manual

Multi-function calibrator
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5700A/5720A Series II
Multi-Function Calibrator

Service Manual

November 2007
©2007 Fluke Corporation, All rights reserved.
All product names are trademarks of their respective companies.

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Summary of Contents for Fluke 5700A Series II

  • Page 1: Service Manual

    ® 5700A/5720A Series II Multi-Function Calibrator Service Manual November 2007 ©2007 Fluke Corporation, All rights reserved. All product names are trademarks of their respective companies.
  • Page 2 Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period.

  • Page 3: Table Of Contents

    Table of Contents Chapter Title Page Introduction and Specifications............1-1 1-1. Introduction................... 1-3 1-2. Contacting Fluke................... 1-4 1-3. About this Manual ................1-4 1-4. How to Use this Manual ............... 1-4 1-5. Wideband AC Voltage Module (Option 5700A-03) ......1-5 1-6.
  • Page 4 Introduction................... 2-2 2-2. Calibrator Overview ................2-2 2-3. Internal References................2-2 2-4. Hybrid Reference Amplifiers ............2-2 2-5. Fluke Thermal Sensor (FTS)............2-2 2-6. Digital-to-Analog Converter (DAC)..........2-3 2-7. Digital Section Overview..............2-3 2-8. Analog Section Overview..............2-3 2-9.
  • Page 5 (continued) Contents 3-33. AC Voltage Distortion Test.............. 3-43 3-34. Wideband Distortion Testing ............3-43 3-35. AC Voltage Overshoot Test ............. 3-44 3-36. Minimum Use Requirements ..............3-44 3-37. Determining Test Limits for Other Calibration Intervals ..... 3-46 Maintenance..................4-1 4-1. Introduction...................
  • Page 6 5700A/5720A Series II Service Manual...
  • Page 7 List of Tables Table Title Page 1-1. Auxiliary Amplifier Data ..................1-6 3-1. Standards for Calibrating 5700A/5720A Series II ..........3-5 3-2. List of Required Equipment for Main Output ............3-22 3-3. Equipment Required for Resistance Testing ............3-23 3-4. Low Value Resistance Calibration Using a Current Source ........
  • Page 8 5700A/5720A Series II Service Manual 3-31. Wideband Accuracy at 1 kHz Test Record ............3-64 3-32. Wideband Flatness Test Record ................3-64 3-33. Wideband Absolute Error 10 Hz to 500 kHz ............3-66 3-34. Load Regulation Test Record................. 3-67 3-35. DC Voltage Linearity Test Record................ 3-67 3-36.
  • Page 9 List of Figures Figure Title Page 1-1. Time and Costs: Calibrator Calibration..............1-10 2-1. Digital Section Block Diagram ................2-4 2-2. Analog Section Block Diagram, Part ..............2-7 2-3. Analog Section Block Diagram, Part ..............2-8 3-1. 732B External Calibration Connections..............3-7 3-2.
  • Page 10 5700A/5720A Series II Service Manual viii...
  • Page 11 20402. Stock No. 004-000-00345-4. Declaration of the Manufacturer or Importer We hereby certify that the Fluke Model 5700A/5720A Series II Calibrator is in compliance with BMPT Vfg 243/1991 and is RFI suppressed. The normal operation of some equipment (e.g. signal generators) may be subject to specific restrictions. Please observe the notices in the users manual.
  • Page 13 OPERATOR SAFETY SUMMARY WARNING HIGH VOLTAGE is used in the operation of this equipment LETHAL VOLTAGE may be present on the terminals, observe all safety precautions! To avoid electrical shock hazard, the operator should not electrically contact the output hi or sense hi binding posts. During operation, lethal voltages of up to 1100V ac or dc may be present on these terminals.

  • Page 14: Power Source

    Symbols Marked on Equipment DANGER — High Voltage Protective ground (earth) terminal Attention — refer to the manual. This symbol indicates that information about the usage of a feature is contained in the manua Power Source The 5700A/5720A Series II is intended to operate from a power source that will not apply more than 264V ac rms between the supply conductors or between either supply conductor and ground.
  • Page 15 SERVICING SAFETY SUMMARY FOR QUALIFIED SERVICE PERSONNEL ONLY Also refer to the preceding Operator Safety Summary Do Not Service Alone Do not perform internal service or adjustment of this product unless another person capable of rendering first aid and resuscitation is present. Use Care When Servicing With Power On Dangerous voltage exist at many points inside this product.
  • Page 16 FIRST AID FOR ELECTRIC SHOCK Free the Victim From the Live Conductor Shut off high voltage at once and ground the circuit. If high voltage cannot be turned off quickly, ground the circuit. If the circuit cannot be broken or grounded, use a board, dry clothing, or other nonconductor to free the victim.

  • Page 17: Introduction And Specifications

    Chapter 1 Introduction and Specifications Title Page 1-1. Introduction................... 1-3 1-2. Contacting Fluke................... 1-4 1-3. About this Manual ................1-4 1-4. How to Use this Manual ............... 1-4 1-5. Wideband AC Voltage Module (Option 5700A-03) ......1-5 1-6. Auxiliary Amplifiers................1-6 1-7.
  • Page 18 5700A/5720A Series II Calibrator Service Manual...

  • Page 19: Introduction

    Standard IEEE-488 (GPIB) interface, complying with ANSI/IEEE Standards 488.1- 1987 and 488.2-1987. Selectable normal remote mode or emulation of the Fluke 5100B and 5200A Series calibrators in functions and response to system controller software EIA Standard RS-232C serial data interface for printing, displaying, or transferring internally-stored calibration constants, and for remote control of the calibrator.

  • Page 20: Contacting Fluke

    1-2. Contacting Fluke To order accessories, receive operating assistance, or get the location of the nearest Fluke distributor or Service Center, call: USA: 1-888-44-FLUKE (1-888-443-5853)

  • Page 21: Wideband Ac Voltage Module (Option 5700A-03)

    Introduction and Specifications Wideband AC Voltage Module (Option 5700A-03) Remote operation (IEEE-488 or serial): Chapter 5 Options and accessories: Chapters 2 and 8 Instrument specifications: The end of this Chapter Theory of operation: Chapter 2 of the 5700A/5720A Series II Service Manual 1-5.

  • Page 22: Auxiliary Amplifiers

    5700A/5720A Series II Calibrator Service Manual 1-6. Auxiliary Amplifiers The Fluke Model 5725A Amplifier is available to extend the high voltage performance and current range of the calibrator: Interface connectors on the calibrator’s rear panel accept cables to directly operate a 5725A.

  • Page 23: Direct Voltage Reference Standard

    It maintains full specified stability over a temperature span of 18 to 28 °C. The calibrator uses a 10V reference standard such as the Fluke 732B in its semi- automated calibration procedure to establish external voltage traceability. Chapter 7 describes this procedure.

  • Page 24: Service Centers

    In the calibrator, one Fluke rms sensor serves as an ac/dc transfer standard to develop gain and flatness correction constants during calibration. The second Fluke rms sensor continuously monitors and corrects output voltage during operation.
  • Page 25 Also, you must assume that drift is predictable enough so that performance is within limits between recalls. The 5700A/5720A Series II Calibrator makes use of Fluke design breakthroughs in the use of internal check standards and measurement systems. As a result, it can be completely calibrated in place to full specifications using a small number of convenient, portable, environmentally tolerant standards available from Fluke.

  • Page 26: The Calibration Process

    Infrequent verification is done in the traditional way, by comparing selected ac voltage outputs with an external dc voltage standard through an external ac/dc transfer standard. Fluke recommends this be done every two years, or as determined by the policy of your organization.

  • Page 27: Developing A Performance History

    1-20. Developing a Performance History A Fluke specification is a set of performance limits that all products must meet. To maintain consistent quality, Fluke calibrators are specified with enough margin to include temperature, line, and load extremes, plus additional margin for production. This means that a typical 5700A/5720A Series II calibrator in a typical environment operates inside 50% of specification limits.

  • Page 28: Specification Confidence Levels

    5700A/5720A Series II Calibrator Service Manual Specifications are valid after a warm-up period of twice the time the calibrator has been turned off, up to a maximum of 30 minutes. For example, if the calibrator has been turned off for five minutes, the warm-up period is ten minutes. 1-24.

  • Page 29: General Specifications

    Introduction and Specifications General Specifications 1-27. General Specifications Standard Interfaces ..........IEEE-488, RS-232, 5725A, 5205A or 5215A, 5220A, phase lock in (BNC), phase reference out (BNC). Temperature Performance Operating ............0 °C to 50 °C Calibration............15 °C to 35 °C Storage ...............

  • Page 30: Electrical Specifications

    5700A/5720A Series II Calibrator Service Manual 1-28. Electrical Specifications Note Fluke guarantees performance verification using specifications stated to 99% confidence level. 1-29. DC Voltage Specifications 5720A Series II DC Voltage Specifications Relative Uncertainty Absolute Uncertainty 1 °C 5 °C from calibration temperature...
  • Page 31 Introduction and Specifications Electrical Specifications 5700A Series II DC Voltage Specifications Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (ppm output + V) 99 % Confidence Level 220 mV 10 nV...
  • Page 32 5700A/5720A Series II Calibrator Service Manual DC Voltage Secondary Performance Specifications and Operating Characteristics Temperature Coefficient Noise Adder Stability Linearity ± 1 °C 0 - 10 °C Bandwidth Bandwidth ± 1 °C Range 24 Hours 0.1-10 Hz 10 Hz-10 kHz 10 - 40 °C 40 - 50 °C pk-pk...

  • Page 33: Ac Voltage Specifications

    Introduction and Specifications Electrical Specifications 1-30. AC Voltage Specifications 5720A Series II AC Voltage Specifications: 99% Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (Hz)
  • Page 34 5700A/5720A Series II Calibrator Service Manual 50 - 1 k 70 + 4 75 + 4 80 + 4 85 + 4 50 + 4 55 + 4 5725A Amplifier: 1100 V 1 mV 40 - 1 k 75 + 4 80 + 4 85 + 4 90 + 4...
  • Page 35 Introduction and Specifications Electrical Specifications 5720A Series II AC Voltage Specifications: 95 % Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution (Hz) 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (ppm output + V) 2.2 mV...
  • Page 36 5700A/5720A Series II Calibrator Service Manual 5725A Amplifier: 1100 V 1 mV 40 - 1 k 75 + 4 80 + 4 85 + 4 90 + 4 50 + 4 55 + 4 1 k - 20 k 105 + 6 125 + 6 135 + 6 165 + 6...
  • Page 37 Introduction and Specifications Electrical Specifications 5700A Series II AC Voltage Specifications: 99 % Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (Hz) (ppm output + V) 2.2 mV...
  • Page 38 5700A/5720A Series II Calibrator Service Manual 5725A Amplifier: 1100 V 1 mV 40 - 1 k 75 + 4 80 + 4 85 + 4 90 + 4 50 + 4 55 + 4 1 k - 20 k 105 + 6 125 + 6 135 + 6 165 + 6...
  • Page 39 Introduction and Specifications Electrical Specifications 5700A Series II AC Voltage Specifications: 95 % Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (Hz) (ppm output + V) 2.2 mV...
  • Page 40 5700A/5720A Series II Calibrator Service Manual 5725A Amplifier: 1100 V 1 mV 40 - 1 k 75 + 4 80 + 4 85 + 4 90 + 4 50 + 4 55 + 4 1 k - 20 k 105 + 6 125 + 6 135 + 6 165 + 6...
  • Page 41 Introduction and Specifications Electrical Specifications AC Voltage Secondary Performance Specifications and Operating Characteristics Temperature Coefficient Maximum Stability Distortion 0 - 10 °C 1 °C Output Impedance Frequency Bandwidth Range 10 - 40 °C 24 Hours (Hz) 10 Hz-10 MHz 40 - 50 °C V / °C (% output + V) 2.2 mV...
  • Page 42 5700A/5720A Series II Calibrator Service Manual 5725A Amplifier: Temperature Coefficient Distortion Stability Adder Bandwidth Load Regulation Range Frequency 1 °C 10 Hz -10 MHz 0 - 10 °C and (Hz) 10 - 40 °C 24 Hours 40 - 50 °C (% output) (ppm output + mV) (ppm output) / °C...
  • Page 43 Introduction and Specifications Electrical Specifications Overshoot .............. <10 % Common Mode Rejection ........140 dB, DC to 400 Hz Frequency Ranges (Hz)............10.000 - 119.99 0.1200 k - 1.1999 k 1.200 k - 11.999 k 12.00 k - 119.99 k 120.0 k - 1.1999 M Uncertainty............

  • Page 44: Resistance Specifications

    5700A/5720A Series II Calibrator Service Manual 1-31. Resistance Specifications 5720A Series II Resistance Specifications Absolute Uncertainty of Characterized Value Relative Uncertainty 5 °C from calibration temperature 1 °C Nominal Value 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days 99 % Confidence Level 11.5...

  • Page 45: Resistance Specifications

    Introduction and Specifications Electrical Specifications 5700A Series II Resistance Specifications Absolute Uncertainty of Characterized Value Relative Uncertainty 5 °C from calibration temperature 1 °C Nominal Value 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days 99 % Confidence Level 1.9 k 10 k 19 k...
  • Page 46 5700A/5720A Series II Calibrator Service Manual Resistance Secondary Performance Specifications and Operating Characteristics Maximum Two-Wire Adder Temperature Coefficient Difference Active Maximum Adder Stability Full Spec Load Compensation Peak Nominal Characterized 1 °C Range Current Value to Nominal 0 - 10 °C 24 Hours Lead Resistance Value...
  • Page 47 Introduction and Specifications Electrical Specifications Current Derating Factors Value of Derating Factor K for Over or Under Current Nominal Value Two-Wire Comp Four-Wire Four-Wire I < I I < I < I < I SHORT 4 x10 1.5 x 10 1.6 x 10 3 x 10 1 x 10...

  • Page 48: Dc Current Specifications

    5700A/5720A Series II Calibrator Service Manual 1-32. DC Current Specifications 5720A Series II DC Current Specifications Absolute Uncertainty Relative Uncertainty 1 °C 5 °C from calibration temperature Resolution Range 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (ppm output + nA) 99 % Confidence Level 40 + 7...

  • Page 49: Dc Current Specifications

    Introduction and Specifications Electrical Specifications 5700A Series II DC Current Specifications Absolute Uncertainty Relative Uncertainty 1 °C 5 °C from calibration temperature Resolution Range 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (ppm output + nA) 99 % Confidence Level 45 + 10 50 + 10...
  • Page 50 5700A/5720A Series II Calibrator Service Manual DC Current Secondary Performance Specifications and Operating Characteristics Temperature Noise Coefficient Stability Bandwidth Bandwidth Burden Maximum 1 °C 0 - 10 °C 0.1-10 Hz Voltage Load for Full Compliance 10 Hz-10 24 Hours Range 10 - 40 °C Adder Accuracy...

  • Page 51: Ac Current Specifications

    Introduction and Specifications Electrical Specifications 1-33. AC Current Specifications 5720A Series II AC Current Specifications: 99 % Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (Hz)

  • Page 52: Ac Current Specifications

    5700A/5720A Series II Calibrator Service Manual 5720A Series II AC Current Specifications: 95% Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (Hz) (ppm output + nA) 10 - 20...
  • Page 53 Introduction and Specifications Electrical Specifications 5700A Series II AC Current Specifications: 99 % Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency( Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (ppm output + nA) 10 - 20 650 + 30...
  • Page 54 5700A/5720A Series II Calibrator Service Manual 5700A Series II AC Current Specifications: 95 % Confidence Level Absolute Uncertainty Relative Uncertainty 5 °C from calibration temperature 1 °C Frequency Range Resolution 24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days (Hz) (ppm output + nA)
  • Page 55 Introduction and Specifications Electrical Specifications AC Current Secondary Performance Specifications and Operating Characteristics Temperature Maximum Noise and Resistive Distortion Coefficient Stability 1 °C Compliance Load (Bandwidth Frequency 24 Hours Limits Range 0 - 10 °C and For Full 10 Hz - 50 kHz (Hz) 10 - 40 °C (V rms)

  • Page 56: Wideband Ac Voltage (Option 5700-03) Specifications

    5700A/5720A Series II Calibrator Service Manual 1-34. Wideband AC Voltage (Option 5700-03) Specifications Specifications apply to the end of the cable and 50 termination used for calibration. Absolute Uncertainty Range 5 °C from calibration temperature 30 Hz - 500 kHz Resolution 24 Hours 90 Days...

  • Page 57: Auxiliary Amplifier Specifications

    Introduction and Specifications Electrical Specifications 1-35. Auxiliary Amplifier Specifications For complete specifications, see the 5205A and 5220A Operators Manuals. 5205A (220V - 1100 V ac, 0 V - 1100 V dc) Overshoot: < 10 % Distortion (bandwidth 10 Hz - 1 MHz): 10 Hz - 20 kHz ..........
  • Page 58 5700A/5720A Series II Calibrator Service Manual 1-42...

  • Page 59: Theory Of Operation

    Introduction................... 2-3 2-2. Calibrator Overview ................2-3 2-3. Internal References................2-3 2-4. Hybrid Reference Amplifiers ............2-3 2-5. Fluke Thermal Sensor (FTS)............2-3 2-6. Digital-to-Analog Converter (DAC)..........2-4 2-7. Digital Section Overview..............2-4 2-8. Analog Section Overview..............2-4 2-9.
  • Page 60 5700A/5720A Series II Calibrator Service Manual...

  • Page 61: Introduction

    "Internal References.") 2-3. Internal References The major references that form the basis of the Calibrator's accuracy are the hybrid reference amplifiers, patented Fluke solid-state thermal rms sensors, an extremely linear dac, and two internal precision resistors. 2-4. Hybrid Reference Amplifiers A precision source can only be as accurate as its internal references, so the dc voltage reference for the Calibrator was chosen with extreme care.

  • Page 62: Digital-To-Analog Converter (Dac)

    5700A/5720A Series II Calibrator Service Manual 2-6. Digital-to-Analog Converter (DAC). A patented 26-bit dac is used in the calibrator as a programmable voltage divider. The dac is a pulse-width modulated (pwm) type with linearity better than 1 ppm (part-per- million) from 1/10th scale to full scale. 2-7.
  • Page 63 Theory of Operation Analog Section Overview ahp003f.eps Figure 2-1. Digital Section Block Diagram...

  • Page 64: Functional Description Presented By Output Function

    5700A/5720A Series II Calibrator Service Manual These analog assemblies are interfaced to the Analog Motherboard assembly (A3). The guarded digital bus generated by the guard crossing portion of the Regulator/Guard Crossing assembly controls all analog assemblies except the Filter/PA Supply. The Guard Crossing interfaces with the unguarded CPU assembly via a fiber-optic link.

  • Page 65: Dc Voltage Functional Description

    Theory of Operation Functional Description Presented by Output Function 2-10. DC Voltage Functional Description The DAC assembly (A11) provides a stable dc voltage and is the basic building block of the Calibrator. DC voltages are generated in six ranges: 220 mV 2.2V 220V 1100V...
  • Page 66 5700A/5720A Series II Calibrator Service Manual Figure 2-2. Analog Section Block Diagram, Part 1 (File ahp33f.eps is located in pagemaker and will be inserted when book is pdf'ed)
  • Page 67 Theory of Operation Functional Description Presented by Output Function Figure 2-3. Analog Section Block Diagram, Part 2 (File is ahp34f.eps located in pagemaker and will be inserted when book is pdf'ed)

  • Page 68: Ac Voltage Functional Description

    5700A/5720A Series II Calibrator Service Manual The 1100V range is generated by the High Voltage/High Current assembly (A15) operating in conjunction with the Power Amplifier assembly and the High Voltage Control assembly. The 11V range of the DAC assembly is routed to the High Voltage/High Current assembly which amplifies by a gain of -100 to create the 1100V range.

  • Page 69: Wideband Ac V Functional Description (Option -03)

    Theory of Operation Functional Description Presented by Output Function 2-12. Wideband AC V Functional Description (Option -03) The Wideband AC Voltage module (Option -03) consists of the Wideband Oscillator assembly (A6) and the Wideband Output assembly (A5). There are two wideband frequency ranges: 10 Hz to 1.1 MHz 1.2 MHz to 30 MHz...

  • Page 70: Ohms Functional Description

    5700A/5720A Series II Calibrator Service Manual 2-15. Ohms Functional Description Two assemblies function as one to supply the fixed values of resistance: Ohms Main assembly (A10) Ohms Cal assembly (A9) All of the resistance values except the 1 , 1.9 , and short are physically located on the Ohms Main assembly.

  • Page 71: Calibration And Verification

    Chapter 3 Calibration and Verification Title Page 3-1. Introduction................... 3-3 3-2. Calibration .................... 3-4 3-3. Calibrating the 5700A/5720A Series II to External Standards ..... 3-4 3-4. Calibration Requirements ..............3-4 3-5. When to Adjust the Calibrator’s Uncertainty Specifications ... 3-5 3-6.
  • Page 72 5700A/5720A Series II Calibrator Service Manual 3-36. Minimum Use Requirements ..............3-44 3-37. Determining Test Limits for Other Calibration Intervals ..... 3-46...

  • Page 73: Introduction

    Calibration and Verification Introduction 3-1. Introduction This chapter gives procedures for 5700A/5720A Series II calibration, verification, acceptance testing, and performance testing. Information here applies to testing the performance of and calibrating a normally operating 5700A/5720A Series II. In case of malfunction, refer to Chapter 5, Troubleshooting, which explains how to use self diagnostic tests to identify a faulty module.

  • Page 74: Calibration

    5700A/5720A Series II Calibrator Service Manual 3-2. Calibration This chapter provides procedures for calibrating the 5700A/5720A Series II to external standards, adjusting the range if necessary, and for performing a calibration check. Your calibrator is calibrated at the factory with constants that are traceable to NIST. In order to maintain traceability, you only need to met the following requirements.

  • Page 75: When To Adjust The Calibrator's Uncertainty Specifications

    ±2.5 ppm, then the 5700A and the 5720A absolute uncertainty specifications listed in Table 3-1 for the traceable quantity of voltage must all be increased by ±1 ppm. Table 3-1. Standards for Calibrating 5700A/5720A Series II Fluke Traceable Nominal Uncertainty...

  • Page 76: Calibration Procedure

    5700A/5720A Series II Calibrator Service Manual 3-6. Calibration Procedure Before you being this procedure make sure the calibrator is powered on and has completed the appropriate warm-up period. After you have finished calibration, but before you save the new constants, the calibrator presents the new changes as ±...
  • Page 77 Calibration and Verification Calibrating the 5700A/5720A Series II to External Standards 4. Enter the ambient temperature; then press E. The display shows: PREV MENU IF3-4.EPS 5. Connect the 732B to the calibrator as shown in Figure 3-1. VOLTAGE REFERENCE STANDARD 732B DC STANDARD CALIBRATOR AC PWR...
  • Page 78 5700A/5720A Series II Calibrator Service Manual 6. Enter the true value of the 732B 10V output. The true value is the value printed on the calibration sticker, plus or minus, as well as drift that has occurred since calibration. That drift can be estimated provided control charts have been maintained for the 732B.
  • Page 79 Calibration and Verification Calibrating the 5700A/5720A Series II to External Standards 8. Reverse the HI and LO connections at the 732B terminals, and press E. The following displays appear, asking you to wait before proceeding with the 10 k standard. PREV MENU IF3-8.EPS...
  • Page 80 5700A/5720A Series II Calibrator Service Manual CALIBRATOR RESISTANCE STANDARD OUTPUT SENSE CURRENT SENSE WIDEBAND CHASSIS GUARD GROUND GROUND CURRENT F7-4.EPS Figure 3-2. 742A-1 and 742A-10k External Calibration Connections 10. To reject the changes, return to the calibration menu shown in step 2 by pressing P.
  • Page 81 Calibration and Verification Calibrating the 5700A/5720A Series II to External Standards 11. Disconnect the 10 k standard, and connect the calibrator to the 1 standard; then enter the true value of the 1 standard. If the standard is not between 0.9 and 1.1 , an error message appears, which lets you start over from this point with another standard.

  • Page 82: Range Calibration

    5700A/5720A Series II Calibrator Service Manual 3-7. Range Calibration Once calibration is complete, you may find you need to make further adjustments to the range. Calibrating the range is accomplished by adjusting a range constant, which is an additional gain multiplier. Although range calibration is not needed in order to meet total uncertainty specifications, it is useful for tuning the calibrator so that its values are closer to your own standards.
  • Page 83 Calibration and Verification Range Calibration PREV MENU IF3-2.EPS 3. Press the “Range Adjust” softkey to bring up the next menu shown below: PREV MENU IF3-18.EPS 4. Press the “DC V” softkey to bring up the next menu shown below: PREV MENU IF3-19.EPS 5.
  • Page 84 5700A/5720A Series II Calibrator Service Manual PREV MENU IF057.EPS 8. Press O to activate the calibrator output. Then turn the output adjustment knob on the calibrator until you achieve a null on the null detector. 9. Se the rear panel CALIBRATION switch to ENABLE. Press E on the front panel.

  • Page 85: Calibrating The Wideband Ac Module (Option 5700A-03)

    Calibration and Verification Calibrating the Wideband AC Module (Option 5700A-03) NULL DETECTOR GUARD : OFF : OFF EX SNS EX GRD CALIBRATOR OUTPUT SENSE WIDEBAND GUARD GROUND CURRENT 752A VOLTAGE DIVIDER STANDARD INPUT NULL DETECTOR OUTPUT REFERENCE STANDARD 732B VOLTAGE REFERENCE STANDARD 732B DC STANDARD AC PWR...
  • Page 86 5700A/5720A Series II Calibrator Service Manual Since frequency flatness is determined by stable parameters (i.e. circuit geometry and dielectric constants), the flatness of the Wideband AC Module has excellent long-term stability. Consequently, a two-year calibration cycle is adequate for flatness calibration, and can be scheduled to coincide with the calibrator’s shipment to a standards laboratory for periodic verification.
  • Page 87 Calibration and Verification Calibrating the Wideband AC Module (Option 5700A-03) CALIBRATOR OUTPUT SENSE FEEDTHROUGH WIDEBAND GUARD GROUND CURRENT GND TAB F7-5.EPS Figure 3-4. Wideband Module Calibration Connection 4. Press the “Gain” softkey to bring up the following display: PREV MENU IF3-3.EPS 5.

  • Page 88: Performing A Calibration Check

    5700A/5720A Series II Calibrator Service Manual 6. Reverse the dual-banana connector so that the center connector is connected to LO; then press E. The display shows the following: PREV MENU IF3-16.EPS After a short time, a message appears indicating that the wideband calibration is complete.
  • Page 89 Calibration and Verification Performing a Calibration Check PREV MENU IF3-3.EPS 3. Enter the ambient temperature; then press E. As the calibration check proceeds, the display indicates the current process of the calibration check. When the check is complete, the largest shift that is detected appears on the display. PREV MENU IF3-17.EPS...

  • Page 90: Full Verification

    5700A/5720A Series II Calibrator Service Manual 3-10. Full Verification An independent external verification is recommended every two years, following normal periodic calibration or repair of the calibrator. Verification establishes and maintains parallel external traceability paths for the internal functions that are not adjusted or corrected during calibration.

  • Page 91: Required Equipment For All Tests

    70%, allow a minimum of two hours warm-up. Extended storage at high temperatures and humidity may require up to four days of power-on stabilization. 2. If you are doing a regularly scheduled full verification as recommended by Fluke, calibrate the 5700A/5720A Series II as previously described before continuing with verification.
  • Page 92 Fluke 5790A ACV, ACI Resistance Standards Fluke 742A Series Cal, Ohms, DCI Reference Divider Fluke 752A DC V Null Detector EM Electronics N11 (Fluke 845A) DC V Shunt Adapter Fluke 792A-7004 AC I Calibrator Fluke 55X0A Ohms Frequency Counter Philips PM6669...

  • Page 93: Resistance Verification Test

    Table 3-3. Equipment Required for Resistance Testing Equipment Decsription Resistance Standards Fluke 742A Series in the following values: 1 , 1.9 , 10 , 10 k , 19 k , 10 M , and 19 M Current Source Fluke 5500A or 5520A Wavetek 1281 or HP 3458A 1.
  • Page 94 5700A/5720A Series II Calibrator Service Manual INPUT SENSE 742A-X CURRENT SOURCE CALIBRATOR OUTPUT CURRENT SENSE OUTPUT SENSE (UUT) F3-5.EPS Figure 3-6. 1 Ohm and 10 Ohm Resistor Verification Note There is no need to do the cal current calculation of step 6 if the current source has a settability of ±3 ppm.

  • Page 95: Two-Wire Compensation Verification

    Calibration and Verification Full Verification Table 3-4. Low Value Resistance Calibration Using a Current Source 5720A (UUT) Apply Current 5720A Deviation From 5720A Displayed Value Resistance Displayed Value (90-day) 100 mA 95 ppm 0.9995 to 1.0005 100 mA 95 ppm 1.89905 to 1.90095 10 mA 25.0 ppm...

  • Page 96: Dc Voltage Verification Test

    Equipment Model DC Reference Standard Fluke 732B Reference Divider Fluke 752A Null Detector EM Electronics 11 (Fluke 845A) Low Thermal Cables 5440A-7002 5440A-7003 Note The 5440A-7002 or 5440A-7003 is for the 5700A; the 5720A uses only the 5440A-7003. Proceed as follows to perform the dc voltage verification test: 1.

  • Page 97: Dc Voltage One-Tenth Scale Linearity Test

    Calibration and Verification Full Verification 3-16. DC Voltage One-Tenth Scale Linearity Test Note If the result of the previous test at 1V on the 11V range was less than 2.5 V it is not necessary to perform this test. This test uses the same equipment as the previous test. Proceed as follows to perform the DC Voltage One-Tenth Scale Linearity Test: 1.

  • Page 98: Direct Current Accuracy Verification Test

    L&N 4221B (0.1 at 2A) Fluke 742A-1 (1 at 200 mA) Fluke 742A-10 (10 at 20 mA) Fluke 742A-1k (1 k at 2 mA) Fluke 742A-10k (10 k at 200 A) Use Table 3-20 (5720A) and Table 3-21 (5700A) for the test records.

  • Page 99: Ac Voltage Frequency Accuracy Test

    5. Algebraically add column B to column A. Enter the result on the test record. Verify that it is within the test limits shown. 6. Repeat steps 2 through 5 using the Fluke 742A Resistance Standards and Calibrator output currents shown in Tables 3-25 or 3-26.
  • Page 100 5700A/5720A Series II Calibrator Service Manual Use Table 3-23 (5720A) or Table 3-24 (5700A) for the test records. 1. Place the 5790A on top of the Calibrator and connect the equipment as shown in Figure 3-9. Note The point of measurement is at the end of the cable and adapter that connects to the 5790A.

  • Page 101: Ac Current Test 22 Ma To 11A Ranges

    Model or Description AC Measurement standard Fluke 5790A Current Shunts Fluke A40 Series: 20 mA, 200 mA, 2A, and A40A Series: 10A (if verifying a 5725A) , with AC-DC difference corrections. Current Shunt Adapter Fluke 792A-7004 A40 current shunt adapter Cable Pomona 1368-A-18.
  • Page 102 5700A/5720A Series II Calibrator Service Manual 1. Connect the equipment as shown in Figure 3-10(A) use the 2A shunt. 2. Enter the ac to dc difference corrections for each shunt at each frequency in the appropriate column of the test record (Table 3-26 or 3-27). 3.
  • Page 103 A. Alternating Current Test Setup, 22 mA to 2A Using 5790A Input 1 Calibrator (UUT) A40A 10A Pomona Cable Current Shunt 5268-C-12 5790A 5725A (UUT) Input 1 Black 792A-7004 FLUKE A45-4003 A40 Current P/N 212852 Shunt Adapter Cable UHF(M) to BNC(F) Pomona Model 1707 Adapter UHF(F) to Banana Kings KC-99-34 Adapter B.

  • Page 104: Ac Current Test, 2 Ma And 200 A Ranges

    Ranges Equipment Model or Description AC Measurement Standard Fluke 5790A Metal Film Resistor 200 , 1/8w, 1%, T9 (P/N 309724) mounted on a dual banana plug. Metal Film Resistor 2 k , 1/8w, 1%, T9 (PN 335422) mounted on a dual banana plug Cable Pomona 1368-A-18.

  • Page 105: Rationale For Using Metal-Film Resistors To Measure Ac Current

    Calibration and Verification Full Verification 9. Change the Calibrator frequency to 20 Hz, 40 Hz, 1 kHz, 5 kHz and 10 kHz. At each frequency record the error display on the 5790A in Table 3-28 or 3-29. Verify that the results are within limits shown. 10.

  • Page 106: Wideband Frequency Accuracy Test

    5700A/5720A Series II Calibrator Service Manual Note The input impedance at INPUT 2 of the 5790A on the millivolt ranges is 10 M shunted by 83 pF and the cable used to connect the shunt resistor to the 5790A has 40 pF capacitance, for a total of 123 pF. The reactance of 123 pF at 10 kHz is 129 k , and using formula (1), in the case where R=2 k , the network impedance Z = 1.999760 k .

  • Page 107: Wideband Output Accuracy At 1 Khz Test

    Wideband Output Accuracy at 1 kHz Test Table 3-11. Equipment Required for Testing and Calibrating the Wideband Option Equipment Model or Description AC Measurement Standard Fluke 5790A with Wideband Option -03 Wideband cable Supplied with 5700A-03 50 Termination Supplied with 5700A-03 Adapter Pomona 1269 BNC(F) to dual banana plug.

  • Page 108: Wideband Output Flatness Test

    5700A/5720A Series II Calibrator Service Manual Table 3-12. Wideband Adjustment Tolerance 5700A/5720A Series II Wideband 5790A Adjustment Counts Output 2.10000V 1.00000V 300.000 mV 100.000 mV 30.0000 mV 10.0000 mV 3.00000 mV 1000.00 V 3-26. Wideband Output Flatness Test Use Table 3-32 as a test record. To perform wideband output flatness test, proceed as follows: 1.

  • Page 109: Wideband Flatness Calibration Procedure

    Calibration and Verification Wideband Output Flatness Test 3-27. Wideband Flatness Calibration Procedure This procedure is the only part of full verification that stores calibration constants in the Calibrator. This is not a verification test, it is a calibration procedure. Because this part of calibration is recommended to be done only every two years, the same interval as full verification, it is included here and not under Calibration earlier in this chapter and in Chapter 7 of the 5700A/5720A Series II Operator Manual.

  • Page 110: Optional Tests

    DC Voltage Reference Standard Fluke 732B Reference Divider Fluke 752A Null Detector EM Electronics N11(Fluke 845A) Kelvin-Varley Divider Fluke 720A 3-29. DC Voltage Load Regulation Test Use Table 3-34 for a test record. Proceed as follows to test the dc voltage load regulation: 1.

  • Page 111: Dc Voltage Linearity Test

    Calibration and Verification Optional Tests 3. Repeat load regulation testing at the remaining Calibrator outputs shown in Table 3-47. 4. Set the Calibrator to standby and disconnect all equipment from the Calibrator. 3-30. DC Voltage Linearity Test Use Table 3-35 for a test record. Proceed as follows to test the dc voltage linearity: 1.
  • Page 112 5700A/5720A Series II Calibrator Service Manual CALIBRATOR OSCILLOSCOPE TRUE RMS MAINFRAME* VOLTMETER (UUT) 7A22 VERTICAL PLUG-IN OUTPUT COAX SHIELDED TWISTED PAIR CLIP LEADS 3' APPROX GR BANANA PLUGS OSCILLOSCOPE AND AC DIFFERENTIAL SHIELDED TWISTED PAIR CABLE DETAIL VOLTMETER SHOULD BE ISOLATED FROM THE POWER LINE GROUND.

  • Page 113: Dc Voltage Output Noise 0 1 To 10 Hz Test

    Calibration and Verification Optional Tests 3-32. DC Voltage Output Noise 0 1 to 10 Hz Test Proceed as follows to test for dc voltage output noise in the range 0.1 to 10 Hz: 1. Place the 8520A DMM into Math Program 8 with the Display Option Register set to register 8.3 (Standard Deviation Computed Variable)as follows: a.

  • Page 114: Ac Voltage Overshoot Test

    5700A/5720A Series II Calibrator Service Manual Note If the spectrum analyzer input impedance is 50 , do not use a separate termination. 2. With 0 dBm output programmed from the Calibrator wideband output, select frequencies over the band of 1 MHz to 30 MHz and verify that use the spectrum analyzer to verify that any harmonics are below -40 dBm for fundamentals up to 10 MHz and below -34 dBm for fundamentals of 10 MHz and above.
  • Page 115 Voltage Reference Fluke 732B 10V nominal, true value certified to within 1.5 ppm Resistance Standards Fluke 742A Series, 1 1 nominal, true value certified to within 10 and 10 k ppm, 10 k nominal, true value certified to within 4 ppm...

  • Page 116: Determining Test Limits For Other Calibration Intervals

    DC Current Shunt (2) Fluke Y5020 Range: 10A Uncertainty: 0.008% AC/DC Current Shunt Fluke A40-20 mA Ranges: 20 mA, 200 mA, 2A and 10A Fluke A40-200 mA Frequency: 10 Hz to 10 kHz Fluke A40-2A Uncertainty: 310 ppm at 10 Hz; 100 ppm Fluke A40A-10A (2) at 20 Hz;...
  • Page 117 Calibration and Verification Determining Test Limits for Other Calibration Intervals Example 1 shows you how to calculate a specification limit for a specific test level from a specification listed as a percentage (or parts per million) of reading plus a floor error in microvolts, millivolts, miroamps, or nanoamps.
  • Page 122 5700A/5720A Series II Calibrator Service Manual Table 3-18. DC Voltage Test Record for 5720A 5720A Null Detector Divider 5720A Null Det Limit Meter Limit Output Reading( V) Setting Range ( V) Rattle ( V) 0.1V 0.22V 0.1V 1.20 (2) 2.2V 4.8 V (2) 0.55 1V (3)
  • Page 123 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-19. DC Voltage Test Record for 5700A 5700A Null Detector Divider 5700A Null Det Limit Meter Limit Output Reading( V) Setting Range ( V) Rattle ( V) 0.1V 0.22V 0.1V 1.45 (2) 2.2V...
  • Page 124 5700A/5720A Series II Calibrator Service Manual Table 3-20. Direct Current Accuracy Test Record (5720A) Characterizing dc DMM @ 200 mV and 2.0V Column A Column B DC DMM UUT Actual Test Limit, Output Rdg. Std Res UUT Error Setting Error (A+B) 90-day Current Correction...
  • Page 125 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-21. Direct Current Accuracy Test Record (5700A) Characterizing dc DMM @ 200 mV and 2.0V Column A Column B UUT Actual Test Limit, Output DC DMM Std Res UUT Error Error (A+B) 90-day Current...
  • Page 126 5700A/5720A Series II Calibrator Service Manual Table 3-23. 5720A AC Voltage Output Test Record 5790A Error Output Spec 1-Year Frequency Test Limit (4) Display Level ( ppm ) Spec Factor ( ppm) Reading ( ppm) 90-Day Test Record 2 mV 1 kHz 2590 1070...
  • Page 127 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-23. 5720A AC Voltage Test Record (cont) 5790A Error Output Spec 1-Year Frequency Test Limit (4) Display Level ( ppm ) Spec Factor ( ppm) Reading ( ppm) 200V 1 kHz 2.05 0.936...
  • Page 128 5700A/5720A Series II Calibrator Service Manual Table 3-24. 5700A AC Voltage Output Test Record 5790A Error Output Spec 1-Year Frequency Test Limit (4) Display Level ( ppm ) Spec Factor ( ppm) Reading ( ppm) 90-Day Test Record 2 mV 1 kHz 2610 1070...
  • Page 129 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-24. 5700A AC Voltage Output Test Record (cont) 5790A Error Output Spec 1-Year Frequency Test Limit (4) Display Level ( ppm ) Spec Factor ( ppm) Reading ( ppm) 200V 1 kHz 2.74...
  • Page 130 5700A/5720A Series II Calibrator Service Manual Table 3-26. 5720A AC Current 20 mA to 10A Accuracy Test Record 2A, 200 mA, 20 mA and 10A Test Record A40 Shunt UUT Error Calculated Output Freq Spec AC-DC Diff Display Error Current 40 Hz 1 kHz 5 kHz...
  • Page 131 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-27. 5700A AC Current 20 mA to 10A Accuracy Test Record 2A, 200 mA, 20 mA and 10A Test Record (10A Only for 5725A) A40 Shunt UUT Error Calculated Output Freq Specs...
  • Page 132 5700A/5720A Series II Calibrator Service Manual Table 3-28. 5720A AC Current 2 mA and 200 A Accuracy Test Record 5790A Test Limits Output Spec. Transfer Frequency Error Current Spec Factor (90-day) 2 mA 10 Hz 1.45 0.874 2 mA 20 Hz 2.74 0.971 2 mA...
  • Page 133 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-30. Wideband Frequency Accuracy Test Record Frequency ( Hz ) Frequency Measured Tolerance Limits 10 Hz 99.99 ms to 100.01 ms 100 Hz 9.999 ms to 10.001 ms 300 Hz 299.97 Hz to 300.03 Hz 500 Hz 499.95 Hz to 500.05 Hz...
  • Page 134 5700A/5720A Series II Calibrator Service Manual Table 3-31. Wideband Accuracy at 1 kHz Test Record 5790A Output Measured Spec Test 1-Year Spec Level Error ppm (90-day) Limit Factor 2.1V 2238 1.000 2238 1.0V 2900 1.000 2900 0.3V 2833 74.5 1.000 2833 0.1V 3400...
  • Page 135 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-32. Wideband Flatness Test Record (cont) 5790A Output Measured Spec Test Limit Frequency 1-Year Level Flatness Error Factor Spec (90-day) 30 mV 10 kHz 1000 2.00 0.932 120 kHz 1000 2.00 0.932...
  • Page 136 5700A/5720A Series II Calibrator Service Manual Table 3-33. Wideband Absolute Error 10 Hz to 500 kHz 1 kHz Absolute Flatness Error Error Sum 90-Day Output Frequency Error Spec Limit Level ( ppm) 2.1V 10 Hz 5238 30 Hz 2238 10 kHz 2238 120 kHz 2238...
  • Page 137 Calibration and Verification Determining Test Limits for Other Calibration Intervals Table 3-34. Load Regulation Test Record 5700A/5720A Series II Div. Setting 5700A/5720A Series II Change In Null Change In Out/Full Load Range Measured Null Limit 10V/199 3.1 V 100V 220V 100V/1999 42 V 1000V...
  • Page 138 0.4% (1) The 5700A/5720A Series II maximum volt-Hertz product is (2.2 x 10 ) The 300V level assumes that a Fluke 5725A Amplifier is attached. Table 3-38. Test Record for Flatness Check of the AC 2 mV Range Frequency UUT Error Display Reading...

  • Page 139: Maintenance

    Chapter 4 Maintenance Title Page 4-1. Introduction................... 4-3 4-2. Accessing the Fuse................4-3 4-3. Cleaning the Air Filter ................4-3 4-4. General Cleaning .................. 4-4 4-5. Cleaning PCA's ..................4-5 4-6. Access Procedures ................4-5 4-7. Top and Bottom Covers..............4-5 4-8.
  • Page 140 5700A/5720A Series II Calibrator Service Manual...

  • Page 141: Introduction

    Maintenance Introduction 4-1. Introduction Because this is a high performance instrument, it is not recommended that the user service the boards to the component level. In many different ways it is easy to introduce a subtle long-term stability problem by handling the boards. Access procedures are provided for those who want to replace a faulty module.

  • Page 142: General Cleaning

    5700A/5720A Series II Calibrator Service Manual To clean the air filter, refer to Figure 4-2 and proceed as follows: CHASSIS GROUND FUSE -F1 F4-1.EPS Figure 4-2. Air Filter 1. Disconnect line power. 2. Remove the filter element. a. Unscrew the knurled screw at the top of the air filter (counterclockwise). b.

  • Page 143: Cleaning Pca's

    Maintenance Cleaning PCA's 4-5. Cleaning PCA's Printed circuit assemblies only need cleaning after repair work. After soldering on a pca, remove flux residue using isopropyl alcohol and a cotton swab. 4-6. Access Procedures WXWarning Servicing described in this section is to be performed by qualified service personnel only.

  • Page 144: Rear Panel Assembly Access

    5700A/5720A Series II Calibrator Service Manual 4-11. Rear Panel Assembly Access Refer to Figure 4-4 during the following procedure: REMOVE REMOVE REMOVE FACK SCREWS TO SEPARATE THE REAR PANEL CIRCUIT BOARD FROM THE METAL HOUSING. F4-3.EPS Figure 4-4. Rear Panel Assembly Access 1.

  • Page 145: Display Assembly Removal And Installation

    Maintenance Access Procedures F4-4.EPS Figure 4-5. Front Panel Removal 1. Remove the Calibrator top and bottom covers. 2. Remove the single screw at the top of the Front Panel and the six hex screws on the front handle sides. Then grasp both handles and gently tilt the Front Panel down and away from the mainframe, disengaging the green power button.

  • Page 146: Analog Assembly Removal And Installation

    5700A/5720A Series II Calibrator Service Manual 4. Remove the output adjustment knob flywheel by taking out its center screw. Hold the wheel in place by inserting a pencil in one of the flywheel holes and pressing on one of the plastic standoffs. 5.
  • Page 147 Maintenance Access Procedures IEEE RS232 A21 REAR PANEL PCA VOLTAGE SELECT SWITCHES A18 FILTER/PA SUPPLY PCA A17 REGULATOR/GUARD CROSSING PCA CAPTIVE A16 POWER AMPLIFIER PCA SCREWS A15 HIGH VOLTAGE/HIGH CURRENT PCA (COMPONENTS FACE REAR) A14 HIGH VOLTAGE CONTROL PCA A13 OSCILLATOR OUTPUT PCA A12 OSCILLATOR CONTROL PCA A11 DAC PCA A10 OHMS MAIN PCA...

  • Page 148: Digital Assembly Removal And Installation

    5700A/5720A Series II Calibrator Service Manual 4-16. Digital Assembly Removal and Installation Remove the CPU Assembly or the Digital Power Supply Assembly by pulling straight up at the top corners of the assembly. In relation to the chassis side, the CPU Assembly components face toward, and the Digital Power Supply Assembly components face away.
  • Page 149 Maintenance Front/Rear Binding Post Reconfiguration Reverse this procedure when changing from rear to front output operation. 1. Remove instrument top and bottom covers and remove bottom analog guard cover. 2. Remove the instrument front panel by removing the three hex screws on each front handle side and a single screw on the top of the front panel.

  • Page 150: Installing A Wideband Ac Module (Option -03)

    5700A/5720A Series II Calibrator Service Manual 4-20. Installing a Wideband AC Module (Option -03) WCaution The Wideband option circuit board assemblies contain static- sensitive components. Use caution to avoid static discharge when handling the modules. The procedure that follows can be used to install a 5700A-03 Wideband AC Voltage module in a Calibrator.

  • Page 151: Using Remote Commands Reserved For Servicing

    Maintenance Using Remote Commands Reserved for Servicing 2. Follow the access procedures to remove the digital side cover. 3. Remove the CPU Assembly (A20). 4. Desolder and remove battery BT1. 5. Solder a replacement battery in place (refer to the parts list for replacement information if necessary.) 6.
  • Page 152 5700A/5720A Series II Calibrator Service Manual FATALITY? Description: Returns the list of the fatal faults logged since the list was last cleared by the FATALCLR command. (Sequential command.) Parameter: None Response: (String) The list of faults, one per line in the following format: <date>...

  • Page 153: Fault Codes

    Maintenance Fault Codes 4-25. Fault Codes 100-Level Faults: Air Flow Monitoring Subsystem Low Air Flow 200-Level Faults: 5725 Boost System 5725 No Error 5725 Self-Test ROM Failure 5725 Self-Test RAM Failure 5725 Self-Test EEPROM Failure 5725 Self-Test Data Bus Failure 5725 Self-Test CLAMPS Circuit Failure 5725 Self-Test HVCLR Circuit Failure 5725 Self-Test DAC Failure...
  • Page 154 5700A/5720A Series II Calibrator Service Manual 5725 RESET (power-up or watchdog timer) 5725 Guard-Crossing Timeout 5725 llegal/Unexecutable Command 5725 Non-Maskable nterrupt Occurred 5725 HVCLEAR Circuit Activated Output Tripped To Standby 400-Level Faults: Calibration Constant Subsystem Bad Cal Constant 500-Level Faults: Configuration Finder Subsystem Bad Mode To CNFmodeRanges Configuration Table Overflow Bad Amplifier Type Selection...
  • Page 155 Maintenance Fault Codes Outside Entry Limits Magnitude Too Large For Calibrator Magnitude Too Small For Calibrator Frequency Too Large For Calibrator Frequency Too Small For Calibrator Calibrator Cannot Source That Value V Limit Outside Calibrator Ability Limit Outside Calibrator Ability Cannot Adjust Frequency To <<= 0 Hz Offset Not Allowed Now Scale Not Allowed Now...
  • Page 156 5700A/5720A Series II Calibrator Service Manual nvalid Calibrator Setup Block Cannot Format, 5725 Switch n NORMAL Cannot Store, 5725 Switch n NORMAL Calibration Steps Out Of Order Cannot Use External Guard Now Cannot Use Ext Guard On Selected Range Cannot Set String, Rear Switch in NORMAL Present Output Exceeds Selected Limit Bad Selector For Reference Calibration Cannot Change Range Now...
  • Page 157 Maintenance Fault Codes 1302 Output Tripped To Standby 1303 DC Zero Calibration is Needed (Every 30 Days) 1400-Level Faults: Software Timer Subsystem 1400 Cannot nstall MTtick() 1401 Bad Timer Selector 1500-Level Faults: Guard Crossing Receive Subsystem 1500 Could not ACK Packet From nguard 1501 llegal...
  • Page 158 5700A/5720A Series II Calibrator Service Manual 1812 Ohms Called for Non-Ohms Range 1813 Cannot Phase Lock, Output Not AC 1814 Cannot Phase Shift, Output Not AC 1815 Bad Wide Band Range 1816 Freq. Too High Even For Wide Band 1817 llegal Current Output Location 1818 Output Current Out Of Tolerance...
  • Page 159 Maintenance Fault Codes 2000-Level Faults: Analog Operations Manager Subsystem 2000 Bad Command Code 2001 Bad Signal 2002 Long Term Command n Progress 2003 Guard Crossing Protocol Failed To Start 2004 Fatal Fault, Output Tripped 2005 Tripped While Calibrating or Diagnosing 2100-Level Faults: Output Display Driver Subsystem 2100 Bad Display Selector...
  • Page 160 5700A/5720A Series II Calibrator Service Manual 2221 nvalid Decimal Number 2222 nvlaid Hexadecimal Block 2223 nvalid Hexadecimal Number 2224 Too Many Parameters 2225 nvalid Octal Number 2226 Too Many Characters 2227 nvalid String 2228 nvalid Register Address 2229 nvalid Cal Constant Name 2230 Remote Serial Port Dead 2231...
  • Page 161 Maintenance Fault Codes 2513 Could not Cal 220 mV Gain S4 2514 Could not Cal 220V DC Offset 2515 Could not Cal 220V DC Rnet 2516 Could not Cal 220V DC Gain 2517 Could not Cal ACV Gain 2518 Flatness Cal: Main Sensor Fail? 2519 Flatness Cal: AC Cal Sensor Fail? 2520...
  • Page 162 5700A/5720A Series II Calibrator Service Manual 2546 Could not Ext Cal 10K Ohm Std (Meas 2) 2547 Could not Ext Cal 10K Ohm Std (Meas 3) 2548 Could not Cal 10K Ohm (Meas 1) 2549 Could not Cal 10K Ohm (Meas 2) 2550 Could not Cal 10K Ohm (Meas 3) 2551...
  • Page 163 Maintenance Fault Codes 2579 Could not Cal 19 Ohm (Meas 1) 2580 Could not Cal 19 Ohm (Meas 2) 2581 Could not Ext Cal 1 Ohm (0.26V CM Meas) 2582 Could not Ext Cal 1 Ohm (Ext Meas) 2583 Could not Ext Cal 1 Ohm (0.13V CM Meas) 2584 Could not Ext Cal 1 Ohm ( nt Meas)
  • Page 164 5700A/5720A Series II Calibrator Service Manual 2612 220 µA AC Flat Bad AC Cal Sensor? 2613 220 µA AC Flat Diverge 2614 2.2 mA AC Flat Early Fail 2615 2.2 mA AC Flat Bad AC Cal Sensor? 2616 2.2 mA AC Flat Diverge 2617 22 mA...
  • Page 165 Maintenance Fault Codes 2645 Spare 2646 DAC Appears To Not Meet Linearity Spec 2647 ACV Buffer Offset Too Large 2648 5725 ACV Flat Test Cap Too Large 2649 5725 ACV Flat Test Cap Too Large 2650 Could not Cal 100M Ohm (Meas 2) 2700-Level Faults: Self Diagnostics Subsystem (Current) 2700 A7: 8255 Control Word...
  • Page 166 5700A/5720A Series II Calibrator Service Manual 2807 A11: ADC Amp Output Offset 2808 A11: ADC Amp Gain Error 2809 A11: DAC Monitoring Fault 2810 A11: +11V DC Range Fault 2811 A11: -11V DC Range Fault 2812 A11: +22V DC Range Fault 2813 A11: -22V DC Range Fault 2814...
  • Page 167 Maintenance Fault Codes 3112 A15: HV +DC Ref/Error Amplitude Fault 3113 A15: HV -DC Preamplifier Fault 3114 A15: HV -DC Series Pass & Current Fault 3115 A15: HV -DC High Voltage output Fault 3116 A15: HV -DC Reference/Error Amp Fault 3117 A14/A15: HV +DC Current Error Amp Fault 3118...
  • Page 168 5700A/5720A Series II Calibrator Service Manual 3200-Level Faults: Self Diagnostics Subsystem (misc) 3200 Assemblies Missing 3201 Unknown Diagnostic Test 3202 5725 ACV Sense Amp Fault 3203 5725 ACV Standby 5725 Fault 3204 5725 ACV Operate 5725 Fault 3205 5725 ACV Cal Sensor Test Died 3206 5725 ACV Cal Sensor Fault 3207...
  • Page 169 Maintenance Fault Codes 3313 A9/A10: 10K Ohm Diagnostic Fault 3314 A9/A10: 19K Ohm Cal Diag Fault 3315 A9/A10: 10 Ohm Cal Diag Fault 3316 A9/A10: 19 Ohm Cal Diag Fault 3317 A9/A10: 100K Ohm Ratio Fault 3318 A9/A10: 190K Ohm Ratio Fault 3319 A9/A10: 1M Ohm Ratio Fault 3320...
  • Page 170 5700A/5720A Series II Calibrator Service Manual 3400-Level Faults: Self Diagnostics Subsystem (Oscillator) 3400 A12: 8255 Control Word 3401 A12: 8255 Port A 3402 A12: 8255 Port B 3403 A12: 8255 Port C 3404 A13: 8255 Control Word 3405 A13: 8255 Port A 3406 A13: 8255 Port B 3407...
  • Page 171 Maintenance Fault Codes 3500-Level Faults: Self Diagnostics Subsystem (Power Amp) 3500 A16: 8255 Control Word 3501 A16: 8255 Port A 3502 A16: 8255 Port B 3503 A16: 8255 Port C 3507 A16: PA Supplies Are Off 3508 A16/A14: 220V AC Range Output Fault 3509 A16: Amplifier Loop Not Regulated 3510...
  • Page 172 5700A/5720A Series II Calibrator Service Manual 3613 -15 OSC Supply Fault 3614 OSC COM Ground Fault 3615 S COM Ground Fault 3700-Level Faults: Self Diagnostics Subsystem (Rear 3700 A21: 8255 Control Word 3701 A21: 8255 Port A Fault 3702 A21: 8255 Port B Fault 3703 A21: 8255 Port C Fault 3704...
  • Page 173 Maintenance Fault Codes 3826 A8: 8255 Was Reset 3827 Assembly A8 Too Hot 3900-Level Faults: Self Diagnostics Subsystem (Wideband) 3900 A5: 8255 Control Word 3901 A5: 8255 Port A Fault 3902 A5: 8255 Port B Fault 3903 A5: 8255 Port C Fault 3904 Optional Assemblies A5/A6 Are Missing 3905...
  • Page 174 5700A/5720A Series II Calibrator Service Manual 4007 nguard CPU Reset 4008 nguard CPU A/D Timeout 4009 nguard CPU Timed Out On Main CPU 4010 nguard CPU Detected A Command Error 4011 Bad Y5000 Get/Set Selector 4012 Sequencer Timed Out Waiting For nguard 4013 llegal Analog State Command For 5725...
  • Page 175 Maintenance Fault Codes 4300-Level Faults: Self Test Subsystem 4301 ROM Checksum 4302 4303 Real Time Clock 4304 Keyboard 4305 Output Display 4306 Control Display 4307 EEE488 4308 Rear Panel DUART 4309 Guard Crossing DUART 4310 nterrupt Hardware 4311 nguard CPU ROM Fault 4312 nguard CPU RAM Fault 4313...
  • Page 176 5700A/5720A Series II Calibrator Service Manual 4-38...

  • Page 177: List Of Replaceable Parts

    Chapter 5 List of Replaceable Parts Title Page 5-1. Introduction................... 5-3 5-2. How to Obtain Parts................5-3 5-3. Service Centers ..................5-3 5-4. Parts List ....................5-3...
  • Page 178 5700A/5720A Series II Calibrator Service Manual...

  • Page 179: Introduction

    Quantity Refer to Contacting Fluke earlier in this manual for more information. 5-3. Service Centers To locate a service center, use the information located in Contacting Fluke earlier in this manual. 5-4. Parts List The following pages contain the module-level parts lists for the 5700A/5720A Series II...
  • Page 180 5700A/5720A Series II Calibrator Service Manual Table 5-1. Front Panel Final Assembly Reference Fluke Stock Description Tot Qty Notes Designator KEYBOARD PCA 761049 FRONT PANEL PCA 761031 ANALOG MOTHERBOARD PCA 761023 DIGITAL MOTHERBOARD PCA 760942 CURRENT/HIGHT RESOLUTION OSCILLTOR. PCA 764613...
  • Page 181 List of Replaceable Parts Parts List 5700A-T&B f6-1.eps Figure 5-1. Front Panel Final Assembly...
  • Page 182 5700A/5720A Series II Calibrator Service Manual Table 5-1. Chassis Final Assembly Reference Fluke Stock Description Tot Qty Notes Designator TRANSFORMER/MODULE ASSEMBLY 813527 B1,B2 FAN/CONNECTOR ASSEMBLY 761213 BINDING HEAD, PLATED 102889 FUSE,.25X1.25,1.25A,250V,SLOW 109231 INSULATOR, ANALOG BOTTOM 775361 SCREW,PH,P,LOCK,SS,6-32,.500 320051 SCREW,PH,P,LOCK,STL,6-32,.750 114223 SCREW,PH,P,LOCK,STL,6-32,.250...
  • Page 183 List of Replaceable Parts Parts List 5700A T&B (1 of 2) f61a1.eps Figure 5-2. Chassis Final Assembly...
  • Page 184 5700A/5720A Series II Calibrator Service Manual 5700A T&B (2 of 2) f61a2.eps Figure 5-2. Chassis Final Assembly (cont)
  • Page 185 List of Replaceable Parts Parts List Table 5-1. Rear Panel Final Assembly Reference Fluke Stock Description Tot Qty Notes Designator FUSE,.25X1.25,1.25A,250V,SLOW 851936 FILTER, AIR 813493 SCREW,CAP,SCKT,SS,8-32,.375 837575 SCREW,PH,P,LOCK,STL,6-32,.750 114223 SCREW,PH,P,LOCK,STL,6-32,.250 152140 REAR PANEL 886387 GROMMET,EXTRUDED,POLYETHYLENE,.085 854351 DECAL, REAR OUTPUT CABLE DIAGRRAM 886291 GROMMET,NYLON,NAT,.056X.150X.100X.155...
  • Page 186 5700A/5720A Series II Calibrator Service Manual 5700A-T&B f61b.eps Figure 5-3. Rear Panel Final Assembly 5-10...

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