Fluke 5520A Service User manual

®
5520A
Multi-Product Calibrator
Service Manual
PN 802303
April 1999 Rev. 1, 12/02
© 1999, 2002 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies

LIMITED WARRANTY & LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and
services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of
a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in
Fluke’s opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal
conditions of operation or handling. Fluke warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been properly recorded on non-defective media.
Fluke does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
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.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99

Safety Information
This Calibrator complies with IEC publication 1010-1 (1992-1), Safety Requirements for
Electrical Measuring, Control and Laboratory Equipment, and ANSI/ISA-S82.01-1994,
and CAN/CSA-C22.2 No. 1010.1-92. This manual contains information, warnings, and
cautions that must be followed to ensure safe operation and to maintain the Calibrator in
a safe condition. Use of this Calibrator in a manner not specified herein may impair the
protection provided by the Calibrator.
This Calibrator is designed for IEC 1010-1 Installation Category II use. It is not designed
for connection to circuits rated over 4800 VA.
Warning statements identify conditions or practices that could result in personal injury or
loss of life.
Caution statements identify conditions or practices that could result in damage to
equipment.
SYMBOLS MARKED ON THE CALIBRATOR
WARNING Risk of electric shock. Refer to the manual (see the Index for
references).
GROUND Ground terminal to chassis (earth).
Attention Refer to the manual (see the Index for references). This
symbol indicates that information about usage of a feature is contained in
the manual.
AC POWER SOURCE
The Calibrator is intended to operate from an ac power source that will not apply more
than 264V ac rms between the supply conductors or between either supply conductor
and ground. A protective ground connection by way of the grounding conductor in the
power cord is required for safe operation.
USE THE PROPER FUSE
To avoid fire hazard, use only the specified replacement fuse:
•For 100 V or 120 V operation, use a 5A/250V time delay fuse (Fluke PN 109215).
•For 220 V or 240 V operation, use a 2.5A/250V time delay fuse (Fluke PN 851931).
GROUNDING THE CALIBRATOR
The Calibrator uses controlled overvoltage techniques that require the Calibrator to be
grounded whenever normal mode or common mode ac voltages or transient voltages
may occur. The enclosure must be grounded through the grounding conductor of the
power cord, or through the rear panel CHASSIS GROUND binding post.

USE THE PROPER POWER CORD
Use only the power cord and connector appropriate for the voltage and plug
configuration in your country.
Use only a power cord that is in good condition.
Refer power cord and connector changes to qualified service personnel.
DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES
To avoid explosion, do not operate the Calibrator in an atmosphere of explosive gas.
CHECK INSULATION RATINGS
Verify that the voltage applied to the unit under test does not exceed the insulation rating
of the UUT and the interconnecting cables.
DO NOT REMOVE COVER DURING OPERATION
To avoid personal injury or death, do not remove the Calibrator cover without first
removing the power source connected to the rear panel. Do not operate the Calibrator
without the cover properly installed. Normal calibration is accomplished with the cover
closed. Access procedures and the warnings for such procedures are contained in the
Service Manual. Service procedures are for qualified service personnel only.
DO NOT ATTEMPT TO OPERATE IF PROTECTION MAY BE IMPAIRED
If the Calibrator appears damaged or operates abnormally, protection may be impaired. Do
not attempt to operate the Calibrator under these conditions. Refer all questions of proper
Calibrator operation to qualified service personnel.

i
Table of Contents
Chapter Title Page
1 Introduction and Specifications ........................................................ 1-1
1-1. Introduction........................................................................................... 1-3
1-2. Operation Overview.............................................................................. 1-4
1-3. Local Operation................................................................................ 1-4
1-4. Remote Operation (RS-232)............................................................. 1-4
1-5. Remote Operation (IEEE-488)......................................................... 1-4
1-6. Service Information .............................................................................. 1-5
1-7. How to Contact Fluke........................................................................... 1-5
1-8. Specifications........................................................................................ 1-6
1-9. General Specifications...................................................................... 1-7
1-10. DC Voltage Specifications............................................................... 1-8
1-11. DC Current Specifications................................................................ 1-9
1-12. Resistance Specifications ................................................................. 1-11
1-13. AC Voltage (Sinewave) Specifications............................................ 1-12
1-14. AC Current (Sinewave) Specifications............................................. 1-14
1-15. Capacitance Specifications............................................................... 1-16
1-16. Temperature Calibration (Thermocouple) Specifications................ 1-17
1-17. Temperature Calibration (RTD) Specifications................................ 1-18
1-18. DC Power Specification Summary................................................... 1-19
1-19. AC Power (45 Hz to 65 Hz) Specification Summary, PF=1............ 1-19
1-20. Power and Dual Output Limit Specifications................................... 1-20
1-21. Phase Specifications......................................................................... 1-21
1-22. Calculating Power Uncertainty......................................................... 1-22
1-23. Additional Specifications...................................................................... 1-23
1-24. Frequency Specifications.................................................................. 1-23
1-25. Harmonics (2nd to 50th) Specifications........................................... 1-24
1-26. AC Voltage (Sinewave) Extended Bandwidth Specifications.......... 1-25
1-27. AC Voltage (Non-Sinewave) Specifications.................................... 1-26
1-28. AC Voltage, DC Offset Specifications............................................. 1-27
1-29. AC Voltage, Squarewave Characteristics......................................... 1-28
1-30. AC Voltage, Trianglewave Characteristics (typical)........................ 1-28
1-31. AC Current (Sinewave) Extended Bandwidth Specifications.......... 1-28
1-32. AC Current (Non-Sinewave) Specifications .................................... 1-29
1-33. AC Current, Squarewave Characteristics (typical)........................... 1-31
1-34. AC Current, Trianglewave Characteristics (typical)........................ 1-31

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2 Theory of Operation ........................................................................... 2-1
2-1. Introduction........................................................................................... 2-3
2-2. Encoder Assembly (A2)........................................................................ 2-4
2-3. Synthesized Impedance Assembly (A5)............................................... 2-4
2-4. DDS Assembly (A6)............................................................................. 2-5
2-5. Current Assembly (A7)......................................................................... 2-6
2-6. Voltage Assembly (A8) ........................................................................ 2-7
2-7. Main CPU Assembly (A9).................................................................... 2-8
2-8. Power Supplies ..................................................................................... 2-8
2-9. Outguard Supplies............................................................................ 2-8
2-10. Inguard Supplies............................................................................... 2-8
3 Calibration and Verification............................................................... 3-1
3-1. Introduction........................................................................................... 3-3
3-2. Equipment Required for Calibration and Verification.......................... 3-3
3-3. Calibration ............................................................................................ 3-5
3-4. Starting Calibration .......................................................................... 3-5
3-5. DC Volts Calibration (NORMAL Output)....................................... 3-6
3-6. DC Volts Calibration (30 Vdc and Above) ...................................... 3-7
3-7. AC Volts Calibration (NORMAL Output)....................................... 3-8
3-8. Thermocouple Function Calibration................................................. 3-10
3-9. DC Current Calibration .................................................................... 3-11
3-10. AC Current Calibration .................................................................... 3-14
3-11. DC Volts Calibration (AUX Output)................................................ 3-20
3-12. AC Volts Calibration (AUX Output)................................................ 3-20
3-13. Resistance Calibration...................................................................... 3-21
3-14. Capacitance Calibration.................................................................... 3-24
3-15. Calibration Remote Commands............................................................ 3-27
3-16. Generating a Calibration Report........................................................... 3-33
3-17. Performance Verification Tests ............................................................ 3-34
3-18. Zeroing the Calibrator ...................................................................... 3-34
3-19. Verifying DC Volts (NORMAL Output) ......................................... 3-35
3-20. Verifying DC Volts (AUX Output).................................................. 3-36
3-21. Verifying DC Current....................................................................... 3-36
3-22. Verifying Resistance ........................................................................ 3-38
3-23. Verifying AC Voltage (NORMAL Output) ..................................... 3-40
3-24. Verifying AC Voltage (AUX Output).............................................. 3-42
3-25. Verifying AC Current....................................................................... 3-43
3-26. Verifying Capacitance...................................................................... 3-46
3-27. 200 µF to 110 mF Capacitance Verification .................................... 3-47
3-28. Capacitance Measurement................................................................ 3-47
3-29. Measurement Uncertainty................................................................. 3-51
3-30. Verifying Thermocouple Simulation (Sourcing).............................. 3-52
3-31. Verifying Thermocouple Measurement............................................ 3-52
3-32. Verifying Phase Accuracy, Volts and AUX Volts........................... 3-53
3-33. Verifying Phase Accuracy, Volts and Current ................................. 3-54
3-34. Verifying Frequency Accuracy ........................................................ 3-55
4 Maintenance........................................................................................ 4-1
4-1. Introduction........................................................................................... 4-3
4-2. Access Procedures ................................................................................ 4-3
4-3. Removing Analog Modules.............................................................. 4-3
4-4. Removing the Main CPU (A9)......................................................... 4-3

Contents (continued)
iii
4-5. Removing Rear Panel Assemblies.................................................... 4-4
4-6. Removing the Filter PCA (A12)....................................................... 4-4
4-7. Removing the Encoder (A2) and Display PCAs .............................. 4-4
4-8. Removing the Keyboard and Accessing the Output Block.............. 4-4
4-9. Diagnostic Testing................................................................................ 4-7
4-10. Running Diagnostics ........................................................................ 4-7
4-11. Testing the Front Panel..................................................................... 4-7
4-12. Complete List of Error Messages ......................................................... 4-8
5 List of Replaceable Parts................................................................... 5-1
5-1. Introduction........................................................................................... 5-3
5-2. How to Obtain Parts.............................................................................. 5-3
6 Oscilloscope Calibration Options ..................................................... 6-1
SC600 Option...................................................................................... 6-3
6-1. Introduction........................................................................................... 6-5
6-2. Maintenance.......................................................................................... 6-5
6-3. SC600 Specifications............................................................................ 6-6
6-4. Volt Specifications ........................................................................... 6-6
6-5. Edge Specifications.......................................................................... 6-7
6-6. Leveled Sine Wave Specifications................................................... 6-8
6-7. Time Marker Specifications ............................................................. 6-9
6-8. Wave Generator Specifications........................................................ 6-9
6-9. Pulse Generator Specifications......................................................... 6-10
6-10. Trigger Signal Specifications (Pulse Function)................................ 6-10
6-11. Trigger Signal Specifications (Time Marker Function) ................... 6-10
6-12. Trigger Signal Specifications (Edge Function)................................ 6-11
6-13. Trigger Signal Specifications (Square Wave Voltage Function) ..... 6-11
6-14. Trigger Signal Specifications ........................................................... 6-11
6-15. Oscilloscope Input Resistance Measurement Specifications............ 6-11
6-16. Oscilloscope Input Capacitance Measurement Specifications ......... 6-11
6-17. Overload Measurement Specifications............................................. 6-12
6-18. Theory of Operation.............................................................................. 6-12
6-19. Voltage Mode................................................................................... 6-12
6-20. Edge Mode........................................................................................ 6-12
6-21. Leveled Sine Wave Mode ................................................................ 6-12
6-22. Time Marker Mode........................................................................... 6-13
6-23. Wave Generator Mode ..................................................................... 6-13
6-24. Input Impedance Mode (Resistance)................................................ 6-13
6-25. Input Impedance Mode (Capacitance).............................................. 6-13
6-26. Overload Mode................................................................................. 6-13
6-27. Equipment Required for Calibration and Verification.......................... 6-15
6-28. SC600 Calibration Setup ...................................................................... 6-17
6-29. Calibration and Verification of Square Wave Voltage Functions ........ 6-18
6-30. Overview of HP3458A Operation.................................................... 6-18
6-31. Setup for SC600 Voltage Square Wave Measurements................... 6-18
6-32. Setup for SC600 Edge and Wave Gen Square Wave Measurements 6-20
6-33. DC Voltage Calibration.................................................................... 6-21
6-34. AC Voltage Calibration.................................................................... 6-21
6-35. Wave Generator Calibration............................................................. 6-22
6-36. Edge Amplitude Calibration............................................................. 6-22
6-37. Leveled Sine Wave Amplitude Calibration...................................... 6-23

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6-38. Leveled Sine Wave Flatness Calibration.......................................... 6-24
6-39. Low Frequency Calibration.......................................................... 6-24
6-40. High Frequency Calibration......................................................... 6-25
6-41. Pulse Width Calibration ................................................................... 6-25
6-42. MeasZ Calibration............................................................................ 6-26
6-43. Verification........................................................................................... 6-28
6-44. DC Voltage Verification................................................................... 6-29
6-45. Verification at 1 MΩ.................................................................... 6-29
6-46. Verification at 50 Ω..................................................................... 6-29
6-47. AC Voltage Amplitude Verification................................................. 6-31
6-48. Verification at 1 MΩ.................................................................... 6-31
6-49. Verification at 50 Ω..................................................................... 6-33
6-50. AC Voltage Frequency Verification................................................. 6-34
6-51. Edge Amplitude Verification............................................................ 6-35
6-52. Edge Frequency Verification............................................................ 6-35
6-53. Edge Duty Cycle Verification.......................................................... 6-36
6-54. Edge Rise Time Verification............................................................ 6-36
6-55. Edge Abberation Verification........................................................... 6-38
6-56. Tunnel Diode Pulser Drive Amplitude Verification......................... 6-39
6-57. Leveled Sine Wave Amplitude Verification .................................... 6-39
6-58. Leveled Sine Wave Frequency Verification..................................... 6-41
6-59. Leveled Sine Wave Harmonics Verification.................................... 6-42
6-60. Leveled Sine Wave Flatness Verification ........................................ 6-44
6-61. Equipment Setup for Low Frequency Flatness............................ 6-44
6-62. Equipment Setup for High Frequency Flatness............................ 6-44
6-63. Low Frequency Verification ........................................................ 6-46
6-64. High Frequency Verification........................................................ 6-46
6-65. Time Marker Verification................................................................. 6-48
6-66. Wave Generator Verification............................................................ 6-49
6-67. Verification at 1 MΩ.................................................................... 6-50
6-68. Verification at 50 Ω..................................................................... 6-50
6-69. Pulse Width Verification.................................................................. 6-53
6-70. Pulse Period Verification.................................................................. 6-54
6-71. MeasZ Resistance Verification......................................................... 6-54
6-72. MeasZ Capacitance Verification...................................................... 6-55
6-73. Overload Function Verification........................................................ 6-56
6-74. SC600 Hardware Adjustments.............................................................. 6-57
6-75. Equipment Required......................................................................... 6-57
6-76. Adjusting the Leveled Sine Wave Function..................................... 6-57
6-77. Equipment Setup.......................................................................... 6-57
6-78. Adjusting the Leveled Sine Wave VCO Balance......................... 6-58
6-79. Adjusting the Leveled Sine Wave Harmonics ............................. 6-58
6-80. Adjusting the Aberrations for the Edge Function............................. 6-59
6-81. Equipment Setup.......................................................................... 6-60
6-82. Adjusting the Edge Aberrations................................................... 6-60
SC300 Option...................................................................................... 6-63
6-83. Introduction........................................................................................... 6-65
6-84. Maintenance.......................................................................................... 6-65
6-85. SC300 Specifications............................................................................ 6-66
6-86. Voltage Function Specifications....................................................... 6-66
6-87. Edge Function Specifications........................................................... 6-67
6-88. Leveled Sine Wave Function Specifications.................................... 6-68
6-89. Time Marker Function Specifications.............................................. 6-69

Contents (continued)
v
6-90. Wave Generator Specifications........................................................ 6-69
6-91. Trigger Signal Specifications for the Time Marker Function .......... 6-70
6-92. Trigger Signal Specifications for the Edge Function ....................... 6-70
6-93. Theory of Operation.............................................................................. 6-71
6-94. Voltage Mode................................................................................... 6-71
6-95. Edge Mode........................................................................................ 6-71
6-96. Leveled Sine Wave Mode ................................................................ 6-71
6-97. Time Marker Mode........................................................................... 6-72
6-98. Wave Generator Mode ..................................................................... 6-72
6-99. Equipment Required for Calibration and Verification.......................... 6-74
6-100. SC300 Calibration Setup ...................................................................... 6-76
6-101. Calibration and Verification of Square Wave Functions...................... 6-77
6-102. Overview of HP3458A Operation.................................................... 6-77
6-103. Setup for Square Wave Measurements............................................. 6-77
6-104. DC Voltage Calibration.................................................................... 6-78
6-105. AC Square Wave Voltage Calibration.............................................. 6-79
6-106. Edge Amplitude Calibration............................................................. 6-80
6-107. Leveled Sine Wave Amplitude Calibration...................................... 6-80
6-108. Leveled Sine Wave Flatness Calibration.......................................... 6-81
6-109. Low Frequency Calibration.......................................................... 6-82
6-110. High Frequency Calibration......................................................... 6-82
6-111. Verification........................................................................................... 6-83
6-112. DC Voltage Verification................................................................... 6-83
6-113. Verification at 1 MΩ.................................................................... 6-83
6-114. Verification at 50 Ω..................................................................... 6-83
6-115. AC Voltage Amplitude Verification................................................. 6-86
6-116. Verification at 1 MΩ.................................................................... 6-86
6-117. Verification at 50 Ω..................................................................... 6-88
6-118. AC Voltage Frequency Verification................................................. 6-89
6-119. Edge Amplitude Verification............................................................ 6-90
6-120. Edge Frequency Verification............................................................ 6-91
6-121. Edge Duty Cycle Verification.......................................................... 6-92
6-122. Edge Rise Time Verification............................................................ 6-92
6-123. Edge Abberation Verification........................................................... 6-94
6-124. Leveled Sine Wave Amplitude Verification .................................... 6-95
6-125. Leveled Sine Wave Frequency Verification..................................... 6-96
6-126. Leveled Sine Wave Harmonics Verification.................................... 6-97
6-127. Leveled Sine Wave Flatness Verification ........................................ 6-99
6-128. Equipment Setup for Low Frequency Flatness............................ 6-99
6-129. Equipment Setup for High Frequency Flatness............................ 6-99
6-130. Low Frequency Verification ........................................................ 6-101
6-131. High Frequency Verification........................................................ 6-101
6-132. Time Marker Verification................................................................. 6-103
6-133. Wave Generator Verification............................................................ 6-104
6-134. Verification at 1 MΩ.................................................................... 6-105
6-135. Verification at 50 Ω..................................................................... 6-105
6-136. SC300 Hardware Adjustments.............................................................. 6-107
6-137. Equipment Required......................................................................... 6-107
6-138. Adjusting the Leveled Sine Wave Function..................................... 6-108
6-139. Equipment Setup.......................................................................... 6-108
6-140. Adjusting the Leveled Sine Wave Harmonics ............................. 6-108
6-141. Adjusting the Aberrations for the Edge Function............................. 6-109
6-142. Equipment Setup.......................................................................... 6-109
6-143. Adjusting the Edge Aberrations................................................... 6-109
Index

5520A
Service Manual
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vii
List of Tables
Table Title Page
3-1. Consolidated List of Required Equipment for Calibration and Verification.......... 3-3
3-2. Test Equipment Required for Calibrating DC Volts.............................................. 3-6
3-3. Calibration Steps for DC Volts .............................................................................. 3-7
3-4. Test Equipment Required for Calibrating AC Volts.............................................. 3-8
3-5. Calibration Steps for AC Volts .............................................................................. 3-9
3-6. Test Equipment Required for Calibrating the Thermocouple Function................. 3-10
3-7. Calibration Steps for Thermocouple Measurement................................................ 3-10
3-8. Test Equipment Required for Calibrating DC Current........................................... 3-12
3-9. Calibration Steps for DC Current........................................................................... 3-13
3-10. Test Equipment Required for Calibrating AC Current........................................... 3-15
3-11. Calibration Steps for AC Current........................................................................... 3-16
3-12. Calibration Steps for AUX DC Volts..................................................................... 3-20
3-13. Calibration Steps for AUX Output AC Volts......................................................... 3-20
3-14. Test Equipment Required for Calibrating Resistance............................................ 3-21
3-15. Calibration Steps for Resistance ............................................................................ 3-22
3-16. Test Equipment Required for Calibrating Capacitance.......................................... 3-24
3-17. Calibration Steps for Capacitance.......................................................................... 3-25
3-18. Jumping to a Specific Calibration Step.................................................................. 3-27
3-19. Verification Tests for DC Voltage (NORMAL Output) ........................................ 3-35
3-20. Verification Tests for DC Voltage (AUX Output)................................................. 3-36
3-21. Shunt Values for DC Current Calibration and Verification................................... 3-36
3-22. Verification Tests for DC Current (AUX Output) ................................................. 3-37
3-23. Verification Tests for Resistance ........................................................................... 3-38
3-24. Verification Tests for AC Voltage (NORMAL Output) ........................................ 3-40
3-25. Verification Tests for AC Voltage (AUX Output)................................................. 3-42
3-26. Shunt Values for AC Current Verification............................................................. 3-43
3-27. Verification Tests for AC Current.......................................................................... 3-44
3-28. Verification Tests for Capacitance......................................................................... 3-46
3-29. Test Equipment Required for High-value Capacitance Measurement................... 3-48
3-30. Verification Tests for Thermocouple Simulation................................................... 3-52
3-31. Verification Tests for Thermocouple Measurement............................................... 3-52
3-32. Verification Tests for Phase Accuracy, V and V ................................................... 3-53
3-33. Verification Tests for Phase Accuracy, V and I..................................................... 3-54
3-34. Verification Tests for Frequency............................................................................ 3-55
4-1. Error Message Format............................................................................................ 4-8

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5-1. Chassis Assembly................................................................................................... 5-4
5-2. Front Panel Assembly ............................................................................................ 5-7
5-3. Rear Panel Assembly ............................................................................................. 5-11
6-1. Volt Specifications................................................................................................. 6-6
6-2. Edge Specifications................................................................................................ 6-7
6-3. Leveled Sine Wave Specifications......................................................................... 6-8
6-4. Time Marker Specifications................................................................................... 6-9
6-5. Wave Generator Specifications.............................................................................. 6-9
6-6. Pulse Generator Specifications............................................................................... 6-10
6-7. Trigger Signal Specifications (Pulse Function)...................................................... 6-10
6-8. Trigger Signal Specifications (Time Marker Function)......................................... 6-10
6-9. Trigger Signal Specifications (Edge Function)...................................................... 6-11
6-10. Trigger Signal Specifications (Square Wave Voltage Function)........................... 6-11
6-11. TV Trigger Signal Specifications........................................................................... 6-11
6-12. Oscilloscope Input Resistance Measurement Specifications ................................. 6-11
6-13. Oscilloscope Input Capacitance Measurement Specifications............................... 6-11
6-14. Overload Measurement Specifications................................................................... 6-12
6-15. SC600 Calibration and Verification Equipment .................................................... 6-15
6-16. Voltage HP3458A Settings .................................................................................... 6-19
6-17. Edge and Wave Generator HP3458A Settings....................................................... 6-20
6-18. Verification Methods for SC600 Functions ........................................................... 6-28
6-19. DC Voltage Verification at 1 MΩ.......................................................................... 6-30
6-20. DC Voltage Verification at 50 Ω........................................................................... 6-31
6-21. AC Voltage Verification at 1 MΩ.......................................................................... 6-32
6-22. AC Voltage Verification at 50 Ω........................................................................... 6-33
6-23. AC Voltage Frequency Verification....................................................................... 6-34
6-24. Edge Amplification Verification............................................................................ 6-35
6-25. Edge Frequency Verification ................................................................................. 6-36
6-26. Edge Rise Time Verification.................................................................................. 6-38
6-27. Edge Aberrations.................................................................................................... 6-39
6-28. Tunnel Diode Pulser Amplitude Verification ........................................................ 6-39
6-29. Leveled Sine Wave Amplitude Verification.......................................................... 6-40
6-30. Leveled Sine Wave Frequency Verification .......................................................... 6-41
6-31. Leveled Sine Wave Harmonics Verification.......................................................... 6-43
6-32. Low Frequency Flatness Verification at 5.5 V....................................................... 6-46
6-33. High Frequency Flatness Verification at 5.5 V...................................................... 6-47
6-34. Time Marker Verification ...................................................................................... 6-48
6-35. Wave Generator Verification at 1 MΩ................................................................... 6-51
6-36. Wave Generator Verification at 50 Ω.................................................................... 6-52
6-37. Pulse Width Verification........................................................................................ 6-53
6-38. Pulse Period Verification ....................................................................................... 6-54
6-39. MeasZ Resistance Verification .............................................................................. 6-55
6-40. MeasZ Capacitance Verification............................................................................ 6-56
6-41. SC300 Calibration and Verification Equipment .................................................... 6-74
6-42. AC Square Wave Voltage and Edge Settings for the HP3458A............................ 6-77
6-43. DC Voltage Verification at 1 MΩ.......................................................................... 6-84
6-44. DC Voltage Verification at 50 Ω........................................................................... 6-85
6-45. AC Voltage Verification at 1 MΩ.......................................................................... 6-87
6-46. AC Voltage Verification at 50 Ω........................................................................... 6-88
6-47. AC Voltage Frequency Verification....................................................................... 6-90
6-48. Edge Amplification Verification............................................................................ 6-91
6-49. Edge Frequency Verification ................................................................................. 6-91
6-50. Edge Rise Time Verification.................................................................................. 6-94
6-51. Edge Aberrations.................................................................................................... 6-95
6-52. Leveled Sine Wave Amplitude Verification.......................................................... 6-96

Contents (continued)
ix
6-53. Leveled Sine Wave Frequency Verification .......................................................... 6-97
6-54. Leveled Sine Wave Harmonics Verification.......................................................... 6-98
6-55. Low Frequency Flatness Verification at 5.5 V....................................................... 6-101
6-56. High Frequency Flatness Verification at 5.5 V...................................................... 6-102
6-57. Time Marker Specifications................................................................................... 6-103
6-58. Wave Generator Verification at 1 MΩ................................................................... 6-106
6-59. Wave Generator Verification at 50 Ω.................................................................... 6-107

5520A
Service Manual
x

xi
List of Figures
Figure Title Page
1-1. 5520A Multi-Product Calibrator............................................................................ 1-3
1-2. RS-232 Remote Connections................................................................................. 1-5
1-3. 5520A Calibrator Dimensional Outline ................................................................. 1-6
1-4. Allowable Duration of Current > 11 A .................................................................. 1-10
2-1. 5520A Internal Layout........................................................................................... 2-3
2-2. Synthesized Resistance Function ........................................................................... 2-4
2-3. Synthesized Capacitance Function......................................................................... 2-5
2-4. Current Function (AUX Out Ranges) .................................................................... 2-6
2-5. Voltage Function.................................................................................................... 2-7
3-1. Connections for Calibrating DC Volts up to 30 V................................................. 3-7
3-2. Connections for Calibrating DC Volts 30 V and Above........................................ 3-8
3-3. Connections for Calibrating AC Volts................................................................... 3-9
3-4. Connections for Calibrating Thermocouple Sourcing............................................ 3-11
3-5. Connections for Calibrating Thermocouple Measuring......................................... 3-11
3-6. Connections for Calibrating DC Current................................................................ 3-13
3-7. Connections for Calibrating AC Current with a Fluke A40 Shunt ........................ 3-14
3-8. Connections for Calibrating AC Current with a Fluke A40A Shunt...................... 3-17
3-9. Sample MET/CAL Program................................................................................... 3-18
3-10. Four-Wire Resistance Connection.......................................................................... 3-23
3-11. Scaling the DMM to a Fluke 742A........................................................................ 3-23
3-12. Two-Wire Resistance Connection.......................................................................... 3-24
3-13. Scaling the DMM to a Guildline 9334................................................................... 3-24
3-14. Connections for Calibrating Capacitance............................................................... 3-26
3-15. Normal Volts and AUX Volts Phase Verification ................................................. 3-26
3-16. Volts and Current Phase Verification..................................................................... 3-27
3-17. Connections for Verifying AC Current with a Metal Film Resistor
(3.2999 mA and Below)......................................................................................... 3-43
3-18. High Value Capacitance Measurement Set-up....................................................... 3-49
3-19. Example Visual Basic Program.............................................................................. 3-50
4-1. Exploded View of Rear Panel Assemblies............................................................. 4-5
4-2. Exploded View of Front Panel Assemblies............................................................ 4-6
5-1. Chassis Assembly................................................................................................... 5-5
5-2. Front Panel Assembly ............................................................................................ 5-9
5-3. Rear Panel Assembly ............................................................................................. 5-13
5-4. Wiring Diagram...................................................................................................... 5-14

5520A
Service Manual
xii
6-1. SC600 Block Diagram ........................................................................................... 6-14
6-2. Equipment Setup for SC600 Voltage Square Wave Measurements ...................... 6-19
6-3. Equipment Setup for SC600 Edge and Wave Gen Square Wave Measurements.. 6-20
6-4. Connecting the Calibrator Mainframe to the 5790A AC Measurement Standard . 6-24
6-5. MeasZ Function Calibration Setup ........................................................................ 6-27
6-6. AC Voltage Frequency Verification Setup ............................................................ 6-34
6-7. Edge Rise Time Verification Setup........................................................................ 6-37
6-8. Edge Rise Time...................................................................................................... 6-38
6-9. Leveled Sine Wave Harmonics Verification Setup................................................ 6-42
6-10. Connecting the Calibrator Mainframe to the 5790A AC Measurement Standard . 6-44
6-11. Connecting the HP 437B Power Meter to the HP 8482A or 8481D Power Sensor 6-45
6-12. Connecting the Calibrator Mainframe to the HP Power Meter and Power Sensor 6-45
6-13. Wave Generator Verification Setup....................................................................... 6-49
6-14. Overload Function Verification Setup ................................................................... 6-56
6-15. Adjusting the Leveled Sine Wave Balance............................................................ 6-58
6-16. Adjusting the Leveled Sine Wave Harmonics ....................................................... 6-59
6-17. Adjusting Short-Term Edge ................................................................................... 6-61
6-18. SC300 Block Diagram ........................................................................................... 6-73
6-19. Equipment Setup for SC300 Square Wave Measurements.................................... 6-78
6-20. Connecting the Calibrator Mainframe to the 5790A AC Measurement Standard . 6-81
6-21. Frequency Verification Setup................................................................................. 6-89
6-22. Edge Rise Time Verification Setup........................................................................ 6-93
6-23. Edge Rise Time...................................................................................................... 6-94
6-24. Leveled Sine Wave Harmonics Verification Setup................................................ 6-97
6-25. Connecting the Calibrator Mainframe to the 5790A AC Measurement Standard . 6-99
6-26. Connecting the HP 437B Power Meter to the HP 8482A or 8481D Power Sensor 6-100
6-27. Connecting the Calibrator Mainframe to the HP Power Meter and Power Sensor 6-100
6-28. Wave Generator Verification Setup....................................................................... 6-105
6-29. Adjusting the Leveled Sine Wave Harmonics ....................................................... 6-109
6-30. Adjusting Short-Term Edge ................................................................................... 6-110

1-1
Chapter 1
Introduction and Specifications
Title Page
1-1. Introduction........................................................................................... 1-3
1-2. Operation Overview.............................................................................. 1-4
1-3. Local Operation................................................................................ 1-4
1-4. Remote Operation (RS-232)............................................................. 1-4
1-5. Remote Operation (IEEE-488)......................................................... 1-4
1-6. Service Information .............................................................................. 1-5
1-7. How to Contact Fluke........................................................................... 1-5
1-8. Specifications........................................................................................ 1-6
1-9. General Specifications...................................................................... 1-7
1-10. DC Voltage Specifications............................................................... 1-8
1-11. DC Current Specifications................................................................ 1-9
1-12. Resistance Specifications ................................................................. 1-11
1-13. AC Voltage (Sine Wave) Specifications.......................................... 1-12
1-14. AC Current (Sine Wave) Specifications........................................... 1-14
1-15. Capacitance Specifications............................................................... 1-16
1-16. Temperature Calibration (Thermocouple) Specifications................ 1-17
1-17. Temperature Calibration (RTD) Specifications................................ 1-18
1-18. DC Power Specification Summary................................................... 1-19
1-19. AC Power (45 Hz to 65 Hz) Specification Summary, PF=1............ 1-19
1-20. Power and Dual Output Limit Specifications................................... 1-20
1-21. Phase Specifications......................................................................... 1-21
1-22. Calculating Power Uncertainty......................................................... 1-22
1-23. Additional Specifications...................................................................... 1-23
1-24. Frequency Specifications.................................................................. 1-23
1-25. Harmonics (2nd to 50th) Specifications........................................... 1-24
1-26. AC Voltage (Sine Wave) Extended Bandwidth Specifications........ 1-25
1-27. AC Voltage (Non-Sine Wave) Specifications.................................. 1-26
1-28. AC Voltage, DC Offset Specifications............................................. 1-27
1-29. AC Voltage, Square Wave Characteristics....................................... 1-28
1-30. AC Voltage, Triangle Wave Characteristics (typical)...................... 1-28
1-31. AC Current (Sine Wave) Extended Bandwidth Specifications........ 1-28
1-32. AC Current (Non-Sine Wave) Specifications .................................. 1-29
1-33. AC Current, Square Wave Characteristics (typical)......................... 1-31
1-34. AC Current, Triangle Wave Characteristics (typical) ...................... 1-31

5520A
Service Manual
1-2

Introduction and Specifications
Introduction
1
1-3
1-1. Introduction
The Fluke Model 5520A Multi-Product Calibrator (Figure 1-1) is a precise instrument
that calibrates a wide variety of electrical measuring instruments. With the 5520A
Calibrator, you can calibrate precision multimeters that measure ac or dc voltage, ac or dc
current, ac or dc power, resistance, capacitance, and temperature. The 5520A can display
pressure measurements when used with a Fluke 700 Series Pressure Module. With the
SC600 and SC300 Oscilloscope Calibration options, you can use the 5520A Calibrator to
calibrate analog and digital oscilloscopes. Specifications are provided in this chapter
(specifications for the oscilloscope calibration options are provided in Chapter 6).
XWWarning
If the 5520A Calibrator is operated in any way not specified by
this manual or other documentation provided by Fluke, the
protection provided by the Calibrator may be impaired.
0•
123
456
789
ENTER
M
k
mVHz
FIELD
EDIT
/
+
F
OPRSTBY EARTH SCOPE
EXGRD MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
¡F
µ
n
p
W
dBm sec
¡C
POWER
A
MULT
x
DIV
÷
MODES
MORE
5520A
CALIBRATOR
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX SCOPE
OUT
V, , ,RTD A, -SENSE, AUX V
20V PK MAX
20V PK MAX
yg030f.eps
Figure 1-1. 5520A Multi-Product Calibrator

5520A
Service Manual
1-4
1-2. Operation Overview
The 5520A Calibrator may be operated at the front panel in the local mode, or remotely
using RS-232 or IEEE-488 ports. For remote operations, several software options are
available to integrate 5520A operation into a wide variety of calibration requirements.
1-3. Local Operation
Typical local operations include front panel connections to the Unit Under Test (UUT),
and then manual keystroke entries at the front panel to place the calibrator in the desired
output mode. The front panel layout facilitates hand movements from left to right, and
multiply and divide keys make it easy to step up or down at the press of a single key. You
can also review 5520A Calibrator specifications at the push of two keys.
1-4. Remote Operation (RS-232)
There are two rear-panel serial data RS-232 ports: SERIAL 1 FROM HOST, and
SERIAL 2 TO UUT (Figure 1-2). Each port is dedicated to serial data communications
for operating and controlling the 5520A during calibration procedures. For complete
information on remote operation, see Chapter 5 of the 5520A Operators Manual.
The SERIAL 1 FROM HOST serial data port connects a host terminal or personal
computer to the 5520A. You have several choices for sending commands to the 5520A:
you can enter commands from a terminal (or a PC running a terminal program), you can
write your own programs using BASIC, or you can run optional Windows-based software
such as 5500/CAL or MET/CAL. The 5500/CAL software includes more than 200
example procedures covering a wide range of test tools the 5520A can calibrate.
The SERIAL 2 TO UUT serial data port connects a UUT to a PC or terminal via the
5520A (see Figure 1-3). This “pass-through” configuration eliminates the requirement for
two COM ports at the PC or terminal. A set of four commands control the operation of
the SERIAL 2 TO UUT serial port. See Chapter 6 of the 5520A Operators Manual for a
discussion of the UUT_* commands. The SERIAL 2 TO UUT port is also used to
connect to the Fluke 700 series pressure modules.
1-5. Remote Operation (IEEE-488)
The 5520A rear panel IEEE-488 port is a fully programmable parallel interface bus
meeting standard IEEE-488.1 and supplemental standard IEEE-488.2. Under the remote
control of an instrument controller, the 5520A Calibrator operates exclusively as a
“talker/listener.” You can write your own programs using the IEEE-488 command set or
run the optional Windows-based MET/CAL software. (See the 5520A Operators Manual
for a discussion of the general commands available for IEEE-488 operation, and
Chapter 3 of this manual for remote commands used for 5520A calibration.)