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Fluke 5720A Theory of Operation, Analog Section Detailed Circuit Description, ahp016f.eps

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Theory of Operation 2

Analog Section Detailed Circuit Description

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Figure 2-18. ADC Circuit Measurement Functions

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Fluke 5720A Theory of Operation, Analog Section Detailed Circuit Description, 18. ADC Circuit Measurement Functions

Contents

5700A/5720A Series Service ManualMulti-Function Calibrator 5/94 LIMITED WARRANTY & LIMITATION OF LIABILITYDeclaration of the Manufacturer or Importer Interference InformationBescheinigung des Herstellers/Importeurs Page HIGH VOLTAGE OPERATOR SAFETY SUMMARYLETHAL VOLTAGE Terms in this ManualPower Source Symbols Marked on EquipmentUse the Proper Power Cord Use the Proper FuseFOR QUALIFIED SERVICE PERSONNEL ONLY SERVICING SAFETY SUMMARYDo Not Service Alone Use Care When Servicing With Power OnFree the Victim From the Live Conductor FIRST AID FOR ELECTRIC SHOCKGet Help Never Accept Ordinary and General Tests for DeathIntroduction and Specifications Table of ContentsTitle PageTheory of Operation 5700A/5720A Series±PA Supplies Digital Control How the DAC is Used in Calibration 5700A/5720A SeriesOhms Cal Assembly A9 Calibration and VerificationCalibration Procedure Troubleshooting MaintenanceRear Panel Assembly Access Using Remote Commands Reserved for ServicingList of Replaceable Parts Schematic Diagrams5700A/5720A Series Service Manualviii Title List of TablesPage 5700A/5720A Series Unregulated Supplies from the Filter AssemblyTest Record for Flatness Check of the AC 2 mV Range A16A1 Power Amplifier Digital Control SIP PCAA11A2 DAC Buffered Reference SIP PCA A13A1 Oscillator Wideband SMD PCA5700A/5720A Series Service ManualTitle List of FiguresPage 5700A/5720A Series Ohms Main Assembly Simplified SchematicA16A1 Power Amplifier Digital Control SIP PCA Power Amplifier with Calibrator Set to 22V at 1 kHzA13A1 Oscillator Wideband SMD PCA A15 High Voltage/High Current PCA5700A/5720A Series Service ManualChapter Introduction and SpecificationsTitle 5700A/5720A Series II Calibrator Service Manual1-1. Introduction 1-2. Contacting Fluke 1-4. How to Use this Manual1-3. About this Manual 1-6. Wideband AC Voltage Module Option 5700A-03 1-5. Additional Instruction Manuals∙ 5700A/5720A Series II Getting Started Manual PN ∙ 5700A/5720A Series II Operator Reference Guide PN1-7. Auxiliary Amplifiers 1-9. Support Equipment and Services1-8. 5725A Amplifier 1-10. 732B Direct Voltage Reference Standard 1-11. 732B-200 Direct Volt Maintenance Program U.S.A. Only1-12. 742A Series Resistance Standards 1-13. Wideband AC Module Option 5700A-03 Calibration Support1-15. The Components of the 5700A/5720A Series II Calibrator 1-14. Service CentersCalibrating the 5700A/5720A Series II Calibrator 1-16. Calibrating the 5700A/5720A Series II Calibrator1-18. Establishing Traceability 1-17. The Calibration Process1-21. Developing a Performance History 1-20. Calibration Check1-19. Calibration Reports 1-25. Specification Confidence Levels 1-24. Specifications1-26. Using Absolute and Relative Uncertainty Specifications 1-22. Range CalibrationSpecifications 1-27. Using Secondary Performance SpecificationsService Manual 1-28. DC Voltage Specifications5700A/5720A Series II Calibrator 5720ADC Voltage Specifications Introduction and Specifications5700A 5700AOvershoot 5 % Common mode rejection 140 dB, DC to 400 Hz Service Manual5700A/5720A Series II Calibrator Introduction and Specifications 1-29. AC Voltage SpecificationsAC Voltage Specifications 5720A5700A/5720A Series II Calibrator Service Manual5720A 95 % Confidence LevelAC Voltage Specifications Introduction and Specifications± 5 C from calibration temperature 5700A5700A/5720A Series II Calibrator Service Manual5700A 95% Confidence LevelAC Voltage Specifications Introduction and Specifications± ppm output + μV 0-10 C and5700A/5720A Series II Calibrator Service Manual5725A Amplifier Figure 1-2. Volt-Hertz CapabilityIntroduction and Specifications 1-30. Resistance SpecificationsResistance Specifications 5720A5700A/5720A Series II Calibrator Service Manual5700A 5700AResistance Specifications Introduction and Specifications±1 C Note Characterized5700A/5720A Series II Calibrator Service ManualTable 1-13. Current Derating Factors I ILIntroduction and Specifications 1-31. DC Current SpecificationsDC Current Specifications 5720A 99%5700A/5720A Series II Calibrator Service Manual5700A 5700ADC Current Specifications Introduction and SpecificationsOvershoot 5 % Service Manual 1-32. AC Current Specifications5700A/5720A Series II Calibrator 5720A 99%AC Current Specifications Introduction and Specifications5720A 95% 95 % Confidence Level5700A/5720A Series II Calibrator Service Manual5700A 99 % Confidence LevelAC Current Specifications Introduction and Specifications5700A 95 % Confidence LevelTemperature Coefficient Note Service Manual5700A/5720A Series II Calibrator ± ppm output + nAIntroduction and Specifications 1-33. Wideband AC Voltage Option 5700-03 SpecificationsWideband AC Voltage Option 5700-03 Specifications Table 1-22. Wideband AC Voltage Option 5700-03 SpecificationsService Manual 1-34. General Specifications5700A/5720A Series II Calibrator Guard isolation 20Introduction and Specifications 1-35. Auxiliary Amplifier SpecificationsAuxiliary Amplifier Specifications 5220A AC Current, 180-day specifications5700A/5720A Series II Calibrator Service ManualChapter Theory of OperationTitle 2-36 Theory of Operation 2-155 2-2. Calibrator Overview 2-1. Introduction2-3. Internal References 2-4. Hybrid Reference Amplifiers2-8. Analog Section Overview 2-7. Digital Section Overview2-6. Digital-to-Analog Converter DAC Theory of Operation Figure 2-1. Digital Section Block DiagramAnalog Section Overview ahp003f.eps2-10. DC Voltage Functional Description 2-9. Functional Description Presented by Output FunctionTheory of Operation Figure 2-2. Analog Section Block Diagram, PartTheory of Operation ahp33f.epsFigure 2-3. Analog Section Block Diagram, Part Service Manual5700/5720A Series II Calibrator 2-11. AC Voltage Functional Description 2-13. DC Current Functional Description 2-12. Wideband AC V Functional Description Option2-14. AC Current Functional Description 2-16. System Interconnect Detailed Circuit Description 2-17. Digital Motherboard Assembly A42-15. Ohms Functional Description 2-19. Analog Motherboard Assembly A3 2-18. Transformer Assembly A22Functional Description Presented by 0utput Function Theory of OperationFigure 2-4. System Interconnections ahp35f.eps5700/5720A Series II Calibrator Service ManualFigure 2-4. System Interconnections cont Motherboard Connector Table 2-1. Analog Motherboard ConnectorsConnected to Assembly 2-22. Filter PA Supply Assembly A18 2-21. Rear Panel Assembly A212-24. Digital Power Supply Assembly A19 2-23. Digital Section Detailed Circuit Description2-26. ±12V Power Supplies 2-25. +5V Power Supply2-27. +35V Power Supply Digital Section Detailed Circuit Description2-29. +35V and +75V Shut-Down Circuit 2-28. +75V Power Supply2-31. Power-Up and Reset Circuit 2-30. CPU Central Processing Unit Assembly A202-32. Clock Generation 5700A/5720A Series II Calibrator Figure 2-5. CPU Assembly Block Diagramahp004f.eps Theory of Operation Signal NameDigital Section Detailed Circuit Description Table 2-3. CPU Acronym Glossary2-34. Address Decoding and DTACK Data Acknowledge 2-33. Watchdog TimerTable 2-4. CPU Memory Map Chip Select2-35. Interrupt Controller 2-37. RAM Random-Access Memory2-36. Glue Logic 2-38. ROM Read-Only Memory2-40. DUART Dual Universal Asynchronous Receiver/transmitter Circuit 2-39. Electrically-Erasable Programmable Read-Only Memory EEPROM2-41. Clock/Calendar Circuit 2-43. CPU to Rear Panel Interface 2-42. Clock Filter Circuit2-44. CPU to Front Panel Interface 2-45. Fan Monitor2-47. Clock Regeneration Circuitry 2-46. Front Panel Assembly A22-48. Refresh Failure Detect Circuitry 2-49. Decoding and Timing Circuitryêêêêêêê 2-50. Control Display Circuitry2-51. Output Display Circuitry 2-53. Knob Encoder Circuitry 2-52. Keyboard Scanner Circuitry2-54. Led Circuitry 2-55. Keyboard Assembly A12-57. Filter/PA Supply A18, Low-voltage Filter/Regulator Section 2-56. Analog Section Detailed Circuit Description2-59. Unregulated LH Supplies 2-58. Unregulated OSC Supplies2-60. Unregulated S Supplies 2-61. Triac Circuit2-64. FR2 Supplies 2-65. Filter/PA Supply A18, Power Amplifier Output Supply Section2-66. ±PA Supplies Digital Control 5700A/5720A Series II Calibrator Figure 2-6. Power Amplifier Output Supply Simplified Schematicahp005f.eps 2-68. +PA and -PA Supplies 2-67. ±250V and ±500V Supplies2-69. ±PA Supply Current Limit ∙ PA CT is the center tap2-71. Voltage Regulator Circuitry 2-70. Regulator/Guard Crossing Assembly A172-72. Regulated OSC Supplies 2-74. Regulated S Supplies 2-73. Regulated LH Supplies+15 OSC -15 OSC +5RLH +5LH -5LH +44S -44S +17S -17S 15S +30FR1 +30FR2 +15V +5.975V +5.1V +44.15V +17.000V -17.000V +30.96V +30.96V2-76. FR2 Supply 2-75. FR1 Supply2-77. Guarded Digital Control Circuitry 2-79. Inguard Memory Configuration2-78. Inguard CPU Memory Map 2-82. Power-Up and Reset Circuitry 2-81. Inguard Watchdog Timer2-80. Inguard Clock Circuit 2-83. Break Detection2-85. Interface to Guarded Digital Bus 2-87. Switch Matrix Assembly A82-86. Inguard CPU Interrupts 2-88. Switch Matrix Digital Control Theory of Operation Figure 2-7. Switch Matrix Assembly Simplified SchematicSystem Interconnection Detailed Circuit Description 3. Apply 7V to the relay coils by setting PC5 high 2-89. Switch Matrix Operation 11V DC and 22V DC RangesTheory of Operation Figure 2-8. Switch Matrix Configuration for 11V DC and 22V DC RangesAnalog Section Detailed Circuit Description ahp006f.eps2-91. Switch Matrix Operation 220V AC and DC Ranges 2-90. Switch Matrix Operation 2.2V AC and 22V AC RangesTheory of Operation Figure 2-9. Switch Matrix Configuration for 2.2V and 22V AC RangesAnalog Section Detailed Circuit Description ahp007f.eps5700A/5720A Series II Calibrator Figure 2-10. Switch Matrix Configuration for 220V DC and AC Rangesahp008f.eps 2-92. Switch Matrix Operation 2.2V DC Range 5700A/5720A Series II Calibrator Figure 2-11. Switch Matrix Configuration for 2.2V DC Rangeahp009f.eps 2-93. Calibration of the 2.2V Range 2-94. Switch Matrix Operation 220 mV DC RangeTo calibrate the offset Figure 2-12. Calibration of the 2.2V DC Range 5700A/5720A Series II Calibratorahp010f.eps Theory of Operation Figure 2-13. Switch Matrix Configuration for 220 mV DC RangeAnalog Section Detailed Circuit Description ahp011f.eps2-96. Switch Matrix Operation 2.2 mV and 22 mV AC Ranges 2-95. Switch Matrix Operation 220 mV AC Range2-97. Calibration of the mV Ranges Analog Section Detailed Circuit Description Theory of OperationFigure 2-14. V AC, 2.2 mV AC, and 22 mV AC Range ahp012f.epsFigure 2-15. Divider Calibration 5700A/5720A Series II Calibratorahp013f.eps 2-98. Internal CAL Zero Amplifier Figure 2-16. Divider Gain Calibration 5700A/5720A Series II Calibratorahp014f.eps 2-100. DAC Assembly A11 2-99. Switch Matrix 5725A Amplifier Interface2-101. Basic DAC Theory of Operation 0.1 x 13V + 0.5 x 0.78 mV = Theory of Operation Figure 2-17. DAC Assembly Simplified SchematicAnalog Section Detailed Circuit Description ahp015f.eps2-103. DAC Assembly Reference Circuitry 2-102. DAC Assembly Digital ControlProgrammable Peripheral Interface IC U31 is the heart of this circuit 2-104. Duty-Cycle Control Circuit 2-106. DAC Output Stage 2-105. DAC Filter CircuitREFCOM 2-108. Linearity Control Circuit 2-107. Sense Current Cancellation Circuit2-109. Negative Offset Circuit 2-110. DAC Output Switching2-111. DAC Buffered Reference Sip 2-113. ADC Amplifier 2-112. Calibration Hardware2-114. ADC Input Selection ∙ ADC reference voltage ∙ ADC dac ∙ ADC comparator/amplifier 2-115. ADC CircuitAnalog Section Detailed Circuit Description Theory of OperationFigure 2-18. ADC Circuit Measurement Functions ahp016f.eps2-116. How the DAC is Used in Calibration 2-117. DAC Assembly CalibrationINPUT 2-118. Oscillator Section Overview 2-119. Oscillator Control Assembly A122-122. Sense Current Cancellation 2-121. Oscillator Input Switching2-120. Oscillator Control Digital Control 2-123. Averaging Converter 2-124. Error Integrator2-125. Three-Pole Filter 2-126. Analog Amplitude Control LoopFigure 2-19. Oscillator Control Analog Control Loop 5700A/5720A Series II Calibratorahp017f.eps 2-127. AC/DC Thermal Transfer Circuit Figure 2-20. AC/DC Thermal Transfer Circuit 5700A/5720A Series II Calibratorahp018f.eps 2-128. Oscillator Calibration 2-129. AC/DC Frequency Response Characterization 2-130. Oscillator Output Assembly A13Analog Section Detailed Circuit Description Theory of OperationFigure 2-21. Quadrature RC Oscillator Circuit ahp019f.eps2-132. Quadrature RC Oscillator 2-131. Oscillator Output Digital Control2-133. Oscillator Amplitude Control 2-134. Phase−locked Loop2-135. 2.2V and 22V Range Output Amplifier 2-136. Oscillator Wideband Smd Assembly A13A12-139. Power Amplifier Assembly A16 2-138. Phase Shifter2-137. Output Stage 1. Write the proper data for these relays to port A of the 82C55 U11 2-140. Power Amplifier Digital Control Sip Assembly A16A12-142. +PA and -PA Supplies 2-141. PA Common Circuitry2-143. PA Input Stage ∙ ±185V ∙ ±365V2-145. PA Output Stage 2-144. PA Mid Stage2-147. PA in Standby 2-146. PA Sense Current Cancellation Circuitry2-148. PA Operation 220V DC Range 5700A/5720A Series II Calibrator Figure 2-22. Power Amplifier Simplified Schematicahp020f.eps 2-149. PA Operation 220V AC Range 2-150. High Voltage Assembly Support Mode2-151. High Voltage AC 1100V Range 2-152. High Voltage DC 1100V Range and Current 2.2A Range2-154. PA Calibration 2-153. 220V DC Internal Calibration NetworkTheory of Operation Figure 2-23. Power Amplifier DC Calibration NetworkAnalog Section Detailed Circuit Description ahp021f.epsPower Amplifier dc gain of approximately -20 is calibrated next. The Power Amplifier is configured as in the 220V dc operation, except the input is connected to the DAC’s 6.5V reference BRF6 and BSRF6 by U2C and U2D respectively. The resulting -130V at the Power Amplifier output is connected to the 175 kΩ end of the internal cal resistor network by relay K3. The 25 kΩ end of this network is connected to DAC OUT HI and DAC SENSE HI by relay K1. The output of the internal cal amplifier is connected to the DAC’s adc circuit as in the previous steps, and the DAC OUTPUT is adjusted until checkpoint is measured by the adc circuit. Since the exact attenuation of the resistor networks is already known, the exact Power Amplifier output voltage can be calculated. This in turn gives the exact Power Amplifier dc gain, since the exact value of 6.5V reference BSRF6 is known Theory of Operation Figure 2-24. Power Amplifier Calibration AC AttenuatorAnalog Section Detailed Circuit Description f2-24.eps2-156. 1100V AC Range 2-155. High Voltage Assemblies A14 and A15Theory of Operation Figure 2-25. High Voltage/High Current Assembly 1100V AC RangeAnalog Section Detailed Circuit Description ahp022f.eps2-157. 1100V DC Range 2-158. HVDC Power Supply Filter Circuit2-159. HV DC Output Series Pass and Current Limit Circuit Theory of Operation Figure 2-26. High Voltage/High Current Assembly 1100V DC RangeAnalog Section Detailed Circuit Description ahp023f.eps2-161. 2.2A Range 2-160. DC HV Amplifier/AC Sense BufferTheory of Operation Figure 2-27. High Voltage/High Current Assembly 2.2A AC and DC RangesAnalog Section Detailed Circuit Description ahp024f.eps2-162. 2.2A Power Supply Filter Circuit 2-163. High Voltage Digital Control 2-165. Calibration of the AC Function 2-164. High Voltage CalibrationTheory of Operation Figure 2-28. High Voltage/High Current Assembly CalibrationAnalog Section Detailed Circuit Description ahp025f.eps2-167. High Voltage Magnitude Control 2-166. Calibration of the Current FunctionAnalog Section Detailed Circuit Description Theory of Operationahp026f.eps 2-168. Ohms Overview 2-170. Selection of Resistance Values 2-169. Ohms Main Assembly A10Figure 2-30. Ohms Assemblies Simplified Schematic Service Manual5700/5720A Series II Calibrator ahp38f.epsTheory of Operation Figure 2-31. Ohms Main Assembly Simplified SchematicAnalog Selection Detailed Circuit Description ahp39f.eps2-173. Ohms Cal Assembly A9 2-171. Ohms Main Assembly Support of Current Function Calibration2-172. Ohms Digital Control 2-174. Ohms CAL Digital Control2-175. 1, 1.9, and Short Resistance 2-176. Two-Wire Ohmmeter Compensation Circuit5700A/5720A Series II Calibrator Figure 2-32. Two-Wire Lead Drop Compensation Circuitahp027f.eps 2-178. High Side Cancellation 2-177. Two-Wire Compensation Power Supplies2-179. Low Side Cancellation 2-180. Ohms CalibrationFigure 2-33. Calibration to an External 10 kΩ Standard 5700A/5720A Series II Calibratorahp028f.eps 2-181. Calibrating to the External 10 KW Standard 2-183. Calibrating 100 KW 2-182. Calibrating 10 KW and 19 KW2-184. Completion of High Resistance Value Calibration The 10Ω, 19Ω, 100Ω and 190Ω resistance values are determined using 2V from the 2/5/10V source and using internal 101 divider Z5 in conjunction with the DAC. To get 2V, Q2 and Q3 are both turned on, which parallels both the 11.535 kΩ value and the 3.846 kΩ value with the 50 kΩ value. The lower voltage is required to lower the power dissipation in the resistors Figure 2-34. Ratio Calibration, 10 Ω From 100 Ω 5700A/5720A Series II Calibratorahp029f.eps 2-185. Calibrating to the External 1W Standard 2-186. Current/High Resolution Oscillator Assembly Overview A72-187. Current Section 2-188. Current Input SwitchingTheory of Operation Figure 2-35. Current Output Simplified SchematicAnalog Section Detailed Circuit Description ahp030f.eps2-190. Transconductance Amplifiers 2-189. Complementary Drive Circuit2-191. Shunt Resistors 2-192. Feedback Loop 2-193. Current Output Switching2-194. Generation of the 2.2A Range Table 2-15. Relay Settings for Current Range Selection Range2-195. Current Guard Buffer 2-198. Current Assembly Calibration2-196. Compliance Limiter 2-197. Current/Compliance Voltage MonitorTheory of Operation Figure 2-36. Current Assembly CalibrationAnalog Section Detailed Circuit Description ahp031f.eps∙ 10.00 Hz to 119.99 Hz ∙ 0.1200 kHz to 1.1999 kHz 2-199. High-Resolution Oscillator Section2-200. Reference Frequency Amp/Divider 2-201. Phase-Locked Loop2-204. Rear Panel Assembly A21 2-203. Hi-Res Output Switching2-202. 5-500k Output Divider 2-206. Rear Panel Address Mapping 2-205. Rear Panel Power Supplies∙ RPDUARTCS*, D00000-D0001F ∙ RPIEEECS*, D00020-D0002F 2-208. IEEE-488 GPIB Interface 2-207. Clock Regeneration Circuit2-209. RS-232C Interface 2-210. Auxiliary Amplifier Interface 2-212. Phase Lock In/Variable Phase out2-211. 5725A Interface 2-214. Rear Panel CPU Interface 2-213. Rear Panel Relay ControlPort A PA0-PA7 provides the input lines for relay driver U16 2-217. Wideband Oscillator Power Supplies 2-216. Wideband Oscillator Assembly A62-215. Wideband AC Module Option 2-218. Wideband Oscillator Digital Control2-219. Phase-Locked Loop and Divider Circuit 2-221. Wideband Oscillator Filters 2-220. Amplitude Control Amplifier and X10 Wideband AmplifierFigure 2-37 is a simplified schematic for the Wideband Output assembly 2-222. Wideband Output Assembly A5Theory of Operation Figure 2-37. Wideband Output Assembly Simplified SchematicAnalog Section Detailed Circuit Description ahp032f.eps2-223. Wideband Output Power Amplifier Circuit 2-225. Wideband Output RMS Sensor and Amplitude Control Circuit 2-224. Wideband Output Attenuators2-226. Wideband Output Overload Control Circuit 2-228. Wideband Output Calibration 2-227. Wideband Output Digital Controlconnector is connected back to the OUTPUT HI SENSE and OUTPUT LO SENSE binding posts 5700A/5720A Series II Calibrator Service ManualChapter Calibration and VerificationTitle 3-30 Calibration and Verification 3-1. Introduction3-2. Accessing the Fuse Cleaning the Air Filter 3-3. Cleaning the Air Filter3-5. Calibration 3-4. Cleaning the Exterior3-6. Calibrating the 5700A/5720A Series II to External Standards 3-7. Calibration Requirements 3-8. When to Adjust the Calibrator’s Uncertainty SpecificationsCalibrating the 5700A/5720A Series II to External Standards 3-9. Calibration Procedure 5. Connect the 732B to the calibrator as shown in Figure 4. Enter the ambient temperature then press E. The display showsCalibration and Verification Calibrating the 5700A/5720A Series II to External StandardsIF3-6.EPS IF3-5.EPSIF3-7.EPS After a few seconds, the following display appears CALIBRATOR RESISTANCE STANDARDFigure 3-4. 742A-1 and 742A-10k External Calibration Connections F7-4.EPS16. Set the rear panel CALIBRATION switch to NORMAL 3-10. Range Calibration 4. Press the “DC V” softkey to bring up the next menu shown below IF057.EPS PREV MENUCalibrating the Wideband AC Module Option 5700A-03 3-11. Calibrating the Wideband AC Module Option 5700A-032. Press the “Cal “ softkey to bring up the following menu 4. Press the “Gain” softkey to bring up the following display 3-12. Performing a Calibration Check Press Pto exit the calibration menus Figure 3-7. Overview of Verification Tests 3-13. Full Verification3-14. Required Equipment for All Tests 3-15. Warm-up Procedure for All Verification TestsTable 3-2. List of Required Equipment for Main Output 5700A/5720A Series II CalibratorEquipment Description3-16. Resistance Verification Test 13. The low-value 1Ω, 1.9Ω, and 10Ω tests are summarized in Table 3-17. Two-Wire Compensation Verification 3-18. DC Voltage Verification Test 3-19. DC Voltage One-Tenth Scale Linearity Test 3-20. Direct Current Accuracy Verification Test 3-22. Output Level Tests For AC V Ranges 3-21. AC Voltage Frequency Accuracy TestUse Table 3-23 5720A or Table 3-24 5700A for the test records Table 3-8. 5790A Adjustment Counts 3-23. AC Current Test, 22 mA to 11A Ranges5790A Adjustment Counts Calibration and Verification1. Connect the equipment as shown in Figure 3-12A use the 2A shunt A. Alternating Current Test Setup, 22 mA to 2A Using 5790A Input Figure 3-12. Alternating Current Test SetupB. Alternating Current Test Setup, 10A Using 5790A Input Calibration and VerificationHi Output Lo 3-24. AC Current Test, 2 mA and 200 μA RangesMetal Film Resistor Mounted on Dual Banana Plug 200 Pomona Cable 1362-A-18Figure 3-14. Metal Film Resistor Equivalent Circuit 3-25. Rationale for Using Metal-Film Resistors to Measure AC CurrentFigure 3-15. Metal Film Resistor in Test Circuit 3-27. Wideband AC Voltage Module Output Verification 3-26. Wideband Frequency Accuracy TestWideband Output Accuracy at 1 kHz Test 3-28. Wideband Output Accuracy at 1 kHz Test3-29. Wideband Output Flatness Test 3-30. Wideband Flatness Calibration Procedure 3-32. DC Voltage Load Regulation Test 3-31. Optional Tests3-34. DC Voltage Output Noise 10 Hz to 10 kHz Test 3-33. DC Voltage Linearity TestOptional Tests 2. Set the Oscilloscope Differential Amplifier controls as shown below 3-35. DC Voltage Output Noise 0.1 to 10 Hz Test 3-37. Wideband Distortion Testing3-36. AC Voltage Distortion Test WWarning3-38. AC Voltage Overshoot Test 3-39. Minimum Use RequirementsCalibration and Verification Minimum Use SpecificationsMinimum Use Requirements Table 3-15. Minimum Use Requirements3-40. Determining Test Limits for Other Calibration Intervals 130 + 1000000*0.000000040/0.002=130 ppm + 20 ppm = 150 ppm 1Ω Std Res Value DMM Error1Ω Std Voltage Measured 1Ω Std VoltageTable 3-16. 5720A Resistance Test Record cont DMM ErrorStd Res Value DMM Std Res RdgTable 3-17. 5700A Resistance Test Record DMM Error1Ω Std Res Value 1Ω Std VoltageTable 3-17. 5700A Resistance Test Record cont Max DMM ErrorStd Res Value DMM Std Res Rdg5700A/5720A Series II Calibrator Divider SettingTable 3-18. DC Voltage Test Record for 5720A 5720A RangeCalibration and Verification Divider SettingDetermining Test Limits for Other Calibration Intervals Table 3-19. DC Voltage Test Record for 5700ASetting UUT ErrorError A+B 5700A/5720A Series II CalibratorError A+B UUT ErrorSetting Calibration and Verification5700A/5720A Series II Calibrator Error Display ReadingTable 3-23. 5720A AC Voltage Output Test Record OutputCalibration and Verification ErrorDetermining Test Limits for Other Calibration Intervals Output Level5700A/5720A Series II Calibrator Error Display ReadingTable 3-24. 5700A AC Voltage Output Test Record OutputError Display Reading ErrorCalibration and Verification Determining Test Limits for Other Calibration IntervalsCalculated Error UUT Error Display5700A/5720A Series II Calibrator Table 3-26. 5720A AC Current 20 mA to 10A Accuracy Test RecordCalculated Error UUT Error DisplayCalibration and Verification Determining Test Limits for Other Calibration IntervalsError Error5700A/5720A Series II Calibrator Table 3-28. 5720A AC Current 2 mA and 200 μA Accuracy Test RecordDetermining Test Limits for Other Calibration Intervals Calibration and VerificationTable 3-30. Wideband Frequency Accuracy Test Record Frequency HzMeasured Flatness Error Measured Error5700A/5720A Series II Calibrator Table 3-31. Wideband Accuracy at 1 kHz Test RecordCalibration and Verification Measured Flatness ErrorDetermining Test Limits for Other Calibration Intervals Table 3-32. Wideband Flatness Test Record cont1 kHz Absolute Error ppm Table 3-33. Wideband Absolute Error 10 Hz to 500 kHzFlatness Error ppm Error Sum ppmKelvin-Varley Setting Div. SettingCalibration and Verification Determining Test Limits for Other Calibration Intervals5700A/5720A Series II Calibrator UUT Error Display ReadingTable 3-37. AC V Distortion Test Summary 5700A/5720A Series II Outputstatic awareness A Message FromFluke Corporation 5. USE STATIC SHIELDING CONTAINERS FOR HANDLING AND TRANSPORT Chapter MaintenanceTitle 5700A/5720A Series II Calibrator Service Manual4-1. Introduction 4-2. Cleaning the Air Filter4-4. Cleaning PCA’s 4-3. General Cleaning4-5. Access Procedures 4-9. Rear Panel Removal and Installation4-10. Rear Panel Assembly Access 4-12. Display Assembly Removal and Installation 4-11. Front Panel Removal and Installation4-14. Analog Assembly Removal and Installation 4-13. Keyboard Assembly Removal and InstallationFigure 4-5. Analog and Digital Assemblies 5700A/5720A Series II CalibratorFRONT PANEL 4-15. Digital Assembly Removal and Installation 4-18. Front/Rear Binding Post Reconfiguration4-16. Power Transformer Removal and Installation 4-17. Hybrid Cover Removal6. Install the Front Panel 4-21. Replacing the Clock/Calendar Backup Battery 4-19. Installing a Wideband AC Module Option4-20. Clearing Ghost Images from the Control Display 4-23. Using the ETIME Command 4-22. Using Remote Commands Reserved for ServicingUsing The Fatality? and Fatalclr Commands ETIMEFATLCLR? FATALITY?Response Description5700A/5720A Series II Calibrator Service ManualChapter TroubleshootingTitle 5700A/5720A Series II Calibrator Service Manual2701 A7 8255 Port a Fault 5-2. Interpreting Diagnostic Fault Codes2702 A7 8255 Port B Fault 2703 A7 8255 Port C Fault2706 A7 Current Compliance Fault 2705 A7 Oven Regulation Fault2707 A7 Hardware Initialization Fault 2709 A7 Current Magnitude Fault2719 A7 8255 Was Reset 2718 Fault In Setting Up AC For Diagnostics2713 A7 Hi-Res Loop In 100Hz Range 2714 A7 Hi-res Loop In 1kHz Range2802 A11 8255 Port B Data Bus 2801 A11 8255 Port a Wires2803 A11 8254 Status Words 2804 A11 DAC Heaters Not Regulated2809 A11 DAC Monitoring Fault 2808 A11 ADC Amp Gain Error2810 A11 +11V DC Range Fault 2811 A11 -11V DC Range Fault2816 A11 13V Buffered Reference Fault 2815 A11 6.5V Reference Fault2817 A11 13V Reference Fault 2818 Assembly A11 Missing2826 A11 A/D Overload Fault 2822 A8/A11 -11/22V DC Zero Estimate Fault3101 A14 8255 Port a Fault 3102 A14 8255 Port B Fault3104 A15 HV Oven Regulation Fault 3103 A14 8255 Port C Fault3105 A15 HV I Oven Regulation Fault 3106 A15 DC HV Amp Noise Fault3110 A15 HV +DC Series Pass & Current Fault 3109 A15 HV +DC Preamplifier Fault3111 A15 HV +DC High Voltage Output Fault 3112 A15 HV +DC Ref/error Amplitude Fault3117 A14/A15 HV +DC Current Error Amp Fault 3116 A15 HV -DC Reference/error Amp Fault3118 A14/A15 HV -DC Current Error Amp Fault 3119 A14/A15 HV +DC Current Abs. Value3122 A14/A15 HV AC 1kHz, Preamp Lo 3126 A14/A15 HV AC 100Hz, Preamp Fault3123 A14/A15 HV AC 1kHz, Preamp Mid 3124 A14/A15 HV AC 1kHz, Preamp Hi3129 A14/A15 HV AC 1kHz, Output Mid 3128 A14/A15 HV AC 1kHz, Output Lo3130 A14/A15 HV AC 1kHz, Output Hi 3131 A14/A15 HV AC 100Hz, Output Lo3136 A14 8255 Was Reset 3135 Assembly A14 Not Responding3137 A14/A15/A16 2.2A AC Range Mag. Fault 3134 Spare3302 A9 8255 Port B Fault 3301 A9 8255 Port a Fault3140 A14/A15/A16 2.2A AC Range Abs. Value 3141 A14/A15/A16 2.2A DC Range Dummy Load3304 A9 10V Source Fault 3303 A9 8255 Port C Fault3305 A9 5V Source Fault 3306 A9 2V Source Fault3310 A9 Diff Amp Noise Fault 3309 A9 Diff Amp Gain Fault3311 A9/A10 Ohms 101 Divider Fault 3312 A9/A10 Ohms 11 Divider Fault3316 A9/A10 19 Ohm Cal Diag Fault 3315 A9/A10 10 Ohm Cal Diag Fault3317 A9/A10 100 Kilohm Ratio Fault 3318 A9/A10 190 Kilohm Ratio Fault3324 A9/A10 100M Ohm Ratio Fault 3321 A9/A10 10M Ohm Ratio Fault3325 A9/A10 10 Kilohm Check Fault 3326 A9/A10 19 Kilohm Check Fault3328 A9/A10 1.9 Kilohm Check Fault 3327 A9/A10 1 Kilohm Check Fault3329 A9/A10 100 Ohm Check Fault 3330 A9/A10 190 Ohm Check Fault3335 A9/A10 Ohms Short Check Fault 3334 A9/A10 1.9 Ohm Check Fault3336 A9/A10 2 Wire Compensation Fault 3337 A9/A10 Ohms Correction Factor Fault3400 A12 8255 Control Word 3341 A9/A10 190 Ohm Cal Diag Fault3401 A12 8255 Port A 3402 A12 8255 Port B3409 A13 Phase Lock Loop Fault 3408 A13 Fixed Ampl. Osc Fault3410 A12/A13 22V Amp Bias Adj Error 3412 A12 To A13 Interface Fault3417 A12 DC Sensor Buffer Fault 3416 A12/A13 DAC 15th Bit Fault3418 A12 Sensor Loop/SQ. Root Amp Fault 3414 A12/A13 Nonlinear Control Loop 2vrng3424 Assembly A13 Missing 3423 Assembly A12 Missing3425 Assembly A12 Or A13 Not Responding 3426 A12 8255 Was Reset3510 A16 220V Amp Fault 3508 A16/A14 220V AC Range Output Fault3503 A16 8255 Port C 3504 Spare3511 A16 Incorrect PA Input 3520 A16 PA Oven Regulation Fault3512 Spare 3513 Spare3524 A16 Power Amp Is Too Hot 3521 Assembly A16 Is Not Responding3525 220V DC Initialization Fault 3526 220V AC Initialization Fault3600 +17S Supply Fault 3530 A16 8255 Was Reset3601 -17S Supply Fault 3602 +15S Supply Fault3606 LH Com Ground Fault 3605 -42S Supply Fault3607 -5lH Supply Fault 3608 +5rLH Supply Fault3612 +15 OSC Supply Fault 3611 -PA Supply Fault3613 -15 OSC Supply Fault 3614 OSC Com Ground Fault3701 A21 8255 Port A Fault 3615 S Com Ground Fault3702 A21 8255 Port B Fault 3703 A21 8255 Port C Fault3802 A8 8255 Port B Fault 3801 A8 8255 Port A Fault3803 A8 8255 Port C Fault 3804 A8 Zero Amp Lo Noise Fault3810 A8 2.2V Amp Noise Fault 3811 A8 Zero Amp Offset 3809 A8 Zero Amp Hi Gain Fault3812 A8 2.2V Gain Fault 3813 A8 220mV Offset Fault 3814 A8 220mV Divider Fault 3815 A8 22mV Divider Fault 3816 Spare3825 Assembly A8 Not Responding 3824 A8 Oven Regulation Fault3826 A8 8255 Was Reset 3827 Assembly A8 Too Hot 3900 A5 8255 Control Word3906 A6 Phase Lock Loop At 30MHz 3905 A6 Phase Lock Loop At 10MHz3907 A5 Rms Sensor At 10MHz 3908 A5 Rms Sensor At 30MHz3915 A5 10DB Output Attenuation Fault 3914 A5 0DB Output Attenuation Fault3911 A5/A6 Ampl. Control At 30MHz 3912 A5/A6 Output Offset At 10MHz3917 A5 30DB Output Attenuation Fault 3916 A5 20DB Output Attenuation Fault3918 A5 40DB Output Attenuation Fault 3922 A5/A6 Wideband Initialization Fault3923 A5 8255 Was Reset 5-3. Component-level Troubleshooting5-4. Troubleshooting the Wideband Output Assembly A5 Component-level Troubleshooting All measurements are referenced to SCOM TP16 or TP17 and all 5-5. Troubleshooting the Wideband Oscillator Assembly A6F5-2.EPS Figure 5-2. Waveform at TP1F5-3.EPS Figure 5-3. Waveform at TP15F5-4.EPS Figure 5-4. Waveform at Pins 14 and 15 of U1F5-5.EPS 10 ms5-7. Current Section 5-6. Troubleshooting the Current/Hi-Res Assembly A7F5-6.EPS Figure 5-6. Waveform at Pin 11 of K21.2 Ω Figure 5-7. Waveform at Pin 6 of K2K5C, K5D K10, K13F5-10.EPS F5-9.EPSF5-11.EPS All measurements are referenced to LHCOM TP18 5-8. Hi-Res Oscillator SectionF5-13.EPS Figure 5-13. Waveform at TP125-9. Troubleshooting the Switch Matrix Assembly A8 F5-15.EPS Figure 5-15. Waveform at TP165-11. Two-wire Compensation Circuit 5-10. Troubleshooting the Ohms Cal Assembly A95-12. Troubleshooting the Ohms Main Assembly A10 5-13. Troubleshooting the DAC Assembly A11 Component-level Troubleshooting TroubleshootingFigure 5-17. Waveform at TP6 Figure 5-18. Waveform at TP4, Calibrator Set toFigure 5-19. Waveform at TP4, Calibrator Set to 5700A/5720A Series II CalibratorF5-19.EPS F5-20.EPS Figure 5-20. Waveform at TP7F5-21.EPS Figure 5-21. Waveform at TP55-14. Duty-cycle Control Circuit F5-22.EPS Figure 5-22. Waveform at Pin 10 of U6Component-level Troubleshooting TroubleshootingFigure 5-23. Waveform at Pin 6 of U13 Figure 5-24. Waveform at Pin 4 of U10U11, Q30, Q31, Q32, and their associated components 5-15. ADC Circuit 5-16. Buffered Reference SIP Assembly A11A2 5-17. Troubleshooting the Oscillator Control Assembly A12 Figure 5-27. Waveform at Anode of CR4 5700A/5720A Series II CalibratorFigure 5-28. Waveform at Pin 6 of U11 F5-27.EPSF5-29.EPS Figure 5-29. DC Sense Buffer Waveform TP65-18. Troubleshooting the Oscillator Output Assembly A13 ∙ TP5 positive voltage ∙ TP4 negative voltage ∙ TP3 positive voltage 5-19. Troubleshooting the High Voltage Control Assembly A14 F5-31.EPS Figure 5-31. Waveform at TP35-20. Magnitude Control Circuit 5-21. Troubleshooting the High Voltage/High Current Assembly A15 operation refer to Figure 2-25 in the Theory of Operation section. During normal operation in the 1100V ac mode, internal software monitors the output and makes corrections or trips the instrument into standby. This internal monitoring can cause difficulty when troubleshooting a faulty High Voltage assembly. If during the next step 8 the instrument keeps tripping into standby, defeat the monitoring by connecting a jumper from TP9 to TP10 on the DAC assembly Figure 5-32. Waveform at Pin 18 of Hybrid H4 5-22. Troubleshooting the Power Amplifier Assembly A16Figure 5-33. Power Amplifier with Calibrator Set to 22V at 1 kHz Remove any jumpers left in place from step 8 before continuing AC elsewhere in the Calibrator5-23. Troubleshooting the Filter/PA Supply Assembly A18 J201. The +PA supply at +180Vshould go into current limit. The oscilloscope should show a repeating pattern in which the +PA supply climbs to about +180V then drops to 0V. If a failure is detected, check Q203, VR246, VR213, U201C, and associated components 5700A/5720A Series II Calibrator Service ManualChapter List of Replaceable Parts5700A/5720A Series II Calibrator Service ManualA * symbol indicates a device that may be damaged by static discharge 6-2. How to Obtain Parts6-1. Introduction 6-3. Manual Status InformationManual Status Information Assembly Name 6-5. Service Centers5700A/5720A Series II Calibrator Ref or Option NoTable 6-1. Front Panel Final Assembly Service CentersList of Replaceable Parts Reference Description Designator5700A/5720A Series II Calibrator Figure 6-1. Front Panel Final Assembly5700A-T&B f6-1.epsTable 6-1. Chassis Final Assembly Service CentersList of Replaceable Parts 5700A/5720A Series II Calibrator Figure 6-2. Chassis Final Assembly5700A T&B 1 ofFigure 6-2. Chassis Final Assembly cont Service CentersList of Replaceable Parts f61a2.eps5700A/5720A Series II Calibrator Table 6-1. Rear Panel Final AssemblyFigure 6-3. Rear Panel Final Assembly Service CentersList of Replaceable Parts f61b.eps5700A/5720A Series II Calibrator ISOLATOR,OPTO,OPTICAL SWITCH,INFRAREDTable 6-2. A1 Keyboard PCA CR1-4 DT1, DT2 W1List of Replaceable Parts Service Centers5700A-1603 Figure 6-4. A1 Keyboard PCATable 6-3. A2 Front Panel PCA 5700A/5720A Series II CalibratorDesignator List of Replaceable Parts Service CentersTable 6-3. A2 Front Panel PCA cont 5700A-1602 5700A/5720A Series II CalibratorFigure 6-5. A2 Front Panel PCA 57001602.EPSList of Replaceable Parts Service CentersTable 6-4. A3 Analog Motherboard PCA 5700A-1601 5700A/5720A Series II CalibratorFigure 6-6. A3 Analog Motherboard PCA List of Replaceable Parts Service CentersTable 6-5. A4 Digital Motherboard PCA 5700A-1605 5700A/5720A Series II CalibratorFigure 6-7. A4 Digital Motherboard PCA 57001605.EPSList of Replaceable Parts Service CentersTable 6-6. A5 Wideband Output PCA, Option DesignatorTable 6-6. A5 Wideband Output PCA, Option -03 cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-6. A5 Wideband Output PCA, Option -03 cont R69,R70 R72,R73,R80-83 R74 R75 R78,R79,R86-89 R92-95 R96-99 R100 R1015700A-1611 5700A/5720A Series II CalibratorFigure 6-8. A5 Wideband Output PCA, Option 57001611.EPSList of Replaceable Parts Service CentersTable 6-7. A6 Wideband Ocillator PCA, Option 5700A/5720A Series II Calibrator CONNECTOR ,CONN,DIN41612,TYPE C,RT ANG,64 PINTable 6-7. A6 Wideband Ocillator PCA, Option -03 cont DesignatorList of Replaceable Parts Service CentersTable 6-7. A6 Wideband Ocillator PCA, Option -03 cont R58,R112,R212 R312,R412,R512 R59 R61 R62,R64,R65,R69 R63 R68 R715700A-1610 5700A/5720A Series II CalibratorFigure 6-9. A6 Wideband Oscillator PCA, Option 57001610.EPSList of Replaceable Parts Service CentersTable 6-8. A7 Current/High-Res Oscillator PCA Table 6-8. A7 Current/High-Res Oscillator PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-8. A7 Current/High-Res Oscillator PCA cont Designator5700A-1621 5700A/5720A Series II CalibratorFigure 6-10. A7 Current/HIgh-Res Oscillator PCA 57001621.EPSTable 6-9. A8 Switch Matrix PCA Service CentersList of Replaceable Parts Reference Designator5700A/5720A Series II Calibrator Table 6-9. A8 Switch Matrix PCA contFigure 6-11. A8 Switch Matrix PCA Service CentersList of Replaceable Parts 5700A-1622Table 6-10. A9 Ohms Cal PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-10. A9 Ohms Cal PCA cont 5700A-1631 5700A/5720A Series II CalibratorFigure 6-12. A9 Ohms Cal PCA 57001631.EPSList of Replaceable Parts Service CentersTable 6-11. A10 Ohms Main PCA 5700A-1630 5700A/5720A Series II CalibratorFigure 6-13. A10 Ohms Main PCA 57001630.EPSList of Replaceable Parts Service CentersTable 6-12. A11 DAC PCA C110,C111 CR1,CR3-6,CR8, CR12,CR13 CR2Table 6-12. A11 DAC PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-12. A11 DAC PCA cont Table 6-12. A11 DAC PCA cont 5700A/5720A Series II CalibratorVR13 VR18,VR22 VR25 VR26 VR27 VR28 VR29 VR33,VR34 X1 Z2 Z4 Z5 Z8 Z10 List of Replaceable Parts Service Centers5700A-1640 Figure 6-14. A11 DAC PCATable 6-13. A11A1 DAC Filter SIP PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service Centers5700A-1643 Figure 6-15. A11A1 DAC Filter SIP PCATable 6-14. A11A2 DAC Buffered Reference SIP PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service Centers5700A-1644 Figure 6-16. A11A2 DAC Buffered Reference SIP PCATable 6-15. A12 Oscillator Control PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-15. A12 Oscillator Control PCA cont StockTable 6-15. A12 Oscillator Control PCA cont 5700A/5720A Series II CalibratorDesignator List of Replaceable Parts Service Centers5700A-1650 Figure 6-17. A12 Oscillator Control PCATable 6-16. A13 Oscillator Output PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-16. A13 Oscillator Output PCA cont Table 6-16. A13 Oscillator Output PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service Centers5700A-1651 Figure 6-18. A13 Oscillator Output PCATable 6-17. A13A1 Oscillator Wideband SMD PCA 5700A/5720A Series II CalibratorDesignator List of Replaceable Parts Service Centers5700A-1652 Figure 6-19. A13A1 Oscillator Wideband SMD PCATable 6-18. A14 High Voltage Control PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-18. A14 High Voltage Control PCA cont 5700A-1661 5700A/5720A Series II CalibratorFigure 6-20. A14 High Voltage Control PCA 57001661.EPSList of Replaceable Parts Service CentersTable 6-19. A15 High Voltage/High Current PCA Table 6-19. A15 High Voltage/High Current PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service Centers5700A-1660 Figure 6-21. A15 High Voltage/High Current PCA5700A/5720A Series II Calibrator Table 6-20. A16 Power Amplifier PCADesignator CR20,CR21,CR23Table 6-20. A16 Power Amplifier PCA cont Service CentersList of Replaceable Parts R9,R10,R16,R33, R40,R50 R59, R115,R148 R149 R11,R125700A/5720A Series II Calibrator Table 6-20. A16 Power Amplifier PCA contFigure 6-22. A16 Power Amplifier PCA Service Centers5700A-7670 List of Replaceable Parts5700A/5720A Series II Calibrator Table 6-21. A16A1 Power Amplifier Digital Control SIP PCAFigure 6-23. A16A1 Power Amplifier Digital Control SIP PCA Service CentersList of Replaceable Parts 5700A-1671Table 6-22. A17 Regulator/Guard Crossing PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersTable 6-22. A17 Regulator/Guard Crossing PCA cont 5700A-1680 5700A/5720A Series II CalibratorFigure 6-24. A17 Regulator/Guard Crossing PCA 57001680.EPSList of Replaceable Parts Service CentersTable 6-23. A18 Filter/PA Supply PCA CR1,CR2,CR04, CR5 CR8,CR10, CR12,CR13Table 6-23. A18 Filter/PA Supply PCA cont 5700A/5720A Series II CalibratorStock List of Replaceable Parts Service CentersTable 6-23. A18 Filter/PA Supply PCA cont VR211,VR217 VR227,VR231 VR212,VR216 VR226,VR232 VR214,VR2305700A-7690 5700A/5720A Series II CalibratorFigure 6-25. A18 Filter/PA Supply PCA 57001690.EPSTable 6-24. A19 Digital Power Supply PCA Service CentersList of Replaceable Parts C24,C25 CR1-4,CR9-12 CR8,CR16, CR21- 24,CR29-345700A/5720A Series II Calibrator Table 6-24. A19 Digital Power Supply PCA contFigure 6-26. A19 Digital Power Supply PCA Service CentersList of Replaceable Parts 5700A-1604Table 6-25. A20 CPU PCA 5700A/5720A Series II CalibratorRef Des DescriptionList of Replaceable Parts Service CentersTable 6-26. A20 CPU PCA cont Ref DesFigure 6-27. A20 CPU PCA 5700A/5720A Series II Calibrator57001606.EPS List of Replaceable Parts Service CentersTable 6-27. A21 Rear Panel PCA Table 6-27. A21 Rear Panel PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service Centers5700A-1609 Figure 6-28. A21 Rear Panel PCA5700A/5720A Series II Calibrator Service ManualChapter Schematic DiagramsTitle Page5700A/5720A Series II Calibrator Service ManualFigure 7-1. A1 Keyboard PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-1. A1 Keyboard PCA cont Figure 7-2. A2 Front Panel PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-2. A2 Front Panel PCA cont Figure 7-2. A2 Front Panel PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-2. A2 Front Panel PCA cont Figure 7-2. A2 Front Panel PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-3. A3 Analog Motherboard PCA Figure 7-23. A3 Analog Motherboard PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-3. A3 Analog Motherboard PCA cont Figure 7-3. A3 Analog Motherboard PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-3. A3 Analog Motherboard PCA cont Figure 7-4. A4 Digital Motherboard PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-4. A4 Digital Motherboard PCA cont Figure 7-4. A4 Digital Motherboard PCA cont Schematic Diagramsahp46f.tif 5700A/5720A Series Service ManualFigure 7-4. A4 Digital Motherboard PCA cont 5700A-1611 Schematic DiagramsFigure 7-5. A5 Wideband Output PCA Option 5700A/5720A Series Service ManualFigure 7-5. A5 Wideband Output PCA Option -03 cont Figure 7-5. A5 Wideband Output PCA Option -03 cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-5. A5 Wideband Output PCA Option -03 cont 7-23 Schematic Diagrams5700A-7610 Figure 7-6. A6 Wideband Oscillator PCA Option5700A/5720A Series Service ManualFigure 7-6. A6 Wideband Output PCA Option Figure 7-6. A6 Wideband Oscillator PCA Option -03 cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-6. A6 Wideband Oscillator PCA Option -03 cont Figure 7-7. A7 Current/High-Resolution Oscillator PCA Schematic Diagrams5700A-1621 Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont Service Manual5700A/5720A Series Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont Schematic DiagramsFigure 7-7. A7 Current/High-Resolution Oscillator PCA cont Service Manual5700A/5720A Series Figure 7-7. A7 Current/High-Resolution Schematic Diagrams7-31 5700A-1021 4 ofFigure 7-8. A8 Switch Matrix PCA Service Manual5700A/5720A Series 5700A-1622Figure 7-8. A8 Swith Matrix PCA cont Schematic DiagramsFigure 7-8. A8 Switch Matrix PCA cont Service Manual5700A/5720A Series Figure 7-8. A8 Swith Matrix PCA cont Schematic DiagramsFigure 7-8. A8 Switch Matrix PCA cont Service Manual5700A/5720A Series Figure 7-8. A8 Swith Matrix PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-9. A9 Ohms Cal PCA 5700A-1631Figure 7-9. A9 Ohms Cal PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-9. A9 Ohms Cal PCA cont Figure 7-9. A9 Ohms Cal PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-9. A9 Ohms Cal PCA cont Figure 7-10. A10 Ohms Main PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-10. A10 Ohms Main PCA cont Figure 7-10. A10 Ohms Main PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-10. A10 Ohms Main PCA cont Figure 7-10. A10 Ohms Main PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-11. A11 DAC PCA 5700A-7640Figure 7-11. A11 DAC PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-11. A11 DAC PCA cont 22uFFigure 7-11. A11 DAC PCA cont Schematic Diagrams5700A/5720A Series Service Manual7-52 Figure 7-11. A11 DAC PCA contFigure 7-11. A11 DAC PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-11. A11 DAC PCA cont Figure 7-12. A11A1 DAC Filter SIP PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-13. A1142 DAC Buffered Reference SIP PCA 5700A-7650 Schematic DiagramsFigure 7-14. A12 Oscillator Control PCA cont 4. C5 AND C55 ARE NOT INSTALLED Service Manual5700A/5720A Series Figure 7-14. A12 Oscillator Control PCA contFigure 7-14. A12 Oscillator Control PCA cont Schematic Diagrams5700A/5720A Series Service Manual7-60 Figure 7-14. A12 Oscillator Control PCA contFigure 7-15. A13 Oscillator Output PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-15. A13 Oscillator Output PCA cont Figure 7-15. A13 Oscillator Output PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-15. A13 Oscillator Output PCA cont Figure 7-16. A13A1 Oscillator Wideband SMD PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-16. A13A1 Oscillator Wideband SMD PCA cont Figure 7-17. A14 High Voltage Control PCA Schematic Diagrams5700A/5720A Series Service Manual7-68 Figure 7-17. A14 High Voltage Control PCA contFigure 7-17. A14 High Voltage Control PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-17. A14 High Voltage Control PCA cont Figure 7-17. A14 High Voltage Control PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-18. A15 High Voltage/ High Current PCA 5700A-1660Figure 7-18. A15 High Voltage/High Current PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-18. A15 High Voltage/High Current PCA cont Figure 7-19. A16 Power Amplifier PCA Schematic Diagrams5700A-7670 Figure 7-19. A16 Power Amplifier PCA cont Service Manual4. NOT INSTALLED 5700A/5720A SeriesFigure 7-19. A16 Power Amplifier PCA cont Schematic Diagrams10 M 2N4044 Figure 7-19. A16 Power Amplifier PCA cont Service Manual5700A/5720A Series 7-78Figure 7-20. A16A1 Power Amplifier Digitial Control SIP PCA Schematic DiagramsFigure 7-20. A161A1 Power Amplifier Digital Service Manual5700A/5720A Series 7-805700A-1680 Schematic DiagramsFigure 7-21. A17 Regulator/Guard Crossing PCA 5700A/5720A Series Service ManualFigure 7-21. A17 Regulator/Guard Crossing PCA cont Figure 7-21. A17 Regulator/Guard Crossing PCA cont Schematic Diagrams5700A/5720A Series Service Manual7-84 5700A-7690Figure 7-22. A18 Filter/PA Supply PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-22. A18 Filter/PA Supply PCA cont Figure 7-23. A19 Digital Power Supply PCA Schematic DiagramsFigure 7-23. A19 Digital Power Supply PCA cont Service Manual5700A/5720A Series Figure 7-24. A20 CPU PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-24. A20 CPU PCA cont Figure 7-24. A20 CPU PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-24. A20 CPU PCA cont Figure 7-24. A20 CPU PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-24. A20 CPU PCA cont Figure 7-25. A21 Real Panel PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-25. A21 Rear Panel PCA cont Figure 7-25. A21 Rear Panel PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-25. A21 Rear Panel PCA cont Figure 7-25. A21 Rear Panel PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-25. A21 Rear Panel PCA cont Figure 7-26. Hybrids Schematic Diagrams5700A/5720A Series Service ManualFigure 7-26. Hybrids cont Figure 7-26. Hybrids cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-26. Hybrids cont Figure 7-26. Hybrids cont Schematic Diagrams5700A/5720A Series Service Manual