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Fluke 5720A Theory of Operation, Analog Section Detailed Circuit Description, ahp022f.eps

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Theory of Operation 2

Analog Section Detailed Circuit Description

ahp022f.eps

Figure 2-25. High Voltage/High Current Assembly 1100V AC Range

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Fluke 5720A service manual Theory of Operation, Analog Section Detailed Circuit Description, ahp022f.eps

Contents

Service Manual 5700A/5720A SeriesMulti-Function Calibrator 5/94 LIMITED WARRANTY & LIMITATION OF LIABILITYInterference Information Declaration of the Manufacturer or ImporterBescheinigung des Herstellers/Importeurs Page Terms in this Manual OPERATOR SAFETY SUMMARYHIGH VOLTAGE LETHAL VOLTAGEUse the Proper Fuse Symbols Marked on EquipmentPower Source Use the Proper Power CordUse Care When Servicing With Power On SERVICING SAFETY SUMMARYFOR QUALIFIED SERVICE PERSONNEL ONLY Do Not Service AloneNever Accept Ordinary and General Tests for Death FIRST AID FOR ELECTRIC SHOCKFree the Victim From the Live Conductor Get HelpPage Table of ContentsIntroduction and Specifications TitleTheory of Operation 5700A/5720A Series±PA Supplies Digital Control How the DAC is Used in Calibration 5700A/5720A SeriesCalibration and Verification Ohms Cal Assembly A9Calibration Procedure Using Remote Commands Reserved for Servicing MaintenanceTroubleshooting Rear Panel Assembly AccessList of Replaceable Parts Schematic DiagramsService Manual 5700A/5720A Seriesviii List of Tables TitlePage 5700A/5720A Series Unregulated Supplies from the Filter AssemblyA13A1 Oscillator Wideband SMD PCA A16A1 Power Amplifier Digital Control SIP PCATest Record for Flatness Check of the AC 2 mV Range A11A2 DAC Buffered Reference SIP PCA5700A/5720A Series Service ManualList of Figures TitlePage 5700A/5720A Series Ohms Main Assembly Simplified SchematicA15 High Voltage/High Current PCA Power Amplifier with Calibrator Set to 22V at 1 kHzA16A1 Power Amplifier Digital Control SIP PCA A13A1 Oscillator Wideband SMD PCA5700A/5720A Series Service ManualIntroduction and Specifications ChapterTitle 5700A/5720A Series II Calibrator Service Manual1-1. Introduction 1-4. How to Use this Manual 1-2. Contacting Fluke1-3. About this Manual ∙ 5700A/5720A Series II Operator Reference Guide PN 1-5. Additional Instruction Manuals1-6. Wideband AC Voltage Module Option 5700A-03 ∙ 5700A/5720A Series II Getting Started Manual PN1-9. Support Equipment and Services 1-7. Auxiliary Amplifiers1-8. 5725A Amplifier 1-13. Wideband AC Module Option 5700A-03 Calibration Support 1-11. 732B-200 Direct Volt Maintenance Program U.S.A. Only1-10. 732B Direct Voltage Reference Standard 1-12. 742A Series Resistance Standards1-15. 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 Process1-20. Calibration Check 1-21. Developing a Performance History1-19. Calibration Reports 1-22. Range Calibration 1-24. Specifications1-25. Specification Confidence Levels 1-26. Using Absolute and Relative Uncertainty SpecificationsSpecifications 1-27. Using Secondary Performance Specifications5720A 1-28. DC Voltage SpecificationsService Manual 5700A/5720A Series II Calibrator5700A Introduction and SpecificationsDC Voltage Specifications 5700AService Manual Overshoot 5 % Common mode rejection 140 dB, DC to 400 Hz5700A/5720A Series II Calibrator 5720A 1-29. AC Voltage SpecificationsIntroduction and Specifications AC Voltage Specifications95 % Confidence Level Service Manual5700A/5720A Series II Calibrator 5720A5700A Introduction and SpecificationsAC Voltage Specifications ± 5 C from calibration temperature95% Confidence Level Service Manual5700A/5720A Series II Calibrator 5700A0-10 C and Introduction and SpecificationsAC Voltage Specifications ± ppm output + μVFigure 1-2. Volt-Hertz Capability Service Manual5700A/5720A Series II Calibrator 5725A Amplifier5720A 1-30. Resistance SpecificationsIntroduction and Specifications Resistance Specifications5700A Service Manual5700A/5720A Series II Calibrator 5700ACharacterized Introduction and SpecificationsResistance Specifications ±1 C NoteI IL Service Manual5700A/5720A Series II Calibrator Table 1-13. Current Derating Factors5720A 99% 1-31. DC Current SpecificationsIntroduction and Specifications DC Current Specifications5700A Service Manual5700A/5720A Series II Calibrator 5700AIntroduction and Specifications DC Current SpecificationsOvershoot 5 % 5720A 99% 1-32. AC Current SpecificationsService Manual 5700A/5720A Series II Calibrator95 % Confidence Level Introduction and SpecificationsAC Current Specifications 5720A 95%99 % Confidence Level Service Manual5700A/5720A Series II Calibrator 5700A95 % Confidence Level Introduction and SpecificationsAC Current Specifications 5700A± ppm output + nA Service ManualTemperature Coefficient Note 5700A/5720A Series II CalibratorTable 1-22. Wideband AC Voltage Option 5700-03 Specifications 1-33. Wideband AC Voltage Option 5700-03 SpecificationsIntroduction and Specifications Wideband AC Voltage Option 5700-03 SpecificationsGuard isolation 20 1-34. General SpecificationsService Manual 5700A/5720A Series II Calibrator5220A AC Current, 180-day specifications 1-35. Auxiliary Amplifier SpecificationsIntroduction and Specifications Auxiliary Amplifier Specifications5700A/5720A Series II Calibrator Service ManualTheory of Operation ChapterTitle 2-36 Theory of Operation 2-155 2-4. Hybrid Reference Amplifiers 2-1. Introduction2-2. Calibrator Overview 2-3. Internal References2-7. Digital Section Overview 2-8. Analog Section Overview2-6. Digital-to-Analog Converter DAC ahp003f.eps Figure 2-1. Digital Section Block DiagramTheory of Operation Analog Section Overview2-10. DC Voltage Functional Description 2-9. Functional Description Presented by Output Functionahp33f.eps Figure 2-2. Analog Section Block Diagram, PartTheory of Operation Theory of OperationService Manual Figure 2-3. Analog Section Block Diagram, Part5700/5720A Series II Calibrator 2-11. AC Voltage Functional Description 2-12. Wideband AC V Functional Description Option 2-13. DC Current Functional Description2-14. AC Current Functional Description 2-17. Digital Motherboard Assembly A4 2-16. System Interconnect Detailed Circuit Description2-15. Ohms Functional Description 2-19. Analog Motherboard Assembly A3 2-18. Transformer Assembly A22ahp35f.eps Theory of OperationFunctional Description Presented by 0utput Function Figure 2-4. System InterconnectionsService Manual 5700/5720A Series II CalibratorFigure 2-4. System Interconnections cont Table 2-1. Analog Motherboard Connectors Motherboard ConnectorConnected to Assembly 2-23. Digital Section Detailed Circuit Description 2-21. Rear Panel Assembly A212-22. Filter PA Supply Assembly A18 2-24. Digital Power Supply Assembly A19Digital Section Detailed Circuit Description 2-25. +5V Power Supply2-26. ±12V Power Supplies 2-27. +35V Power Supply2-29. +35V and +75V Shut-Down Circuit 2-28. +75V Power Supply2-30. CPU Central Processing Unit Assembly A20 2-31. Power-Up and Reset Circuit2-32. Clock Generation Figure 2-5. CPU Assembly Block Diagram 5700A/5720A Series II Calibratorahp004f.eps Table 2-3. CPU Acronym Glossary Signal NameTheory of Operation Digital Section Detailed Circuit DescriptionChip Select 2-33. Watchdog Timer2-34. Address Decoding and DTACK Data Acknowledge Table 2-4. CPU Memory Map2-38. ROM Read-Only Memory 2-37. RAM Random-Access Memory2-35. Interrupt Controller 2-36. Glue Logic2-39. Electrically-Erasable Programmable Read-Only Memory EEPROM 2-40. DUART Dual Universal Asynchronous Receiver/transmitter Circuit2-41. Clock/Calendar Circuit 2-45. Fan Monitor 2-42. Clock Filter Circuit2-43. CPU to Rear Panel Interface 2-44. CPU to Front Panel Interface2-49. Decoding and Timing Circuitry 2-46. Front Panel Assembly A22-47. Clock Regeneration Circuitry 2-48. Refresh Failure Detect 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 Description2-61. Triac Circuit 2-58. Unregulated OSC Supplies2-59. Unregulated LH Supplies 2-60. Unregulated S Supplies2-65. Filter/PA Supply A18, Power Amplifier Output Supply Section 2-64. FR2 Supplies2-66. ±PA Supplies Digital Control Figure 2-6. Power Amplifier Output Supply Simplified Schematic 5700A/5720A Series II Calibratorahp005f.eps ∙ PA CT is the center tap 2-67. ±250V and ±500V Supplies2-68. +PA and -PA Supplies 2-69. ±PA Supply Current Limit2-70. Regulator/Guard Crossing Assembly A17 2-71. Voltage Regulator Circuitry2-72. Regulated OSC Supplies +15V +5.975V +5.1V +44.15V +17.000V -17.000V +30.96V +30.96V 2-73. Regulated LH Supplies2-74. Regulated S Supplies +15 OSC -15 OSC +5RLH +5LH -5LH +44S -44S +17S -17S 15S +30FR1 +30FR22-76. FR2 Supply 2-75. FR1 Supply2-79. Inguard Memory Configuration 2-77. Guarded Digital Control Circuitry2-78. Inguard CPU Memory Map 2-83. Break Detection 2-81. Inguard Watchdog Timer2-82. Power-Up and Reset Circuitry 2-80. Inguard Clock Circuit2-87. Switch Matrix Assembly A8 2-85. Interface to Guarded Digital Bus2-86. Inguard CPU Interrupts 2-88. Switch Matrix Digital Control Figure 2-7. Switch Matrix Assembly Simplified Schematic Theory of OperationSystem 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 Rangesahp006f.eps Figure 2-8. Switch Matrix Configuration for 11V DC and 22V DC RangesTheory of Operation Analog Section Detailed Circuit Description2-91. Switch Matrix Operation 220V AC and DC Ranges 2-90. Switch Matrix Operation 2.2V AC and 22V AC Rangesahp007f.eps Figure 2-9. Switch Matrix Configuration for 2.2V and 22V AC RangesTheory of Operation Analog Section Detailed Circuit DescriptionFigure 2-10. Switch Matrix Configuration for 220V DC and AC Ranges 5700A/5720A Series II Calibratorahp008f.eps 2-92. Switch Matrix Operation 2.2V DC Range Figure 2-11. Switch Matrix Configuration for 2.2V DC Range 5700A/5720A Series II Calibratorahp009f.eps 2-94. Switch Matrix Operation 220 mV DC Range 2-93. Calibration of the 2.2V RangeTo calibrate the offset 5700A/5720A Series II Calibrator Figure 2-12. Calibration of the 2.2V DC Rangeahp010f.eps ahp011f.eps Figure 2-13. Switch Matrix Configuration for 220 mV DC RangeTheory of Operation Analog Section Detailed Circuit Description2-95. Switch Matrix Operation 220 mV AC Range 2-96. Switch Matrix Operation 2.2 mV and 22 mV AC Ranges2-97. Calibration of the mV Ranges ahp012f.eps Theory of OperationAnalog Section Detailed Circuit Description Figure 2-14. V AC, 2.2 mV AC, and 22 mV AC Range5700A/5720A Series II Calibrator Figure 2-15. Divider Calibrationahp013f.eps 2-98. Internal CAL Zero Amplifier 5700A/5720A Series II Calibrator Figure 2-16. Divider Gain Calibrationahp014f.eps 2-99. Switch Matrix 5725A Amplifier Interface 2-100. DAC Assembly A112-101. Basic DAC Theory of Operation 0.1 x 13V + 0.5 x 0.78 mV = ahp015f.eps Figure 2-17. DAC Assembly Simplified SchematicTheory of Operation Analog Section Detailed Circuit Description2-102. DAC Assembly Digital Control 2-103. DAC Assembly Reference CircuitryProgrammable Peripheral Interface IC U31 is the heart of this circuit 2-104. Duty-Cycle Control Circuit 2-105. DAC Filter Circuit 2-106. DAC Output StageREFCOM 2-108. Linearity Control Circuit 2-107. Sense Current Cancellation Circuit2-110. DAC Output Switching 2-109. Negative Offset Circuit2-111. DAC Buffered Reference Sip 2-112. Calibration Hardware 2-113. ADC Amplifier2-114. ADC Input Selection ∙ ADC reference voltage ∙ ADC dac ∙ ADC comparator/amplifier 2-115. ADC Circuitahp016f.eps Theory of OperationAnalog Section Detailed Circuit Description Figure 2-18. ADC Circuit Measurement Functions2-117. DAC Assembly Calibration 2-116. How the DAC is Used in CalibrationINPUT 2-118. Oscillator Section Overview 2-119. Oscillator Control Assembly A122-121. Oscillator Input Switching 2-122. Sense Current Cancellation2-120. Oscillator Control Digital Control 2-126. Analog Amplitude Control Loop 2-124. Error Integrator2-123. Averaging Converter 2-125. Three-Pole Filter5700A/5720A Series II Calibrator Figure 2-19. Oscillator Control Analog Control Loopahp017f.eps 2-127. AC/DC Thermal Transfer Circuit 5700A/5720A Series II Calibrator Figure 2-20. AC/DC Thermal Transfer Circuitahp018f.eps 2-128. Oscillator Calibration 2-129. AC/DC Frequency Response Characterization 2-130. Oscillator Output Assembly A13ahp019f.eps Theory of OperationAnalog Section Detailed Circuit Description Figure 2-21. Quadrature RC Oscillator Circuit2-132. 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 A13A12-138. Phase Shifter 2-139. Power Amplifier Assembly A162-137. 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 A16A1∙ ±185V ∙ ±365V 2-141. PA Common Circuitry2-142. +PA and -PA Supplies 2-143. PA Input Stage2-145. PA Output Stage 2-144. PA Mid Stage2-146. PA Sense Current Cancellation Circuitry 2-147. PA in Standby2-148. PA Operation 220V DC Range Figure 2-22. Power Amplifier Simplified Schematic 5700A/5720A Series II Calibratorahp020f.eps 2-152. High Voltage DC 1100V Range and Current 2.2A Range 2-150. High Voltage Assembly Support Mode2-149. PA Operation 220V AC Range 2-151. High Voltage AC 1100V Range2-154. PA Calibration 2-153. 220V DC Internal Calibration Networkahp021f.eps Figure 2-23. Power Amplifier DC Calibration NetworkTheory of Operation Analog Section Detailed Circuit DescriptionPower 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 f2-24.eps Figure 2-24. Power Amplifier Calibration AC AttenuatorTheory of Operation Analog Section Detailed Circuit Description2-156. 1100V AC Range 2-155. High Voltage Assemblies A14 and A15ahp022f.eps Figure 2-25. High Voltage/High Current Assembly 1100V AC RangeTheory of Operation Analog Section Detailed Circuit Description2-158. HVDC Power Supply Filter Circuit 2-157. 1100V DC Range2-159. HV DC Output Series Pass and Current Limit Circuit ahp023f.eps Figure 2-26. High Voltage/High Current Assembly 1100V DC RangeTheory of Operation Analog Section Detailed Circuit Description2-161. 2.2A Range 2-160. DC HV Amplifier/AC Sense Bufferahp024f.eps Figure 2-27. High Voltage/High Current Assembly 2.2A AC and DC RangesTheory of Operation Analog Section Detailed Circuit Description2-162. 2.2A Power Supply Filter Circuit 2-163. High Voltage Digital Control 2-165. Calibration of the AC Function 2-164. High Voltage Calibrationahp025f.eps Figure 2-28. High Voltage/High Current Assembly CalibrationTheory of Operation Analog Section Detailed Circuit Description2-167. High Voltage Magnitude Control 2-166. Calibration of the Current FunctionTheory of Operation Analog Section Detailed Circuit Descriptionahp026f.eps 2-168. Ohms Overview 2-170. Selection of Resistance Values 2-169. Ohms Main Assembly A10ahp38f.eps Service ManualFigure 2-30. Ohms Assemblies Simplified Schematic 5700/5720A Series II Calibratorahp39f.eps Figure 2-31. Ohms Main Assembly Simplified SchematicTheory of Operation Analog Selection Detailed Circuit Description2-174. Ohms CAL Digital Control 2-171. Ohms Main Assembly Support of Current Function Calibration2-173. Ohms Cal Assembly A9 2-172. Ohms Digital Control2-175. 1, 1.9, and Short Resistance 2-176. Two-Wire Ohmmeter Compensation CircuitFigure 2-32. Two-Wire Lead Drop Compensation Circuit 5700A/5720A Series II Calibratorahp027f.eps 2-180. Ohms Calibration 2-177. Two-Wire Compensation Power Supplies2-178. High Side Cancellation 2-179. Low Side Cancellation5700A/5720A Series II Calibrator Figure 2-33. Calibration to an External 10 kΩ Standardahp028f.eps 2-181. Calibrating to the External 10 KW Standard 2-182. Calibrating 10 KW and 19 KW 2-183. Calibrating 100 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 5700A/5720A Series II Calibrator Figure 2-34. Ratio Calibration, 10 Ω From 100 Ωahp029f.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 Switchingahp030f.eps Figure 2-35. Current Output Simplified SchematicTheory of Operation Analog Section Detailed Circuit Description2-189. Complementary Drive Circuit 2-190. Transconductance Amplifiers2-191. Shunt Resistors Table 2-15. Relay Settings for Current Range Selection Range 2-193. Current Output Switching2-192. Feedback Loop 2-194. Generation of the 2.2A Range2-197. Current/Compliance Voltage Monitor 2-198. Current Assembly Calibration2-195. Current Guard Buffer 2-196. Compliance Limiterahp031f.eps Figure 2-36. Current Assembly CalibrationTheory of Operation Analog Section Detailed Circuit Description∙ 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 Loop2-203. Hi-Res Output Switching 2-204. Rear Panel Assembly A212-202. 5-500k Output Divider 2-205. Rear Panel Power Supplies 2-206. Rear Panel Address Mapping∙ RPDUARTCS*, D00000-D0001F ∙ RPIEEECS*, D00020-D0002F 2-207. Clock Regeneration Circuit 2-208. IEEE-488 GPIB Interface2-209. RS-232C Interface 2-212. Phase Lock In/Variable Phase out 2-210. Auxiliary Amplifier Interface2-211. 5725A Interface 2-213. Rear Panel Relay Control 2-214. Rear Panel CPU InterfacePort A PA0-PA7 provides the input lines for relay driver U16 2-218. Wideband Oscillator Digital Control 2-216. Wideband Oscillator Assembly A62-217. Wideband Oscillator Power Supplies 2-215. Wideband AC Module Option2-219. 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 A5ahp032f.eps Figure 2-37. Wideband Output Assembly Simplified SchematicTheory of Operation Analog Section Detailed Circuit Description2-223. Wideband Output Power Amplifier Circuit 2-224. Wideband Output Attenuators 2-225. Wideband Output RMS Sensor and Amplitude Control Circuit2-226. 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 ManualCalibration and Verification ChapterTitle 3-30 Calibration and Verification 3-1. Introduction3-2. Accessing the Fuse Cleaning the Air Filter 3-3. Cleaning the Air Filter3-4. Cleaning the Exterior 3-5. Calibration3-6. Calibrating the 5700A/5720A Series II to External Standards 3-8. When to Adjust the Calibrator’s Uncertainty Specifications 3-7. Calibration RequirementsCalibrating the 5700A/5720A Series II to External Standards 3-9. Calibration Procedure Calibrating the 5700A/5720A Series II to External Standards 4. Enter the ambient temperature then press E. The display shows5. Connect the 732B to the calibrator as shown in Figure Calibration and VerificationIF3-5.EPS IF3-6.EPSIF3-7.EPS After a few seconds, the following display appears F7-4.EPS RESISTANCE STANDARDCALIBRATOR Figure 3-4. 742A-1 and 742A-10k External Calibration Connections16. 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 TestsDescription 5700A/5720A Series II CalibratorTable 3-2. List of Required Equipment for Main Output Equipment3-16. 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 Calibration and Verification 3-23. AC Current Test, 22 mA to 11A RangesTable 3-8. 5790A Adjustment Counts 5790A Adjustment Counts1. Connect the equipment as shown in Figure 3-12A use the 2A shunt Calibration and Verification Figure 3-12. Alternating Current Test SetupA. Alternating Current Test Setup, 22 mA to 2A Using 5790A Input B. Alternating Current Test Setup, 10A Using 5790A InputPomona Cable 1362-A-18 3-24. AC Current Test, 2 mA and 200 μA RangesHi Output Lo Metal Film Resistor Mounted on Dual Banana Plug 2003-25. Rationale for Using Metal-Film Resistors to Measure AC Current Figure 3-14. Metal Film Resistor Equivalent CircuitFigure 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 Tests3-33. DC Voltage Linearity Test 3-34. DC Voltage Output Noise 10 Hz to 10 kHz TestOptional Tests 2. Set the Oscilloscope Differential Amplifier controls as shown below WWarning 3-37. Wideband Distortion Testing3-35. DC Voltage Output Noise 0.1 to 10 Hz Test 3-36. AC Voltage Distortion Test3-38. AC Voltage Overshoot Test 3-39. Minimum Use RequirementsTable 3-15. Minimum Use Requirements Minimum Use SpecificationsCalibration and Verification Minimum Use Requirements3-40. Determining Test Limits for Other Calibration Intervals 130 + 1000000*0.000000040/0.002=130 ppm + 20 ppm = 150 ppm Measured 1Ω Std Voltage DMM Error1Ω Std Res Value 1Ω Std VoltageDMM Std Res Rdg DMM ErrorTable 3-16. 5720A Resistance Test Record cont Std Res Value1Ω Std Voltage DMM ErrorTable 3-17. 5700A Resistance Test Record 1Ω Std Res ValueDMM Std Res Rdg DMM ErrorTable 3-17. 5700A Resistance Test Record cont Max Std Res Value5720A Range Divider Setting5700A/5720A Series II Calibrator Table 3-18. DC Voltage Test Record for 5720ATable 3-19. DC Voltage Test Record for 5700A Divider SettingCalibration and Verification Determining Test Limits for Other Calibration Intervals5700A/5720A Series II Calibrator UUT ErrorSetting Error A+BCalibration and Verification UUT ErrorError A+B SettingOutput Error Display Reading5700A/5720A Series II Calibrator Table 3-23. 5720A AC Voltage Output Test RecordOutput Level ErrorCalibration and Verification Determining Test Limits for Other Calibration IntervalsOutput Error Display Reading5700A/5720A Series II Calibrator Table 3-24. 5700A AC Voltage Output Test RecordDetermining Test Limits for Other Calibration Intervals ErrorError Display Reading Calibration and VerificationTable 3-26. 5720A AC Current 20 mA to 10A Accuracy Test Record UUT Error DisplayCalculated Error 5700A/5720A Series II CalibratorDetermining Test Limits for Other Calibration Intervals UUT Error DisplayCalculated Error Calibration and VerificationTable 3-28. 5720A AC Current 2 mA and 200 μA Accuracy Test Record ErrorError 5700A/5720A Series II CalibratorFrequency Hz Calibration and VerificationDetermining Test Limits for Other Calibration Intervals Table 3-30. Wideband Frequency Accuracy Test RecordTable 3-31. Wideband Accuracy at 1 kHz Test Record Measured ErrorMeasured Flatness Error 5700A/5720A Series II CalibratorTable 3-32. Wideband Flatness Test Record cont Measured Flatness ErrorCalibration and Verification Determining Test Limits for Other Calibration IntervalsError Sum ppm Table 3-33. Wideband Absolute Error 10 Hz to 500 kHz1 kHz Absolute Error ppm Flatness Error ppmDetermining Test Limits for Other Calibration Intervals Div. SettingKelvin-Varley Setting Calibration and Verification5700A/5720A Series II Output UUT Error Display Reading5700A/5720A Series II Calibrator Table 3-37. AC V Distortion Test SummaryA Message From static awarenessFluke Corporation 5. USE STATIC SHIELDING CONTAINERS FOR HANDLING AND TRANSPORT Maintenance ChapterTitle 5700A/5720A Series II Calibrator Service Manual4-1. Introduction 4-2. Cleaning the Air Filter4-9. Rear Panel Removal and Installation 4-3. General Cleaning4-4. Cleaning PCA’s 4-5. Access Procedures4-10. 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 Installation5700A/5720A Series II Calibrator Figure 4-5. Analog and Digital AssembliesFRONT PANEL 4-17. Hybrid Cover Removal 4-18. Front/Rear Binding Post Reconfiguration4-15. Digital Assembly Removal and Installation 4-16. Power Transformer Removal and Installation6. Install the Front Panel 4-19. Installing a Wideband AC Module Option 4-21. Replacing the Clock/Calendar Backup Battery4-20. Clearing Ghost Images from the Control Display ETIME 4-22. Using Remote Commands Reserved for Servicing4-23. Using the ETIME Command Using The Fatality? and Fatalclr CommandsDescription FATALITY?FATLCLR? Response5700A/5720A Series II Calibrator Service ManualTroubleshooting ChapterTitle 5700A/5720A Series II Calibrator Service Manual2703 A7 8255 Port C Fault 5-2. Interpreting Diagnostic Fault Codes2701 A7 8255 Port a Fault 2702 A7 8255 Port B Fault2709 A7 Current Magnitude Fault 2705 A7 Oven Regulation Fault2706 A7 Current Compliance Fault 2707 A7 Hardware Initialization Fault2714 A7 Hi-res Loop In 1kHz Range 2718 Fault In Setting Up AC For Diagnostics2719 A7 8255 Was Reset 2713 A7 Hi-Res Loop In 100Hz Range2804 A11 DAC Heaters Not Regulated 2801 A11 8255 Port a Wires2802 A11 8255 Port B Data Bus 2803 A11 8254 Status Words2811 A11 -11V DC Range Fault 2808 A11 ADC Amp Gain Error2809 A11 DAC Monitoring Fault 2810 A11 +11V DC Range Fault2818 Assembly A11 Missing 2815 A11 6.5V Reference Fault2816 A11 13V Buffered Reference Fault 2817 A11 13V Reference Fault3102 A14 8255 Port B Fault 2822 A8/A11 -11/22V DC Zero Estimate Fault2826 A11 A/D Overload Fault 3101 A14 8255 Port a Fault3106 A15 DC HV Amp Noise Fault 3103 A14 8255 Port C Fault3104 A15 HV Oven Regulation Fault 3105 A15 HV I Oven Regulation Fault3112 A15 HV +DC Ref/error Amplitude Fault 3109 A15 HV +DC Preamplifier Fault3110 A15 HV +DC Series Pass & Current Fault 3111 A15 HV +DC High Voltage Output Fault3119 A14/A15 HV +DC Current Abs. Value 3116 A15 HV -DC Reference/error Amp Fault3117 A14/A15 HV +DC Current Error Amp Fault 3118 A14/A15 HV -DC Current Error Amp Fault3124 A14/A15 HV AC 1kHz, Preamp Hi 3126 A14/A15 HV AC 100Hz, Preamp Fault3122 A14/A15 HV AC 1kHz, Preamp Lo 3123 A14/A15 HV AC 1kHz, Preamp Mid3131 A14/A15 HV AC 100Hz, Output Lo 3128 A14/A15 HV AC 1kHz, Output Lo3129 A14/A15 HV AC 1kHz, Output Mid 3130 A14/A15 HV AC 1kHz, Output Hi3134 Spare 3135 Assembly A14 Not Responding3136 A14 8255 Was Reset 3137 A14/A15/A16 2.2A AC Range Mag. Fault3141 A14/A15/A16 2.2A DC Range Dummy Load 3301 A9 8255 Port a Fault3302 A9 8255 Port B Fault 3140 A14/A15/A16 2.2A AC Range Abs. Value3306 A9 2V Source Fault 3303 A9 8255 Port C Fault3304 A9 10V Source Fault 3305 A9 5V Source Fault3312 A9/A10 Ohms 11 Divider Fault 3309 A9 Diff Amp Gain Fault3310 A9 Diff Amp Noise Fault 3311 A9/A10 Ohms 101 Divider Fault3318 A9/A10 190 Kilohm Ratio Fault 3315 A9/A10 10 Ohm Cal Diag Fault3316 A9/A10 19 Ohm Cal Diag Fault 3317 A9/A10 100 Kilohm Ratio Fault3326 A9/A10 19 Kilohm Check Fault 3321 A9/A10 10M Ohm Ratio Fault3324 A9/A10 100M Ohm Ratio Fault 3325 A9/A10 10 Kilohm Check Fault3330 A9/A10 190 Ohm Check Fault 3327 A9/A10 1 Kilohm Check Fault3328 A9/A10 1.9 Kilohm Check Fault 3329 A9/A10 100 Ohm Check Fault3337 A9/A10 Ohms Correction Factor Fault 3334 A9/A10 1.9 Ohm Check Fault3335 A9/A10 Ohms Short Check Fault 3336 A9/A10 2 Wire Compensation Fault3402 A12 8255 Port B 3341 A9/A10 190 Ohm Cal Diag Fault3400 A12 8255 Control Word 3401 A12 8255 Port A3412 A12 To A13 Interface Fault 3408 A13 Fixed Ampl. Osc Fault3409 A13 Phase Lock Loop Fault 3410 A12/A13 22V Amp Bias Adj Error3414 A12/A13 Nonlinear Control Loop 2vrng 3416 A12/A13 DAC 15th Bit Fault3417 A12 DC Sensor Buffer Fault 3418 A12 Sensor Loop/SQ. Root Amp Fault3426 A12 8255 Was Reset 3423 Assembly A12 Missing3424 Assembly A13 Missing 3425 Assembly A12 Or A13 Not Responding3504 Spare 3508 A16/A14 220V AC Range Output Fault3510 A16 220V Amp Fault 3503 A16 8255 Port C3513 Spare 3520 A16 PA Oven Regulation Fault3511 A16 Incorrect PA Input 3512 Spare3526 220V AC Initialization Fault 3521 Assembly A16 Is Not Responding3524 A16 Power Amp Is Too Hot 3525 220V DC Initialization Fault3602 +15S Supply Fault 3530 A16 8255 Was Reset3600 +17S Supply Fault 3601 -17S Supply Fault3608 +5rLH Supply Fault 3605 -42S Supply Fault3606 LH Com Ground Fault 3607 -5lH Supply Fault3614 OSC Com Ground Fault 3611 -PA Supply Fault3612 +15 OSC Supply Fault 3613 -15 OSC Supply Fault3703 A21 8255 Port C Fault 3615 S Com Ground Fault3701 A21 8255 Port A Fault 3702 A21 8255 Port B Fault3804 A8 Zero Amp Lo Noise Fault 3801 A8 8255 Port A Fault3802 A8 8255 Port B Fault 3803 A8 8255 Port C Fault3814 A8 220mV Divider Fault 3815 A8 22mV Divider Fault 3816 Spare 3809 A8 Zero Amp Hi Gain Fault3810 A8 2.2V Amp Noise Fault 3811 A8 Zero Amp Offset 3812 A8 2.2V Gain Fault 3813 A8 220mV Offset Fault3827 Assembly A8 Too Hot 3900 A5 8255 Control Word 3824 A8 Oven Regulation Fault3825 Assembly A8 Not Responding 3826 A8 8255 Was Reset3908 A5 Rms Sensor At 30MHz 3905 A6 Phase Lock Loop At 10MHz3906 A6 Phase Lock Loop At 30MHz 3907 A5 Rms Sensor At 10MHz3912 A5/A6 Output Offset At 10MHz 3914 A5 0DB Output Attenuation Fault3915 A5 10DB Output Attenuation Fault 3911 A5/A6 Ampl. Control At 30MHz3922 A5/A6 Wideband Initialization Fault 3916 A5 20DB Output Attenuation Fault3917 A5 30DB Output Attenuation Fault 3918 A5 40DB Output Attenuation Fault5-3. Component-level Troubleshooting 3923 A5 8255 Was Reset5-4. 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 K2K10, K13 Figure 5-7. Waveform at Pin 6 of K21.2 Ω K5C, K5DF5-10.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 Figure 5-18. Waveform at TP4, Calibrator Set to TroubleshootingComponent-level Troubleshooting Figure 5-17. Waveform at TP65700A/5720A Series II Calibrator Figure 5-19. Waveform at TP4, Calibrator Set toF5-19.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 U6Figure 5-24. Waveform at Pin 4 of U10 TroubleshootingComponent-level Troubleshooting Figure 5-23. Waveform at Pin 6 of U13U11, 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 F5-27.EPS 5700A/5720A Series II CalibratorFigure 5-27. Waveform at Anode of CR4 Figure 5-28. Waveform at Pin 6 of U11F5-29.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 Manual6-3. Manual Status Information 6-2. How to Obtain PartsA * symbol indicates a device that may be damaged by static discharge 6-1. IntroductionRef or Option No 6-5. Service CentersManual Status Information Assembly Name 5700A/5720A Series II CalibratorReference Description Designator Service CentersTable 6-1. Front Panel Final Assembly List of Replaceable Partsf6-1.eps Figure 6-1. Front Panel Final Assembly5700A/5720A Series II Calibrator 5700A-T&BService Centers Table 6-1. Chassis Final AssemblyList of Replaceable Parts 1 of Figure 6-2. Chassis Final Assembly5700A/5720A Series II Calibrator 5700A T&Bf61a2.eps Service CentersFigure 6-2. Chassis Final Assembly cont List of Replaceable Parts5700A/5720A Series II Calibrator Table 6-1. Rear Panel Final Assemblyf61b.eps Service CentersFigure 6-3. Rear Panel Final Assembly List of Replaceable PartsCR1-4 DT1, DT2 W1 ISOLATOR,OPTO,OPTICAL SWITCH,INFRARED5700A/5720A Series II Calibrator Table 6-2. A1 Keyboard PCAFigure 6-4. A1 Keyboard PCA Service CentersList of Replaceable Parts 5700A-16035700A/5720A Series II Calibrator Table 6-3. A2 Front Panel PCADesignator Service Centers List of Replaceable PartsTable 6-3. A2 Front Panel PCA cont 57001602.EPS 5700A/5720A Series II Calibrator5700A-1602 Figure 6-5. A2 Front Panel PCAService Centers List of Replaceable PartsTable 6-4. A3 Analog Motherboard PCA 5700A/5720A Series II Calibrator 5700A-1601Figure 6-6. A3 Analog Motherboard PCA Service Centers List of Replaceable PartsTable 6-5. A4 Digital Motherboard PCA 57001605.EPS 5700A/5720A Series II Calibrator5700A-1605 Figure 6-7. A4 Digital Motherboard PCADesignator Service CentersList of Replaceable Parts Table 6-6. A5 Wideband Output PCA, OptionTable 6-6. A5 Wideband Output PCA, Option -03 cont 5700A/5720A Series II CalibratorR69,R70 R72,R73,R80-83 R74 R75 R78,R79,R86-89 R92-95 R96-99 R100 R101 Service CentersList of Replaceable Parts Table 6-6. A5 Wideband Output PCA, Option -03 cont57001611.EPS 5700A/5720A Series II Calibrator5700A-1611 Figure 6-8. A5 Wideband Output PCA, OptionService Centers List of Replaceable PartsTable 6-7. A6 Wideband Ocillator PCA, Option Designator CONNECTOR ,CONN,DIN41612,TYPE C,RT ANG,64 PIN5700A/5720A Series II Calibrator Table 6-7. A6 Wideband Ocillator PCA, Option -03 contR58,R112,R212 R312,R412,R512 R59 R61 R62,R64,R65,R69 R63 R68 R71 Service CentersList of Replaceable Parts Table 6-7. A6 Wideband Ocillator PCA, Option -03 cont57001610.EPS 5700A/5720A Series II Calibrator5700A-1610 Figure 6-9. A6 Wideband Oscillator PCA, OptionService Centers List of Replaceable PartsTable 6-8. A7 Current/High-Res Oscillator PCA Table 6-8. A7 Current/High-Res Oscillator PCA cont 5700A/5720A Series II CalibratorDesignator Service CentersList of Replaceable Parts Table 6-8. A7 Current/High-Res Oscillator PCA cont57001621.EPS 5700A/5720A Series II Calibrator5700A-1621 Figure 6-10. A7 Current/HIgh-Res Oscillator PCAReference Designator Service CentersTable 6-9. A8 Switch Matrix PCA List of Replaceable Parts5700A/5720A Series II Calibrator Table 6-9. A8 Switch Matrix PCA cont5700A-1622 Service CentersFigure 6-11. A8 Switch Matrix PCA List of Replaceable PartsTable 6-10. A9 Ohms Cal PCA 5700A/5720A Series II CalibratorService Centers List of Replaceable PartsTable 6-10. A9 Ohms Cal PCA cont 57001631.EPS 5700A/5720A Series II Calibrator5700A-1631 Figure 6-12. A9 Ohms Cal PCAService Centers List of Replaceable PartsTable 6-11. A10 Ohms Main PCA 57001630.EPS 5700A/5720A Series II Calibrator5700A-1630 Figure 6-13. A10 Ohms Main PCAC110,C111 CR1,CR3-6,CR8, CR12,CR13 CR2 Service CentersList of Replaceable Parts Table 6-12. A11 DAC PCATable 6-12. A11 DAC PCA cont 5700A/5720A Series II CalibratorService Centers List of Replaceable PartsTable 6-12. A11 DAC PCA cont 5700A/5720A Series II Calibrator Table 6-12. A11 DAC PCA contVR13 VR18,VR22 VR25 VR26 VR27 VR28 VR29 VR33,VR34 X1 Z2 Z4 Z5 Z8 Z10 Figure 6-14. A11 DAC PCA Service CentersList of Replaceable Parts 5700A-1640Table 6-13. A11A1 DAC Filter SIP PCA 5700A/5720A Series II CalibratorFigure 6-15. A11A1 DAC Filter SIP PCA Service CentersList of Replaceable Parts 5700A-1643Table 6-14. A11A2 DAC Buffered Reference SIP PCA 5700A/5720A Series II CalibratorFigure 6-16. A11A2 DAC Buffered Reference SIP PCA Service CentersList of Replaceable Parts 5700A-1644Table 6-15. A12 Oscillator Control PCA 5700A/5720A Series II CalibratorStock Service CentersList of Replaceable Parts Table 6-15. A12 Oscillator Control PCA cont5700A/5720A Series II Calibrator Table 6-15. A12 Oscillator Control PCA contDesignator Figure 6-17. A12 Oscillator Control PCA Service CentersList of Replaceable Parts 5700A-1650Table 6-16. A13 Oscillator Output PCA 5700A/5720A Series II CalibratorService Centers List of Replaceable PartsTable 6-16. A13 Oscillator Output PCA cont Table 6-16. A13 Oscillator Output PCA cont 5700A/5720A Series II CalibratorFigure 6-18. A13 Oscillator Output PCA Service CentersList of Replaceable Parts 5700A-16515700A/5720A Series II Calibrator Table 6-17. A13A1 Oscillator Wideband SMD PCADesignator Figure 6-19. A13A1 Oscillator Wideband SMD PCA Service CentersList of Replaceable Parts 5700A-1652Table 6-18. A14 High Voltage Control PCA 5700A/5720A Series II CalibratorService Centers List of Replaceable PartsTable 6-18. A14 High Voltage Control PCA cont 57001661.EPS 5700A/5720A Series II Calibrator5700A-1661 Figure 6-20. A14 High Voltage Control PCAService Centers List of Replaceable PartsTable 6-19. A15 High Voltage/High Current PCA Table 6-19. A15 High Voltage/High Current PCA cont 5700A/5720A Series II CalibratorFigure 6-21. A15 High Voltage/High Current PCA Service CentersList of Replaceable Parts 5700A-1660CR20,CR21,CR23 Table 6-20. A16 Power Amplifier PCA5700A/5720A Series II Calibrator DesignatorR9,R10,R16,R33, R40,R50 R59, R115,R148 R149 R11,R12 Service CentersTable 6-20. A16 Power Amplifier PCA cont List of Replaceable Parts5700A/5720A Series II Calibrator Table 6-20. A16 Power Amplifier PCA contList of Replaceable Parts Service CentersFigure 6-22. A16 Power Amplifier PCA 5700A-76705700A/5720A Series II Calibrator Table 6-21. A16A1 Power Amplifier Digital Control SIP PCA5700A-1671 Service CentersFigure 6-23. A16A1 Power Amplifier Digital Control SIP PCA List of Replaceable PartsTable 6-22. A17 Regulator/Guard Crossing PCA 5700A/5720A Series II CalibratorService Centers List of Replaceable PartsTable 6-22. A17 Regulator/Guard Crossing PCA cont 57001680.EPS 5700A/5720A Series II Calibrator5700A-1680 Figure 6-24. A17 Regulator/Guard Crossing PCACR1,CR2,CR04, CR5 CR8,CR10, CR12,CR13 Service CentersList of Replaceable Parts Table 6-23. A18 Filter/PA Supply PCA5700A/5720A Series II Calibrator Table 6-23. A18 Filter/PA Supply PCA contStock VR211,VR217 VR227,VR231 VR212,VR216 VR226,VR232 VR214,VR230 Service CentersList of Replaceable Parts Table 6-23. A18 Filter/PA Supply PCA cont57001690.EPS 5700A/5720A Series II Calibrator5700A-7690 Figure 6-25. A18 Filter/PA Supply PCAC24,C25 CR1-4,CR9-12 CR8,CR16, CR21- 24,CR29-34 Service CentersTable 6-24. A19 Digital Power Supply PCA List of Replaceable Parts5700A/5720A Series II Calibrator Table 6-24. A19 Digital Power Supply PCA cont5700A-1604 Service CentersFigure 6-26. A19 Digital Power Supply PCA List of Replaceable PartsDescription 5700A/5720A Series II CalibratorTable 6-25. A20 CPU PCA Ref DesRef Des Service CentersList of Replaceable Parts Table 6-26. A20 CPU PCA cont5700A/5720A Series II Calibrator Figure 6-27. A20 CPU PCA57001606.EPS Service Centers List of Replaceable PartsTable 6-27. A21 Rear Panel PCA Table 6-27. A21 Rear Panel PCA cont 5700A/5720A Series II CalibratorFigure 6-28. A21 Rear Panel PCA Service CentersList of Replaceable Parts 5700A-16095700A/5720A Series II Calibrator Service ManualPage Schematic DiagramsChapter Title5700A/5720A Series II Calibrator Service ManualFigure 7-1. A1 Keyboard PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-1. A1 Keyboard PCA cont Figure 7-2. A2 Front Panel PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-2. A2 Front Panel PCA cont Figure 7-2. A2 Front Panel PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-2. A2 Front Panel PCA cont Figure 7-2. A2 Front Panel PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-3. A3 Analog Motherboard PCA Figure 7-23. A3 Analog Motherboard PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-3. A3 Analog Motherboard PCA cont Figure 7-3. A3 Analog Motherboard PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-3. A3 Analog Motherboard PCA cont Figure 7-4. A4 Digital Motherboard PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-4. A4 Digital Motherboard PCA cont Schematic Diagrams Figure 7-4. A4 Digital Motherboard PCA contahp46f.tif Service Manual 5700A/5720A SeriesFigure 7-4. A4 Digital Motherboard PCA cont Schematic Diagrams 5700A-1611Figure 7-5. A5 Wideband Output PCA Option Service Manual 5700A/5720A SeriesFigure 7-5. A5 Wideband Output PCA Option -03 cont Figure 7-5. A5 Wideband Output PCA Option -03 cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-5. A5 Wideband Output PCA Option -03 cont Figure 7-6. A6 Wideband Oscillator PCA Option Schematic Diagrams7-23 5700A-7610Service Manual 5700A/5720A SeriesFigure 7-6. A6 Wideband Output PCA Option Figure 7-6. A6 Wideband Oscillator PCA Option -03 cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-6. A6 Wideband Oscillator PCA Option -03 cont Schematic Diagrams Figure 7-7. A7 Current/High-Resolution Oscillator PCA5700A-1621 Service Manual Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont5700A/5720A Series Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont Schematic DiagramsService Manual Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont5700A/5720A Series 5700A-1021 4 of Schematic DiagramsFigure 7-7. A7 Current/High-Resolution 7-315700A-1622 Service ManualFigure 7-8. A8 Switch Matrix PCA 5700A/5720A SeriesFigure 7-8. A8 Swith Matrix PCA cont Schematic DiagramsService Manual Figure 7-8. A8 Switch Matrix PCA cont5700A/5720A Series Figure 7-8. A8 Swith Matrix PCA cont Schematic DiagramsService Manual Figure 7-8. A8 Switch Matrix PCA cont5700A/5720A Series Figure 7-8. A8 Swith Matrix PCA cont Schematic Diagrams5700A-1631 Service Manual5700A/5720A Series Figure 7-9. A9 Ohms Cal PCAFigure 7-9. A9 Ohms Cal PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-9. A9 Ohms Cal PCA cont Figure 7-9. A9 Ohms Cal PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-9. A9 Ohms Cal PCA cont Figure 7-10. A10 Ohms Main PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-10. A10 Ohms Main PCA cont Figure 7-10. A10 Ohms Main PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-10. A10 Ohms Main PCA cont Figure 7-10. A10 Ohms Main PCA Schematic Diagrams5700A-7640 Service Manual5700A/5720A Series Figure 7-11. A11 DAC PCAFigure 7-11. A11 DAC PCA cont Schematic Diagrams22uF Service Manual5700A/5720A Series Figure 7-11. A11 DAC PCA contFigure 7-11. A11 DAC PCA cont Schematic DiagramsFigure 7-11. A11 DAC PCA cont Service Manual5700A/5720A Series 7-52Figure 7-11. A11 DAC PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-11. A11 DAC PCA cont Figure 7-12. A11A1 DAC Filter SIP PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-13. A1142 DAC Buffered Reference SIP PCA Schematic Diagrams 5700A-7650Figure 7-14. A12 Oscillator Control PCA cont Figure 7-14. A12 Oscillator Control PCA cont Service Manual4. C5 AND C55 ARE NOT INSTALLED 5700A/5720A SeriesFigure 7-14. A12 Oscillator Control PCA cont Schematic DiagramsFigure 7-14. A12 Oscillator Control PCA cont Service Manual5700A/5720A Series 7-60Figure 7-15. A13 Oscillator Output PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-15. A13 Oscillator Output PCA cont Figure 7-15. A13 Oscillator Output PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-15. A13 Oscillator Output PCA cont Figure 7-16. A13A1 Oscillator Wideband SMD PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-16. A13A1 Oscillator Wideband SMD PCA cont Figure 7-17. A14 High Voltage Control PCA Schematic DiagramsFigure 7-17. A14 High Voltage Control PCA cont Service Manual5700A/5720A Series 7-68Figure 7-17. A14 High Voltage Control PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-17. A14 High Voltage Control PCA cont Figure 7-17. A14 High Voltage Control PCA cont Schematic Diagrams5700A-1660 Service Manual5700A/5720A Series Figure 7-18. A15 High Voltage/ High Current PCAFigure 7-18. A15 High Voltage/High Current PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-18. A15 High Voltage/High Current PCA cont Schematic Diagrams Figure 7-19. A16 Power Amplifier PCA5700A-7670 5700A/5720A Series Service ManualFigure 7-19. A16 Power Amplifier PCA cont 4. NOT INSTALLEDSchematic Diagrams Figure 7-19. A16 Power Amplifier PCA cont10 M 2N4044 7-78 Service ManualFigure 7-19. A16 Power Amplifier PCA cont 5700A/5720A SeriesFigure 7-20. A16A1 Power Amplifier Digitial Control SIP PCA Schematic Diagrams7-80 Service ManualFigure 7-20. A161A1 Power Amplifier Digital 5700A/5720A SeriesSchematic Diagrams 5700A-1680Figure 7-21. A17 Regulator/Guard Crossing PCA Service Manual 5700A/5720A SeriesFigure 7-21. A17 Regulator/Guard Crossing PCA cont Figure 7-21. A17 Regulator/Guard Crossing PCA cont Schematic Diagrams5700A-7690 Service Manual5700A/5720A Series 7-84Figure 7-22. A18 Filter/PA Supply PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-22. A18 Filter/PA Supply PCA cont Figure 7-23. A19 Digital Power Supply PCA Schematic DiagramsService Manual Figure 7-23. A19 Digital Power Supply PCA cont5700A/5720A Series Figure 7-24. A20 CPU PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-24. A20 CPU PCA cont Figure 7-24. A20 CPU PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-24. A20 CPU PCA cont Figure 7-24. A20 CPU PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-24. A20 CPU PCA cont Figure 7-25. A21 Real Panel PCA Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-25. A21 Rear Panel PCA cont Figure 7-25. A21 Rear Panel PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-25. A21 Rear Panel PCA cont Figure 7-25. A21 Rear Panel PCA cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-25. A21 Rear Panel PCA cont Figure 7-26. Hybrids Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-26. Hybrids cont Figure 7-26. Hybrids cont Schematic DiagramsService Manual 5700A/5720A SeriesFigure 7-26. Hybrids cont Figure 7-26. Hybrids cont Schematic Diagrams5700A/5720A Series Service Manual