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Fluke 5720A service manual Switch Matrix Operation 2.2V DC Range

Models: 5720A

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Theory of Operation 2

Analog Section Detailed Circuit Description

2-92. Switch Matrix Operation: 2.2V DC Range

Refer to Figure 2-11 for the following discussion. The dc 2.2V range circuit consists of the dc 2.2V attenuator and a dc 2.2V range amplifier as outlined on sheet 3 of the Switch Matrix schematic. This circuit contains a CA3096 transistor array IC (U19A-E), transistor Q4, FETs Q12 and Q13, resistors R20, R23-R30, and R32, relays K1 and K2, part of the resistor network 4R07, and a dc amplifier heated hybrid.

The resistor network is bonded to the hybrid and this entire assembly is called the 5700A-4HR1 (HR1) on the schematic. Transistor Q3 drives the heater resistor on the hybrid. The heater control circuit adjusts the base voltage of Q3 to deliver the correct power to the heater resistor to maintain thermal control. Transistor Q8 protects the hybrid in case Q3 fails.

To produce the dc 2.2V range, the DAC assembly (A11) is set to the 11V range. DAC OUT HI and DAC SENSE HI are connected to pin 10 of the resistor network by relay K1, and DAC LO is connected to pin 9 by relay K2. The network divides the voltage by five. The divided voltage from pin 8 is connected to the input (pin 11) of the dc amplifier hybrid.

This temperature-controlled amplifier is used as a buffer amplifier. The output of the buffer amplifier (pin 18) drives the 2.2V range high current output stage consisting of U19, Q4, R25-R30, R32, and CR7-CR9. This circuit enables the 2.2V range to support 50 mA of current with current limiting. FETs Q12 and Q13 provide localized feedback for the precision dc amplifier during unusual conditions, such as a short circuit at the OUTPUT binding posts or when this range is in standby.

Line 2.2V OUT is connected to INT OUT HI through relays K27 and K30 on the Switch Matrix. Line INT OUT HI is connected to the OUTPUT HI binding post through relay K1 on the motherboard. Line 2.2V SENSE is connected to INT SENSE HI through relays K25 and K26 on the Switch Matrix. Motherboard relays K2 and K3 switch INT SENSE HI to the SENSE HI binding post during external sensing, or to OUTPUT/SENSE HI during internal sensing.

Line PA COM is connected to the OUTPUT LO binding post through relays K11 and K10. Switch Matrix relays K14 and K15 connect R COM to the SENSE LO binding post during external sensing, or OUTPUT/SENSE LO during internal sensing.

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Fluke 5720A service manual Switch Matrix Operation 2.2V DC Range

Contents

Multi-Function Calibrator Service Manual5700A/5720A Series 5/94 LIMITED WARRANTY & LIMITATION OF LIABILITYBescheinigung des Herstellers/Importeurs Interference InformationDeclaration of the Manufacturer or Importer 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 SeriesCalibration Procedure Calibration and VerificationOhms Cal Assembly A9 Troubleshooting MaintenanceRear Panel Assembly Access Using Remote Commands Reserved for ServicingList of Replaceable Parts Schematic Diagramsviii Service Manual5700A/5720A Series Page List of TablesTitle 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 ManualPage List of FiguresTitle 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 ManualTitle Introduction and SpecificationsChapter 5700A/5720A Series II Calibrator Service Manual1-1. Introduction 1-3. About this Manual 1-4. How to Use this Manual1-2. Contacting Fluke 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 PN1-8. 5725A Amplifier 1-9. Support Equipment and Services1-7. Auxiliary Amplifiers 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 Process1-19. Calibration Reports 1-20. Calibration Check1-21. Developing a Performance History 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 5700A5700A/5720A Series II Calibrator Service ManualOvershoot 5 % Common mode rejection 140 dB, DC to 400 Hz 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 5700AOvershoot 5 % Introduction and SpecificationsDC Current Specifications 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 ManualTitle Theory of OperationChapter 2-36 Theory of Operation 2-155 2-2. Calibrator Overview 2-1. Introduction2-3. Internal References 2-4. Hybrid Reference Amplifiers2-6. Digital-to-Analog Converter DAC 2-7. Digital Section Overview2-8. Analog Section Overview 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.eps5700/5720A Series II Calibrator Service ManualFigure 2-3. Analog Section Block Diagram, Part 2-11. AC Voltage Functional Description 2-14. AC Current Functional Description 2-12. Wideband AC V Functional Description Option2-13. DC Current Functional Description 2-15. Ohms Functional Description 2-17. Digital Motherboard Assembly A42-16. System Interconnect Detailed Circuit 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.epsFigure 2-4. System Interconnections cont Service Manual5700/5720A Series II Calibrator Connected to Assembly Table 2-1. Analog Motherboard ConnectorsMotherboard Connector 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 Supply2-32. Clock Generation 2-30. CPU Central Processing Unit Assembly A202-31. Power-Up and Reset Circuit ahp004f.eps Figure 2-5. CPU Assembly Block Diagram5700A/5720A Series II Calibrator 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 Memory2-41. Clock/Calendar Circuit 2-39. Electrically-Erasable Programmable Read-Only Memory EEPROM2-40. DUART Dual Universal Asynchronous Receiver/transmitter 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 Circuit2-66. ±PA Supplies Digital Control 2-65. Filter/PA Supply A18, Power Amplifier Output Supply Section2-64. FR2 Supplies ahp005f.eps Figure 2-6. Power Amplifier Output Supply Simplified Schematic5700A/5720A Series II Calibrator 2-68. +PA and -PA Supplies 2-67. ±250V and ±500V Supplies2-69. ±PA Supply Current Limit ∙ PA CT is the center tap2-72. Regulated OSC Supplies 2-70. Regulator/Guard Crossing Assembly A172-71. Voltage Regulator Circuitry 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 Supply2-78. Inguard CPU Memory Map 2-79. Inguard Memory Configuration2-77. Guarded Digital Control Circuitry 2-82. Power-Up and Reset Circuitry 2-81. Inguard Watchdog Timer2-80. Inguard Clock Circuit 2-83. Break Detection2-86. Inguard CPU Interrupts 2-87. Switch Matrix Assembly A82-85. Interface to Guarded Digital Bus 2-88. Switch Matrix Digital Control System Interconnection Detailed Circuit Description Figure 2-7. Switch Matrix Assembly Simplified SchematicTheory of Operation 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.epsahp008f.eps Figure 2-10. Switch Matrix Configuration for 220V DC and AC Ranges5700A/5720A Series II Calibrator 2-92. Switch Matrix Operation 2.2V DC Range ahp009f.eps Figure 2-11. Switch Matrix Configuration for 2.2V DC Range5700A/5720A Series II Calibrator To calibrate the offset 2-94. Switch Matrix Operation 220 mV DC Range2-93. Calibration of the 2.2V Range ahp010f.eps 5700A/5720A Series II CalibratorFigure 2-12. Calibration of the 2.2V DC Range Theory of Operation Figure 2-13. Switch Matrix Configuration for 220 mV DC RangeAnalog Section Detailed Circuit Description ahp011f.eps2-97. Calibration of the mV Ranges 2-95. Switch Matrix Operation 220 mV AC Range2-96. Switch Matrix Operation 2.2 mV and 22 mV AC Ranges Analog Section Detailed Circuit Description Theory of OperationFigure 2-14. V AC, 2.2 mV AC, and 22 mV AC Range ahp012f.epsahp013f.eps 5700A/5720A Series II CalibratorFigure 2-15. Divider Calibration 2-98. Internal CAL Zero Amplifier ahp014f.eps 5700A/5720A Series II CalibratorFigure 2-16. Divider Gain Calibration 2-101. Basic DAC Theory of Operation 2-99. Switch Matrix 5725A Amplifier Interface2-100. DAC Assembly A11 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.epsProgrammable Peripheral Interface IC U31 is the heart of this circuit 2-102. DAC Assembly Digital Control2-103. DAC Assembly Reference Circuitry 2-104. Duty-Cycle Control Circuit REFCOM 2-105. DAC Filter Circuit2-106. DAC Output Stage 2-108. Linearity Control Circuit 2-107. Sense Current Cancellation Circuit2-111. DAC Buffered Reference Sip 2-110. DAC Output Switching2-109. Negative Offset Circuit 2-114. ADC Input Selection 2-112. Calibration Hardware2-113. ADC Amplifier ∙ 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.epsINPUT 2-117. DAC Assembly Calibration2-116. How the DAC is Used in Calibration 2-118. Oscillator Section Overview 2-119. Oscillator Control Assembly A122-120. Oscillator Control Digital Control 2-121. Oscillator Input Switching2-122. Sense Current Cancellation 2-123. Averaging Converter 2-124. Error Integrator2-125. Three-Pole Filter 2-126. Analog Amplitude Control Loopahp017f.eps 5700A/5720A Series II CalibratorFigure 2-19. Oscillator Control Analog Control Loop 2-127. AC/DC Thermal Transfer Circuit ahp018f.eps 5700A/5720A Series II CalibratorFigure 2-20. AC/DC Thermal Transfer Circuit 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 A13A12-137. Output Stage 2-138. Phase Shifter2-139. Power Amplifier Assembly A16 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 Stage2-148. PA Operation 220V DC Range 2-146. PA Sense Current Cancellation Circuitry2-147. PA in Standby ahp020f.eps Figure 2-22. Power Amplifier Simplified Schematic5700A/5720A Series II Calibrator 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.eps2-159. HV DC Output Series Pass and Current Limit Circuit 2-158. HVDC Power Supply Filter Circuit2-157. 1100V DC Range 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 Functionahp026f.eps Theory of OperationAnalog Section Detailed Circuit Description 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 Circuitahp027f.eps Figure 2-32. Two-Wire Lead Drop Compensation Circuit5700A/5720A Series II Calibrator 2-178. High Side Cancellation 2-177. Two-Wire Compensation Power Supplies2-179. Low Side Cancellation 2-180. Ohms Calibrationahp028f.eps 5700A/5720A Series II CalibratorFigure 2-33. Calibration to an External 10 kΩ Standard 2-181. Calibrating to the External 10 KW Standard 2-184. Completion of High Resistance Value Calibration 2-182. Calibrating 10 KW and 19 KW2-183. Calibrating 100 KW 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 ahp029f.eps 5700A/5720A Series II CalibratorFigure 2-34. Ratio Calibration, 10 Ω From 100 Ω 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.eps2-191. Shunt Resistors 2-189. Complementary Drive Circuit2-190. Transconductance Amplifiers 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 Loop2-202. 5-500k Output Divider 2-203. Hi-Res Output Switching2-204. Rear Panel Assembly A21 ∙ RPDUARTCS*, D00000-D0001F ∙ RPIEEECS*, D00020-D0002F 2-205. Rear Panel Power Supplies2-206. Rear Panel Address Mapping 2-209. RS-232C Interface 2-207. Clock Regeneration Circuit2-208. IEEE-488 GPIB Interface 2-211. 5725A Interface 2-212. Phase Lock In/Variable Phase out2-210. Auxiliary Amplifier Interface Port A PA0-PA7 provides the input lines for relay driver U16 2-213. Rear Panel Relay Control2-214. Rear Panel CPU Interface 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 2-226. Wideband Output Overload Control Circuit 2-224. Wideband Output Attenuators2-225. Wideband Output RMS Sensor and Amplitude 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 ManualTitle Calibration and VerificationChapter 3-30 Calibration and Verification 3-1. Introduction3-2. Accessing the Fuse Cleaning the Air Filter 3-3. Cleaning the Air Filter3-6. Calibrating the 5700A/5720A Series II to External Standards 3-4. Cleaning the Exterior3-5. Calibration Calibrating the 5700A/5720A Series II to External Standards 3-8. When to Adjust the Calibrator’s Uncertainty Specifications3-7. Calibration Requirements 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 StandardsIF3-7.EPS IF3-5.EPSIF3-6.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 3-15. Metal Film Resistor in Test Circuit 3-25. Rationale for Using Metal-Film Resistors to Measure AC CurrentFigure 3-14. Metal Film Resistor Equivalent 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 TestsOptional Tests 3-33. DC Voltage Linearity Test3-34. DC Voltage Output Noise 10 Hz to 10 kHz Test 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 OutputFluke Corporation A Message Fromstatic awareness 5. USE STATIC SHIELDING CONTAINERS FOR HANDLING AND TRANSPORT Title MaintenanceChapter 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 InstallationFRONT PANEL 5700A/5720A Series II CalibratorFigure 4-5. Analog and Digital Assemblies 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 4-20. Clearing Ghost Images from the Control Display 4-19. Installing a Wideband AC Module Option4-21. Replacing the Clock/Calendar Backup Battery 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 ManualTitle TroubleshootingChapter 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 Fault5-4. Troubleshooting the Wideband Output Assembly A5 5-3. Component-level Troubleshooting3923 A5 8255 Was Reset 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 toF5-19.EPS 5700A/5720A Series II CalibratorFigure 5-19. Waveform at TP4, Calibrator Set to 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.epsList of Replaceable Parts Service CentersTable 6-1. Chassis Final Assembly 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 PCADesignator 5700A/5720A Series II CalibratorTable 6-3. A2 Front Panel PCA Table 6-3. A2 Front Panel PCA cont Service CentersList of Replaceable Parts 5700A-1602 5700A/5720A Series II CalibratorFigure 6-5. A2 Front Panel PCA 57001602.EPSTable 6-4. A3 Analog Motherboard PCA Service CentersList of Replaceable Parts Figure 6-6. A3 Analog Motherboard PCA 5700A/5720A Series II Calibrator5700A-1601 Table 6-5. A4 Digital Motherboard PCA Service CentersList of Replaceable Parts 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.EPSTable 6-7. A6 Wideband Ocillator PCA, Option Service CentersList of Replaceable Parts 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.EPSTable 6-8. A7 Current/High-Res Oscillator PCA Service CentersList of Replaceable Parts 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 CalibratorTable 6-10. A9 Ohms Cal PCA cont Service CentersList of Replaceable Parts 5700A-1631 5700A/5720A Series II CalibratorFigure 6-12. A9 Ohms Cal PCA 57001631.EPSTable 6-11. A10 Ohms Main PCA Service CentersList of Replaceable Parts 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 CalibratorTable 6-12. A11 DAC PCA cont Service CentersList of Replaceable Parts VR13 VR18,VR22 VR25 VR26 VR27 VR28 VR29 VR33,VR34 X1 Z2 Z4 Z5 Z8 Z10 5700A/5720A Series II CalibratorTable 6-12. A11 DAC PCA cont 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 StockDesignator 5700A/5720A Series II CalibratorTable 6-15. A12 Oscillator Control PCA cont List of Replaceable Parts Service Centers5700A-1650 Figure 6-17. A12 Oscillator Control PCATable 6-16. A13 Oscillator Output PCA 5700A/5720A Series II CalibratorTable 6-16. A13 Oscillator Output PCA cont Service CentersList of Replaceable Parts 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 PCADesignator 5700A/5720A Series II CalibratorTable 6-17. A13A1 Oscillator Wideband SMD PCA 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 CalibratorTable 6-18. A14 High Voltage Control PCA cont Service CentersList of Replaceable Parts 5700A-1661 5700A/5720A Series II CalibratorFigure 6-20. A14 High Voltage Control PCA 57001661.EPSTable 6-19. A15 High Voltage/High Current PCA Service CentersList of Replaceable Parts 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 CalibratorTable 6-22. A17 Regulator/Guard Crossing PCA cont Service CentersList of Replaceable Parts 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,CR13Stock 5700A/5720A Series II CalibratorTable 6-23. A18 Filter/PA Supply PCA cont 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 Des57001606.EPS 5700A/5720A Series II CalibratorFigure 6-27. A20 CPU PCA Table 6-27. A21 Rear Panel PCA Service CentersList of Replaceable Parts 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 DiagramsFigure 7-1. A1 Keyboard PCA cont Service Manual5700A/5720A Series Figure 7-2. A2 Front Panel PCA Schematic DiagramsFigure 7-2. A2 Front Panel PCA cont Service Manual5700A/5720A Series Figure 7-2. A2 Front Panel PCA cont Schematic DiagramsFigure 7-2. A2 Front Panel PCA cont Service Manual5700A/5720A Series Figure 7-2. A2 Front Panel PCA cont Schematic DiagramsFigure 7-3. A3 Analog Motherboard PCA Service Manual5700A/5720A Series Figure 7-23. A3 Analog Motherboard PCA cont Schematic DiagramsFigure 7-3. A3 Analog Motherboard PCA cont Service Manual5700A/5720A Series Figure 7-3. A3 Analog Motherboard PCA cont Schematic DiagramsFigure 7-3. A3 Analog Motherboard PCA cont Service Manual5700A/5720A Series Figure 7-4. A4 Digital Motherboard PCA Schematic DiagramsFigure 7-4. A4 Digital Motherboard PCA cont Service Manual5700A/5720A Series ahp46f.tif Schematic DiagramsFigure 7-4. A4 Digital Motherboard PCA cont Figure 7-4. A4 Digital Motherboard PCA cont Service Manual5700A/5720A Series Figure 7-5. A5 Wideband Output PCA Option Schematic Diagrams5700A-1611 Figure 7-5. A5 Wideband Output PCA Option -03 cont Service Manual5700A/5720A Series Figure 7-5. A5 Wideband Output PCA Option -03 cont Schematic DiagramsFigure 7-5. A5 Wideband Output PCA Option -03 cont Service Manual5700A/5720A Series 7-23 Schematic Diagrams5700A-7610 Figure 7-6. A6 Wideband Oscillator PCA OptionFigure 7-6. A6 Wideband Output PCA Option Service Manual5700A/5720A Series Figure 7-6. A6 Wideband Oscillator PCA Option -03 cont Schematic DiagramsFigure 7-6. A6 Wideband Oscillator PCA Option -03 cont Service Manual5700A/5720A Series 5700A-1621 Schematic DiagramsFigure 7-7. A7 Current/High-Resolution Oscillator PCA 5700A/5720A Series Service ManualFigure 7-7. A7 Current/High-Resolution Oscillator PCA cont Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-7. A7 Current/High-Resolution Oscillator PCA cont 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 Diagrams5700A/5720A Series Service ManualFigure 7-8. A8 Switch Matrix PCA cont Figure 7-8. A8 Swith Matrix PCA cont Schematic Diagrams5700A/5720A Series Service ManualFigure 7-8. A8 Switch Matrix PCA cont 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 DiagramsFigure 7-9. A9 Ohms Cal PCA cont Service Manual5700A/5720A Series Figure 7-9. A9 Ohms Cal PCA cont Schematic DiagramsFigure 7-9. A9 Ohms Cal PCA cont Service Manual5700A/5720A Series Figure 7-10. A10 Ohms Main PCA Schematic DiagramsFigure 7-10. A10 Ohms Main PCA cont Service Manual5700A/5720A Series Figure 7-10. A10 Ohms Main PCA Schematic DiagramsFigure 7-10. A10 Ohms Main PCA cont Service Manual5700A/5720A Series 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 DiagramsFigure 7-11. A11 DAC PCA cont Service Manual5700A/5720A Series Figure 7-12. A11A1 DAC Filter SIP PCA Schematic DiagramsFigure 7-13. A1142 DAC Buffered Reference SIP PCA Service Manual5700A/5720A Series Figure 7-14. A12 Oscillator Control PCA cont Schematic Diagrams5700A-7650 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 DiagramsFigure 7-15. A13 Oscillator Output PCA cont Service Manual5700A/5720A Series Figure 7-15. A13 Oscillator Output PCA cont Schematic DiagramsFigure 7-15. A13 Oscillator Output PCA cont Service Manual5700A/5720A Series Figure 7-16. A13A1 Oscillator Wideband SMD PCA Schematic DiagramsFigure 7-16. A13A1 Oscillator Wideband SMD PCA cont Service Manual5700A/5720A Series 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 DiagramsFigure 7-17. A14 High Voltage Control PCA cont Service Manual5700A/5720A Series 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 DiagramsFigure 7-18. A15 High Voltage/High Current PCA cont Service Manual5700A/5720A Series 5700A-7670 Schematic DiagramsFigure 7-19. A16 Power Amplifier PCA Figure 7-19. A16 Power Amplifier PCA cont Service Manual4. NOT INSTALLED 5700A/5720A Series10 M 2N4044 Schematic DiagramsFigure 7-19. A16 Power Amplifier PCA cont 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 7-80Figure 7-21. A17 Regulator/Guard Crossing PCA Schematic Diagrams5700A-1680 Figure 7-21. A17 Regulator/Guard Crossing PCA cont Service Manual5700A/5720A Series 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 DiagramsFigure 7-22. A18 Filter/PA Supply PCA cont Service Manual5700A/5720A Series Figure 7-23. A19 Digital Power Supply PCA Schematic Diagrams5700A/5720A Series Service ManualFigure 7-23. A19 Digital Power Supply PCA cont Figure 7-24. A20 CPU PCA Schematic DiagramsFigure 7-24. A20 CPU PCA cont Service Manual5700A/5720A Series Figure 7-24. A20 CPU PCA cont Schematic DiagramsFigure 7-24. A20 CPU PCA cont Service Manual5700A/5720A Series Figure 7-24. A20 CPU PCA cont Schematic DiagramsFigure 7-24. A20 CPU PCA cont Service Manual5700A/5720A Series Figure 7-25. A21 Real Panel PCA Schematic DiagramsFigure 7-25. A21 Rear Panel PCA cont Service Manual5700A/5720A Series Figure 7-25. A21 Rear Panel PCA cont Schematic DiagramsFigure 7-25. A21 Rear Panel PCA cont Service Manual5700A/5720A Series Figure 7-25. A21 Rear Panel PCA cont Schematic DiagramsFigure 7-25. A21 Rear Panel PCA cont Service Manual5700A/5720A Series Figure 7-26. Hybrids Schematic DiagramsFigure 7-26. Hybrids cont Service Manual5700A/5720A Series Figure 7-26. Hybrids cont Schematic DiagramsFigure 7-26. Hybrids cont Service Manual5700A/5720A Series Figure 7-26. Hybrids cont Schematic Diagrams5700A/5720A Series Service Manual