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Fluke 5720A service manual Resistance Standard, Calibrator, F7-4.EPS, IF3-12.EPS

Models: 5720A

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5700A/5720A Series II Calibrator

Service Manual

RESISTANCE STANDARD		CALIBRATOR
RESISTANCE STANDARD
CURRENT	SENSE	OUTPUT	SENSE
CURRENT	SENSE	VΩA	VΩ
		VΩA	VΩ
HI	HI	HI	HI WIDEBAND
LO	LO
LO		LO	LO
		LO	LO
		HI
	CHASSIS	AUX	GUARD GROUND
	GROUND	CURRENT

F7-4.EPS

Figure 3-4. 742A-1 and 742A-10k External Calibration Connections

10.To reject the changes, return to the calibration menu shown in step 2 by pressing P. Otherwise, press the softkey under “Proceed” to accept and save the changes, and to open the display shown below, letting you continue with calibration.

IF3-12.EPS

3-12

Page 218

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Fluke 5720A Resistance Standard, Calibrator, 4. 742A-1 and 742A-10k External Calibration Connections, F7-4.EPS, IF3-12.EPS

Contents

Multi-Function Calibrator Service Manual5700A/5720A Series LIMITED WARRANTY & LIMITATION OF LIABILITY 5/94Bescheinigung des Herstellers/Importeurs Interference InformationDeclaration of the Manufacturer or Importer Page LETHAL VOLTAGE OPERATOR SAFETY SUMMARYHIGH VOLTAGE Terms in this ManualUse the Proper Power Cord Symbols Marked on EquipmentPower Source Use the Proper FuseDo Not Service Alone SERVICING SAFETY SUMMARYFOR QUALIFIED SERVICE PERSONNEL ONLY Use Care When Servicing With Power OnGet Help FIRST AID FOR ELECTRIC SHOCKFree the Victim From the Live Conductor Never Accept Ordinary and General Tests for DeathTitle Table of ContentsIntroduction and Specifications Page5700A/5720A Series Theory of Operation±PA Supplies Digital Control 5700A/5720A Series How the DAC is Used in CalibrationCalibration Procedure Calibration and VerificationOhms Cal Assembly A9 Rear Panel Assembly Access MaintenanceTroubleshooting Using Remote Commands Reserved for ServicingSchematic Diagrams List of Replaceable Partsviii Service Manual5700A/5720A Series Page List of TablesTitle Unregulated Supplies from the Filter Assembly 5700A/5720A SeriesA11A2 DAC Buffered Reference SIP PCA A16A1 Power Amplifier Digital Control SIP PCATest Record for Flatness Check of the AC 2 mV Range A13A1 Oscillator Wideband SMD PCAService Manual 5700A/5720A SeriesPage List of FiguresTitle Ohms Main Assembly Simplified Schematic 5700A/5720A SeriesA13A1 Oscillator Wideband SMD PCA Power Amplifier with Calibrator Set to 22V at 1 kHzA16A1 Power Amplifier Digital Control SIP PCA A15 High Voltage/High Current PCAService Manual 5700A/5720A SeriesTitle Introduction and SpecificationsChapter Service Manual 5700A/5720A Series II Calibrator1-1. Introduction 1-3. About this Manual 1-4. How to Use this Manual1-2. Contacting Fluke ∙ 5700A/5720A Series II Getting Started Manual PN 1-5. Additional Instruction Manuals1-6. Wideband AC Voltage Module Option 5700A-03 ∙ 5700A/5720A Series II Operator Reference Guide PN1-8. 5725A Amplifier 1-9. Support Equipment and Services1-7. Auxiliary Amplifiers 1-12. 742A Series Resistance Standards 1-11. 732B-200 Direct Volt Maintenance Program U.S.A. Only1-10. 732B Direct Voltage Reference Standard 1-13. Wideband AC Module Option 5700A-03 Calibration Support1-14. Service Centers 1-15. The Components of the 5700A/5720A Series II Calibrator1-16. Calibrating the 5700A/5720A Series II Calibrator Calibrating the 5700A/5720A Series II Calibrator1-17. The Calibration Process 1-18. Establishing Traceability1-19. Calibration Reports 1-20. Calibration Check1-21. Developing a Performance History 1-26. Using Absolute and Relative Uncertainty Specifications 1-24. Specifications1-25. Specification Confidence Levels 1-22. Range Calibration1-27. Using Secondary Performance Specifications Specifications5700A/5720A Series II Calibrator 1-28. DC Voltage SpecificationsService Manual 5720A5700A Introduction and SpecificationsDC Voltage Specifications 5700A5700A/5720A Series II Calibrator Service ManualOvershoot 5 % Common mode rejection 140 dB, DC to 400 Hz AC Voltage Specifications 1-29. AC Voltage SpecificationsIntroduction and Specifications 5720A5720A Service Manual5700A/5720A Series II Calibrator 95 % Confidence Level± 5 C from calibration temperature Introduction and SpecificationsAC Voltage Specifications 5700A5700A Service Manual5700A/5720A Series II Calibrator 95% Confidence Level± ppm output + μV Introduction and SpecificationsAC Voltage Specifications 0-10 C and5725A Amplifier Service Manual5700A/5720A Series II Calibrator Figure 1-2. Volt-Hertz CapabilityResistance Specifications 1-30. Resistance SpecificationsIntroduction and Specifications 5720A5700A Service Manual5700A/5720A Series II Calibrator 5700A±1 C Note Introduction and SpecificationsResistance Specifications CharacterizedTable 1-13. Current Derating Factors Service Manual5700A/5720A Series II Calibrator I ILDC Current Specifications 1-31. DC Current SpecificationsIntroduction and Specifications 5720A 99%5700A Service Manual5700A/5720A Series II Calibrator 5700AOvershoot 5 % Introduction and SpecificationsDC Current Specifications 5700A/5720A Series II Calibrator 1-32. AC Current SpecificationsService Manual 5720A 99%5720A 95% Introduction and SpecificationsAC Current Specifications 95 % Confidence Level5700A Service Manual5700A/5720A Series II Calibrator 99 % Confidence Level5700A Introduction and SpecificationsAC Current Specifications 95 % Confidence Level5700A/5720A Series II Calibrator Service ManualTemperature Coefficient Note ± ppm output + nAWideband AC Voltage Option 5700-03 Specifications 1-33. Wideband AC Voltage Option 5700-03 SpecificationsIntroduction and Specifications Table 1-22. Wideband AC Voltage Option 5700-03 Specifications5700A/5720A Series II Calibrator 1-34. General SpecificationsService Manual Guard isolation 20Auxiliary Amplifier Specifications 1-35. Auxiliary Amplifier SpecificationsIntroduction and Specifications 5220A AC Current, 180-day specificationsService Manual 5700A/5720A Series II CalibratorTitle Theory of OperationChapter 2-36 Theory of Operation 2-155 2-3. Internal References 2-1. Introduction2-2. Calibrator Overview 2-4. Hybrid Reference Amplifiers2-6. Digital-to-Analog Converter DAC 2-7. Digital Section Overview2-8. Analog Section Overview Analog Section Overview Figure 2-1. Digital Section Block DiagramTheory of Operation ahp003f.eps2-9. Functional Description Presented by Output Function 2-10. DC Voltage Functional DescriptionTheory 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 2-18. Transformer Assembly A22 2-19. Analog Motherboard Assembly A3Figure 2-4. System Interconnections Theory of OperationFunctional Description Presented by 0utput Function ahp35f.epsFigure 2-4. System Interconnections cont Service Manual5700/5720A Series II Calibrator Connected to Assembly Table 2-1. Analog Motherboard ConnectorsMotherboard Connector 2-24. Digital Power Supply Assembly A19 2-21. Rear Panel Assembly A212-22. Filter PA Supply Assembly A18 2-23. Digital Section Detailed Circuit Description2-27. +35V Power Supply 2-25. +5V Power Supply2-26. ±12V Power Supplies Digital Section Detailed Circuit Description2-28. +75V Power Supply 2-29. +35V and +75V Shut-Down Circuit2-32. 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 Digital Section Detailed Circuit Description Signal NameTheory of Operation Table 2-3. CPU Acronym GlossaryTable 2-4. CPU Memory Map 2-33. Watchdog Timer2-34. Address Decoding and DTACK Data Acknowledge Chip Select2-36. Glue Logic 2-37. RAM Random-Access Memory2-35. Interrupt Controller 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 2-44. CPU to Front Panel Interface 2-42. Clock Filter Circuit2-43. CPU to Rear Panel Interface 2-45. Fan Monitor2-48. Refresh Failure Detect Circuitry 2-46. Front Panel Assembly A22-47. Clock Regeneration Circuitry 2-49. Decoding and Timing Circuitry2-50. Control Display Circuitry êêêêêêê2-51. Output Display Circuitry 2-52. Keyboard Scanner Circuitry 2-53. Knob Encoder Circuitry2-55. Keyboard Assembly A1 2-54. Led Circuitry2-56. Analog Section Detailed Circuit Description 2-57. Filter/PA Supply A18, Low-voltage Filter/Regulator Section2-60. Unregulated S Supplies 2-58. Unregulated OSC Supplies2-59. Unregulated LH 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 2-69. ±PA Supply Current Limit 2-67. ±250V and ±500V Supplies2-68. +PA and -PA Supplies ∙ PA CT is the center tap2-72. Regulated OSC Supplies 2-70. Regulator/Guard Crossing Assembly A172-71. Voltage Regulator Circuitry +15 OSC -15 OSC +5RLH +5LH -5LH +44S -44S +17S -17S 15S +30FR1 +30FR2 2-73. Regulated LH Supplies2-74. Regulated S Supplies +15V +5.975V +5.1V +44.15V +17.000V -17.000V +30.96V +30.96V2-75. FR1 Supply 2-76. FR2 Supply2-78. Inguard CPU Memory Map 2-79. Inguard Memory Configuration2-77. Guarded Digital Control Circuitry 2-80. Inguard Clock Circuit 2-81. Inguard Watchdog Timer2-82. Power-Up and Reset Circuitry 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 2-89. Switch Matrix Operation 11V DC and 22V DC Ranges 3. Apply 7V to the relay coils by setting PC5 highAnalog Section Detailed Circuit Description Figure 2-8. Switch Matrix Configuration for 11V DC and 22V DC RangesTheory of Operation ahp006f.eps2-90. Switch Matrix Operation 2.2V AC and 22V AC Ranges 2-91. Switch Matrix Operation 220V AC and DC RangesAnalog Section Detailed Circuit Description Figure 2-9. Switch Matrix Configuration for 2.2V and 22V AC RangesTheory of Operation 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 Analog Section Detailed Circuit Description Figure 2-13. Switch Matrix Configuration for 220 mV DC RangeTheory of Operation 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 Figure 2-14. V AC, 2.2 mV AC, and 22 mV AC Range Theory of OperationAnalog Section Detailed Circuit Description 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 = Analog Section Detailed Circuit Description Figure 2-17. DAC Assembly Simplified SchematicTheory of Operation 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 2-107. Sense Current Cancellation Circuit 2-108. Linearity Control 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 2-115. ADC Circuit ∙ ADC reference voltage ∙ ADC dac ∙ ADC comparator/amplifierFigure 2-18. ADC Circuit Measurement Functions Theory of OperationAnalog Section Detailed Circuit Description ahp016f.epsINPUT 2-117. DAC Assembly Calibration2-116. How the DAC is Used in Calibration 2-119. Oscillator Control Assembly A12 2-118. Oscillator Section Overview2-120. Oscillator Control Digital Control 2-121. Oscillator Input Switching2-122. Sense Current Cancellation 2-125. Three-Pole Filter 2-124. Error Integrator2-123. Averaging Converter 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 2-130. Oscillator Output Assembly A13 2-129. AC/DC Frequency Response CharacterizationFigure 2-21. Quadrature RC Oscillator Circuit Theory of OperationAnalog Section Detailed Circuit Description ahp019f.eps2-131. Oscillator Output Digital Control 2-132. Quadrature RC Oscillator2-134. Phase−locked Loop 2-133. Oscillator Amplitude Control2-136. Oscillator Wideband Smd Assembly A13A1 2-135. 2.2V and 22V Range Output Amplifier2-137. Output Stage 2-138. Phase Shifter2-139. Power Amplifier Assembly A16 2-140. Power Amplifier Digital Control Sip Assembly A16A1 1. Write the proper data for these relays to port A of the 82C55 U112-143. PA Input Stage 2-141. PA Common Circuitry2-142. +PA and -PA Supplies ∙ ±185V ∙ ±365V2-144. PA Mid Stage 2-145. PA Output 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 2-151. High Voltage AC 1100V Range 2-150. High Voltage Assembly Support Mode2-149. PA Operation 220V AC Range 2-152. High Voltage DC 1100V Range and Current 2.2A Range2-153. 220V DC Internal Calibration Network 2-154. PA CalibrationAnalog Section Detailed Circuit Description Figure 2-23. Power Amplifier DC Calibration NetworkTheory of Operation 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 Analog Section Detailed Circuit Description Figure 2-24. Power Amplifier Calibration AC AttenuatorTheory of Operation f2-24.eps2-155. High Voltage Assemblies A14 and A15 2-156. 1100V AC RangeAnalog Section Detailed Circuit Description Figure 2-25. High Voltage/High Current Assembly 1100V AC RangeTheory of Operation ahp022f.eps2-159. HV DC Output Series Pass and Current Limit Circuit 2-158. HVDC Power Supply Filter Circuit2-157. 1100V DC Range Analog Section Detailed Circuit Description Figure 2-26. High Voltage/High Current Assembly 1100V DC RangeTheory of Operation ahp023f.eps2-160. DC HV Amplifier/AC Sense Buffer 2-161. 2.2A RangeAnalog Section Detailed Circuit Description Figure 2-27. High Voltage/High Current Assembly 2.2A AC and DC RangesTheory of Operation ahp024f.eps2-162. 2.2A Power Supply Filter Circuit 2-163. High Voltage Digital Control 2-164. High Voltage Calibration 2-165. Calibration of the AC FunctionAnalog Section Detailed Circuit Description Figure 2-28. High Voltage/High Current Assembly CalibrationTheory of Operation ahp025f.eps2-166. Calibration of the Current Function 2-167. High Voltage Magnitude Controlahp026f.eps Theory of OperationAnalog Section Detailed Circuit Description 2-168. Ohms Overview 2-169. Ohms Main Assembly A10 2-170. Selection of Resistance Values5700/5720A Series II Calibrator Service ManualFigure 2-30. Ohms Assemblies Simplified Schematic ahp38f.epsAnalog Selection Detailed Circuit Description Figure 2-31. Ohms Main Assembly Simplified SchematicTheory of Operation ahp39f.eps2-172. Ohms Digital Control 2-171. Ohms Main Assembly Support of Current Function Calibration2-173. Ohms Cal Assembly A9 2-174. Ohms CAL Digital Control2-176. Two-Wire Ohmmeter Compensation Circuit 2-175. 1, 1.9, and Short Resistanceahp027f.eps Figure 2-32. Two-Wire Lead Drop Compensation Circuit5700A/5720A Series II Calibrator 2-179. Low Side Cancellation 2-177. Two-Wire Compensation Power Supplies2-178. High 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 2-186. Current/High Resolution Oscillator Assembly Overview A7 2-185. Calibrating to the External 1W Standard2-188. Current Input Switching 2-187. Current SectionAnalog Section Detailed Circuit Description Figure 2-35. Current Output Simplified SchematicTheory of Operation ahp030f.eps2-191. Shunt Resistors 2-189. Complementary Drive Circuit2-190. Transconductance Amplifiers 2-194. Generation of the 2.2A Range 2-193. Current Output Switching2-192. Feedback Loop Table 2-15. Relay Settings for Current Range Selection Range2-196. Compliance Limiter 2-198. Current Assembly Calibration2-195. Current Guard Buffer 2-197. Current/Compliance Voltage MonitorAnalog Section Detailed Circuit Description Figure 2-36. Current Assembly CalibrationTheory of Operation ahp031f.eps2-199. High-Resolution Oscillator Section ∙ 10.00 Hz to 119.99 Hz ∙ 0.1200 kHz to 1.1999 kHz2-201. Phase-Locked Loop 2-200. Reference Frequency Amp/Divider2-202. 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 2-215. Wideband AC Module Option 2-216. Wideband Oscillator Assembly A62-217. Wideband Oscillator Power Supplies 2-218. Wideband Oscillator Digital Control2-219. Phase-Locked Loop and Divider Circuit 2-220. Amplitude Control Amplifier and X10 Wideband Amplifier 2-221. Wideband Oscillator Filters2-222. Wideband Output Assembly A5 Figure 2-37 is a simplified schematic for the Wideband Output assemblyAnalog Section Detailed Circuit Description Figure 2-37. Wideband Output Assembly Simplified SchematicTheory of Operation 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 2-227. Wideband Output Digital Control 2-228. Wideband Output Calibrationconnector is connected back to the OUTPUT HI SENSE and OUTPUT LO SENSE binding posts Service Manual 5700A/5720A Series II CalibratorTitle Calibration and VerificationChapter 3-30 3-1. Introduction Calibration and Verification3-2. Accessing the Fuse 3-3. Cleaning the Air Filter 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 Calibration and Verification 4. Enter the ambient temperature then press E. The display shows5. Connect the 732B to the calibrator as shown in Figure Calibrating the 5700A/5720A Series II to External StandardsIF3-7.EPS IF3-5.EPSIF3-6.EPS After a few seconds, the following display appears Figure 3-4. 742A-1 and 742A-10k External Calibration Connections RESISTANCE STANDARDCALIBRATOR 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 PREV MENU IF057.EPS3-11. Calibrating the Wideband AC Module Option 5700A-03 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 3-13. Full Verification Figure 3-7. Overview of Verification Tests3-15. Warm-up Procedure for All Verification Tests 3-14. Required Equipment for All TestsEquipment 5700A/5720A Series II CalibratorTable 3-2. List of Required Equipment for Main Output 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 3-21. AC Voltage Frequency Accuracy Test 3-22. Output Level Tests For AC V RangesUse Table 3-23 5720A or Table 3-24 5700A for the test records 5790A Adjustment Counts 3-23. AC Current Test, 22 mA to 11A RangesTable 3-8. 5790A Adjustment Counts Calibration and Verification1. Connect the equipment as shown in Figure 3-12A use the 2A shunt B. Alternating Current Test Setup, 10A Using 5790A Input Figure 3-12. Alternating Current Test SetupA. Alternating Current Test Setup, 22 mA to 2A Using 5790A Input Calibration and VerificationMetal Film Resistor Mounted on Dual Banana Plug 200 3-24. AC Current Test, 2 mA and 200 μA RangesHi Output Lo 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 3-26. Wideband Frequency Accuracy Test 3-27. Wideband AC Voltage Module Output Verification3-28. Wideband Output Accuracy at 1 kHz Test Wideband Output Accuracy at 1 kHz Test3-29. Wideband Output Flatness Test 3-30. Wideband Flatness Calibration Procedure 3-31. Optional Tests 3-32. DC Voltage Load Regulation TestOptional 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 3-36. AC Voltage Distortion Test 3-37. Wideband Distortion Testing3-35. DC Voltage Output Noise 0.1 to 10 Hz Test WWarning3-39. Minimum Use Requirements 3-38. AC Voltage Overshoot TestMinimum Use Requirements Minimum Use SpecificationsCalibration and Verification 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 Voltage DMM Error1Ω Std Res Value Measured 1Ω Std VoltageStd Res Value DMM ErrorTable 3-16. 5720A Resistance Test Record cont DMM Std Res Rdg1Ω Std Res Value DMM ErrorTable 3-17. 5700A Resistance Test Record 1Ω Std VoltageStd Res Value DMM ErrorTable 3-17. 5700A Resistance Test Record cont Max DMM Std Res RdgTable 3-18. DC Voltage Test Record for 5720A Divider Setting5700A/5720A Series II Calibrator 5720A RangeDetermining Test Limits for Other Calibration Intervals Divider SettingCalibration and Verification Table 3-19. DC Voltage Test Record for 5700AError A+B UUT ErrorSetting 5700A/5720A Series II CalibratorSetting UUT ErrorError A+B Calibration and VerificationTable 3-23. 5720A AC Voltage Output Test Record Error Display Reading5700A/5720A Series II Calibrator OutputDetermining Test Limits for Other Calibration Intervals ErrorCalibration and Verification Output LevelTable 3-24. 5700A AC Voltage Output Test Record Error Display Reading5700A/5720A Series II Calibrator OutputCalibration and Verification ErrorError Display Reading Determining Test Limits for Other Calibration Intervals5700A/5720A Series II Calibrator UUT Error DisplayCalculated Error Table 3-26. 5720A AC Current 20 mA to 10A Accuracy Test RecordCalibration and Verification UUT Error DisplayCalculated Error Determining Test Limits for Other Calibration Intervals5700A/5720A Series II Calibrator ErrorError Table 3-28. 5720A AC Current 2 mA and 200 μA Accuracy Test RecordTable 3-30. Wideband Frequency Accuracy Test Record Calibration and VerificationDetermining Test Limits for Other Calibration Intervals Frequency Hz5700A/5720A Series II Calibrator Measured ErrorMeasured Flatness Error Table 3-31. Wideband Accuracy at 1 kHz Test RecordDetermining Test Limits for Other Calibration Intervals Measured Flatness ErrorCalibration and Verification Table 3-32. Wideband Flatness Test Record contFlatness Error ppm Table 3-33. Wideband Absolute Error 10 Hz to 500 kHz1 kHz Absolute Error ppm Error Sum ppmCalibration and Verification Div. SettingKelvin-Varley Setting Determining Test Limits for Other Calibration IntervalsTable 3-37. AC V Distortion Test Summary UUT Error Display Reading5700A/5720A Series II Calibrator 5700A/5720A Series II OutputFluke Corporation A Message Fromstatic awareness 5. USE STATIC SHIELDING CONTAINERS FOR HANDLING AND TRANSPORT Title MaintenanceChapter Service Manual 5700A/5720A Series II Calibrator4-2. Cleaning the Air Filter 4-1. Introduction4-5. Access Procedures 4-3. General Cleaning4-4. Cleaning PCA’s 4-9. Rear Panel Removal and Installation4-10. Rear Panel Assembly Access 4-11. Front Panel Removal and Installation 4-12. Display Assembly Removal and Installation4-13. Keyboard Assembly Removal and Installation 4-14. Analog Assembly Removal and InstallationFRONT PANEL 5700A/5720A Series II CalibratorFigure 4-5. Analog and Digital Assemblies 4-16. Power Transformer Removal and Installation 4-18. Front/Rear Binding Post Reconfiguration4-15. Digital Assembly 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 Using The Fatality? and Fatalclr Commands 4-22. Using Remote Commands Reserved for Servicing4-23. Using the ETIME Command ETIMEResponse FATALITY?FATLCLR? DescriptionService Manual 5700A/5720A Series II CalibratorTitle TroubleshootingChapter Service Manual 5700A/5720A Series II Calibrator2702 A7 8255 Port B Fault 5-2. Interpreting Diagnostic Fault Codes2701 A7 8255 Port a Fault 2703 A7 8255 Port C Fault2707 A7 Hardware Initialization Fault 2705 A7 Oven Regulation Fault2706 A7 Current Compliance Fault 2709 A7 Current Magnitude Fault2713 A7 Hi-Res Loop In 100Hz Range 2718 Fault In Setting Up AC For Diagnostics2719 A7 8255 Was Reset 2714 A7 Hi-res Loop In 1kHz Range2803 A11 8254 Status Words 2801 A11 8255 Port a Wires2802 A11 8255 Port B Data Bus 2804 A11 DAC Heaters Not Regulated2810 A11 +11V DC Range Fault 2808 A11 ADC Amp Gain Error2809 A11 DAC Monitoring Fault 2811 A11 -11V DC Range Fault2817 A11 13V Reference Fault 2815 A11 6.5V Reference Fault2816 A11 13V Buffered Reference Fault 2818 Assembly A11 Missing3101 A14 8255 Port a Fault 2822 A8/A11 -11/22V DC Zero Estimate Fault2826 A11 A/D Overload Fault 3102 A14 8255 Port B Fault3105 A15 HV I Oven Regulation Fault 3103 A14 8255 Port C Fault3104 A15 HV Oven Regulation Fault 3106 A15 DC HV Amp Noise Fault3111 A15 HV +DC High Voltage Output Fault 3109 A15 HV +DC Preamplifier Fault3110 A15 HV +DC Series Pass & Current Fault 3112 A15 HV +DC Ref/error Amplitude Fault3118 A14/A15 HV -DC Current Error Amp Fault 3116 A15 HV -DC Reference/error Amp Fault3117 A14/A15 HV +DC Current Error Amp Fault 3119 A14/A15 HV +DC Current Abs. Value3123 A14/A15 HV AC 1kHz, Preamp Mid 3126 A14/A15 HV AC 100Hz, Preamp Fault3122 A14/A15 HV AC 1kHz, Preamp Lo 3124 A14/A15 HV AC 1kHz, Preamp Hi3130 A14/A15 HV AC 1kHz, Output Hi 3128 A14/A15 HV AC 1kHz, Output Lo3129 A14/A15 HV AC 1kHz, Output Mid 3131 A14/A15 HV AC 100Hz, Output Lo3137 A14/A15/A16 2.2A AC Range Mag. Fault 3135 Assembly A14 Not Responding3136 A14 8255 Was Reset 3134 Spare3140 A14/A15/A16 2.2A AC Range Abs. Value 3301 A9 8255 Port a Fault3302 A9 8255 Port B Fault 3141 A14/A15/A16 2.2A DC Range Dummy Load3305 A9 5V Source Fault 3303 A9 8255 Port C Fault3304 A9 10V Source Fault 3306 A9 2V Source Fault3311 A9/A10 Ohms 101 Divider Fault 3309 A9 Diff Amp Gain Fault3310 A9 Diff Amp Noise Fault 3312 A9/A10 Ohms 11 Divider Fault3317 A9/A10 100 Kilohm Ratio Fault 3315 A9/A10 10 Ohm Cal Diag Fault3316 A9/A10 19 Ohm Cal Diag Fault 3318 A9/A10 190 Kilohm Ratio Fault3325 A9/A10 10 Kilohm Check Fault 3321 A9/A10 10M Ohm Ratio Fault3324 A9/A10 100M Ohm Ratio Fault 3326 A9/A10 19 Kilohm Check Fault3329 A9/A10 100 Ohm Check Fault 3327 A9/A10 1 Kilohm Check Fault3328 A9/A10 1.9 Kilohm Check Fault 3330 A9/A10 190 Ohm Check Fault3336 A9/A10 2 Wire Compensation Fault 3334 A9/A10 1.9 Ohm Check Fault3335 A9/A10 Ohms Short Check Fault 3337 A9/A10 Ohms Correction Factor Fault3401 A12 8255 Port A 3341 A9/A10 190 Ohm Cal Diag Fault3400 A12 8255 Control Word 3402 A12 8255 Port B3410 A12/A13 22V Amp Bias Adj Error 3408 A13 Fixed Ampl. Osc Fault3409 A13 Phase Lock Loop Fault 3412 A12 To A13 Interface Fault3418 A12 Sensor Loop/SQ. Root Amp Fault 3416 A12/A13 DAC 15th Bit Fault3417 A12 DC Sensor Buffer Fault 3414 A12/A13 Nonlinear Control Loop 2vrng3425 Assembly A12 Or A13 Not Responding 3423 Assembly A12 Missing3424 Assembly A13 Missing 3426 A12 8255 Was Reset3503 A16 8255 Port C 3508 A16/A14 220V AC Range Output Fault3510 A16 220V Amp Fault 3504 Spare3512 Spare 3520 A16 PA Oven Regulation Fault3511 A16 Incorrect PA Input 3513 Spare3525 220V DC Initialization Fault 3521 Assembly A16 Is Not Responding3524 A16 Power Amp Is Too Hot 3526 220V AC Initialization Fault3601 -17S Supply Fault 3530 A16 8255 Was Reset3600 +17S Supply Fault 3602 +15S Supply Fault3607 -5lH Supply Fault 3605 -42S Supply Fault3606 LH Com Ground Fault 3608 +5rLH Supply Fault3613 -15 OSC Supply Fault 3611 -PA Supply Fault3612 +15 OSC Supply Fault 3614 OSC Com Ground Fault3702 A21 8255 Port B Fault 3615 S Com Ground Fault3701 A21 8255 Port A Fault 3703 A21 8255 Port C Fault3803 A8 8255 Port C Fault 3801 A8 8255 Port A Fault3802 A8 8255 Port B Fault 3804 A8 Zero Amp Lo Noise Fault3812 A8 2.2V Gain Fault 3813 A8 220mV Offset Fault 3809 A8 Zero Amp Hi Gain Fault3810 A8 2.2V Amp Noise Fault 3811 A8 Zero Amp Offset 3814 A8 220mV Divider Fault 3815 A8 22mV Divider Fault 3816 Spare3826 A8 8255 Was Reset 3824 A8 Oven Regulation Fault3825 Assembly A8 Not Responding 3827 Assembly A8 Too Hot 3900 A5 8255 Control Word3907 A5 Rms Sensor At 10MHz 3905 A6 Phase Lock Loop At 10MHz3906 A6 Phase Lock Loop At 30MHz 3908 A5 Rms Sensor At 30MHz3911 A5/A6 Ampl. Control At 30MHz 3914 A5 0DB Output Attenuation Fault3915 A5 10DB Output Attenuation Fault 3912 A5/A6 Output Offset At 10MHz3918 A5 40DB Output Attenuation Fault 3916 A5 20DB Output Attenuation Fault3917 A5 30DB 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 5-5. Troubleshooting the Wideband Oscillator Assembly A6 All measurements are referenced to SCOM TP16 or TP17 and allFigure 5-2. Waveform at TP1 F5-2.EPSFigure 5-3. Waveform at TP15 F5-3.EPSFigure 5-4. Waveform at Pins 14 and 15 of U1 F5-4.EPS10 ms F5-5.EPS5-6. Troubleshooting the Current/Hi-Res Assembly A7 5-7. Current SectionFigure 5-6. Waveform at Pin 11 of K2 F5-6.EPSK5C, K5D Figure 5-7. Waveform at Pin 6 of K21.2 Ω K10, K13F5-9.EPS F5-10.EPSF5-11.EPS 5-8. Hi-Res Oscillator Section All measurements are referenced to LHCOM TP18Figure 5-13. Waveform at TP12 F5-13.EPS5-9. Troubleshooting the Switch Matrix Assembly A8 Figure 5-15. Waveform at TP16 F5-15.EPS5-10. Troubleshooting the Ohms Cal Assembly A9 5-11. Two-wire Compensation Circuit5-12. Troubleshooting the Ohms Main Assembly A10 5-13. Troubleshooting the DAC Assembly A11 Figure 5-17. Waveform at TP6 TroubleshootingComponent-level Troubleshooting Figure 5-18. Waveform at TP4, Calibrator Set toF5-19.EPS 5700A/5720A Series II CalibratorFigure 5-19. Waveform at TP4, Calibrator Set to Figure 5-20. Waveform at TP7 F5-20.EPSFigure 5-21. Waveform at TP5 F5-21.EPS5-14. Duty-cycle Control Circuit Figure 5-22. Waveform at Pin 10 of U6 F5-22.EPSFigure 5-23. Waveform at Pin 6 of U13 TroubleshootingComponent-level Troubleshooting 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 5-28. Waveform at Pin 6 of U11 5700A/5720A Series II CalibratorFigure 5-27. Waveform at Anode of CR4 F5-27.EPSFigure 5-29. DC Sense Buffer Waveform TP6 F5-29.EPS5-18. Troubleshooting the Oscillator Output Assembly A13 ∙ TP5 positive voltage ∙ TP4 negative voltage ∙ TP3 positive voltage 5-19. Troubleshooting the High Voltage Control Assembly A14 Figure 5-31. Waveform at TP3 F5-31.EPS5-20. 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 5-22. Troubleshooting the Power Amplifier Assembly A16 Figure 5-32. Waveform at Pin 18 of Hybrid H4Figure 5-33. Power Amplifier with Calibrator Set to 22V at 1 kHz AC elsewhere in the Calibrator Remove any jumpers left in place from step 8 before continuing5-23. 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 Service Manual 5700A/5720A Series II CalibratorList of Replaceable Parts ChapterService Manual 5700A/5720A Series II Calibrator6-1. Introduction 6-2. How to Obtain PartsA * symbol indicates a device that may be damaged by static discharge 6-3. Manual Status Information5700A/5720A Series II Calibrator 6-5. Service CentersManual Status Information Assembly Name Ref or Option NoList of Replaceable Parts Service CentersTable 6-1. Front Panel Final Assembly Reference Description Designator5700A-T&B Figure 6-1. Front Panel Final Assembly5700A/5720A Series II Calibrator f6-1.epsList of Replaceable Parts Service CentersTable 6-1. Chassis Final Assembly 5700A T&B Figure 6-2. Chassis Final Assembly5700A/5720A Series II Calibrator 1 ofList of Replaceable Parts Service CentersFigure 6-2. Chassis Final Assembly cont f61a2.epsTable 6-1. Rear Panel Final Assembly 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersFigure 6-3. Rear Panel Final Assembly f61b.epsTable 6-2. A1 Keyboard PCA ISOLATOR,OPTO,OPTICAL SWITCH,INFRARED5700A/5720A Series II Calibrator CR1-4 DT1, DT2 W15700A-1603 Service CentersList of Replaceable Parts 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 Figure 6-5. A2 Front Panel PCA 5700A/5720A Series II Calibrator5700A-1602 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 Figure 6-7. A4 Digital Motherboard PCA 5700A/5720A Series II Calibrator5700A-1605 57001605.EPSTable 6-6. A5 Wideband Output PCA, Option Service CentersList of Replaceable Parts Designator5700A/5720A Series II Calibrator Table 6-6. A5 Wideband Output PCA, Option -03 contTable 6-6. A5 Wideband Output PCA, Option -03 cont Service CentersList of Replaceable Parts R69,R70 R72,R73,R80-83 R74 R75 R78,R79,R86-89 R92-95 R96-99 R100 R101Figure 6-8. A5 Wideband Output PCA, Option 5700A/5720A Series II Calibrator5700A-1611 57001611.EPSTable 6-7. A6 Wideband Ocillator PCA, Option Service CentersList of Replaceable Parts Table 6-7. A6 Wideband Ocillator PCA, Option -03 cont CONNECTOR ,CONN,DIN41612,TYPE C,RT ANG,64 PIN5700A/5720A Series II Calibrator DesignatorTable 6-7. A6 Wideband Ocillator PCA, Option -03 cont Service CentersList of Replaceable Parts R58,R112,R212 R312,R412,R512 R59 R61 R62,R64,R65,R69 R63 R68 R71Figure 6-9. A6 Wideband Oscillator PCA, Option 5700A/5720A Series II Calibrator5700A-1610 57001610.EPSTable 6-8. A7 Current/High-Res Oscillator PCA Service CentersList of Replaceable Parts 5700A/5720A Series II Calibrator Table 6-8. A7 Current/High-Res Oscillator PCA contTable 6-8. A7 Current/High-Res Oscillator PCA cont Service CentersList of Replaceable Parts DesignatorFigure 6-10. A7 Current/HIgh-Res Oscillator PCA 5700A/5720A Series II Calibrator5700A-1621 57001621.EPSList of Replaceable Parts Service CentersTable 6-9. A8 Switch Matrix PCA Reference DesignatorTable 6-9. A8 Switch Matrix PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersFigure 6-11. A8 Switch Matrix PCA 5700A-16225700A/5720A Series II Calibrator Table 6-10. A9 Ohms Cal PCATable 6-10. A9 Ohms Cal PCA cont Service CentersList of Replaceable Parts Figure 6-12. A9 Ohms Cal PCA 5700A/5720A Series II Calibrator5700A-1631 57001631.EPSTable 6-11. A10 Ohms Main PCA Service CentersList of Replaceable Parts Figure 6-13. A10 Ohms Main PCA 5700A/5720A Series II Calibrator5700A-1630 57001630.EPSTable 6-12. A11 DAC PCA Service CentersList of Replaceable Parts C110,C111 CR1,CR3-6,CR8, CR12,CR13 CR25700A/5720A Series II Calibrator Table 6-12. A11 DAC PCA contTable 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 5700A-1640 Service CentersList of Replaceable Parts Figure 6-14. A11 DAC PCA5700A/5720A Series II Calibrator Table 6-13. A11A1 DAC Filter SIP PCA5700A-1643 Service CentersList of Replaceable Parts Figure 6-15. A11A1 DAC Filter SIP PCA5700A/5720A Series II Calibrator Table 6-14. A11A2 DAC Buffered Reference SIP PCA5700A-1644 Service CentersList of Replaceable Parts Figure 6-16. A11A2 DAC Buffered Reference SIP PCA5700A/5720A Series II Calibrator Table 6-15. A12 Oscillator Control PCATable 6-15. A12 Oscillator Control PCA cont Service CentersList of Replaceable Parts StockDesignator 5700A/5720A Series II CalibratorTable 6-15. A12 Oscillator Control PCA cont 5700A-1650 Service CentersList of Replaceable Parts Figure 6-17. A12 Oscillator Control PCA5700A/5720A Series II Calibrator Table 6-16. A13 Oscillator Output PCATable 6-16. A13 Oscillator Output PCA cont Service CentersList of Replaceable Parts 5700A/5720A Series II Calibrator Table 6-16. A13 Oscillator Output PCA cont5700A-1651 Service CentersList of Replaceable Parts Figure 6-18. A13 Oscillator Output PCADesignator 5700A/5720A Series II CalibratorTable 6-17. A13A1 Oscillator Wideband SMD PCA 5700A-1652 Service CentersList of Replaceable Parts Figure 6-19. A13A1 Oscillator Wideband SMD PCA5700A/5720A Series II Calibrator Table 6-18. A14 High Voltage Control PCATable 6-18. A14 High Voltage Control PCA cont Service CentersList of Replaceable Parts Figure 6-20. A14 High Voltage Control PCA 5700A/5720A Series II Calibrator5700A-1661 57001661.EPSTable 6-19. A15 High Voltage/High Current PCA Service CentersList of Replaceable Parts 5700A/5720A Series II Calibrator Table 6-19. A15 High Voltage/High Current PCA cont5700A-1660 Service CentersList of Replaceable Parts Figure 6-21. A15 High Voltage/High Current PCADesignator Table 6-20. A16 Power Amplifier PCA5700A/5720A Series II Calibrator CR20,CR21,CR23List of Replaceable Parts Service CentersTable 6-20. A16 Power Amplifier PCA cont R9,R10,R16,R33, R40,R50 R59, R115,R148 R149 R11,R12Table 6-20. A16 Power Amplifier PCA cont 5700A/5720A Series II Calibrator5700A-7670 Service CentersFigure 6-22. A16 Power Amplifier PCA List of Replaceable PartsTable 6-21. A16A1 Power Amplifier Digital Control SIP PCA 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersFigure 6-23. A16A1 Power Amplifier Digital Control SIP PCA 5700A-16715700A/5720A Series II Calibrator Table 6-22. A17 Regulator/Guard Crossing PCATable 6-22. A17 Regulator/Guard Crossing PCA cont Service CentersList of Replaceable Parts Figure 6-24. A17 Regulator/Guard Crossing PCA 5700A/5720A Series II Calibrator5700A-1680 57001680.EPSTable 6-23. A18 Filter/PA Supply PCA Service CentersList of Replaceable Parts CR1,CR2,CR04, CR5 CR8,CR10, CR12,CR13Stock 5700A/5720A Series II CalibratorTable 6-23. A18 Filter/PA Supply PCA cont Table 6-23. A18 Filter/PA Supply PCA cont Service CentersList of Replaceable Parts VR211,VR217 VR227,VR231 VR212,VR216 VR226,VR232 VR214,VR230Figure 6-25. A18 Filter/PA Supply PCA 5700A/5720A Series II Calibrator5700A-7690 57001690.EPSList of Replaceable Parts Service CentersTable 6-24. A19 Digital Power Supply PCA C24,C25 CR1-4,CR9-12 CR8,CR16, CR21- 24,CR29-34Table 6-24. A19 Digital Power Supply PCA cont 5700A/5720A Series II CalibratorList of Replaceable Parts Service CentersFigure 6-26. A19 Digital Power Supply PCA 5700A-1604Ref Des 5700A/5720A Series II CalibratorTable 6-25. A20 CPU PCA DescriptionTable 6-26. A20 CPU PCA cont Service CentersList of Replaceable Parts 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 5700A/5720A Series II Calibrator Table 6-27. A21 Rear Panel PCA cont5700A-1609 Service CentersList of Replaceable Parts Figure 6-28. A21 Rear Panel PCAService Manual 5700A/5720A Series II CalibratorTitle Schematic DiagramsChapter PageService Manual 5700A/5720A Series II CalibratorSchematic Diagrams Figure 7-1. A1 Keyboard PCAFigure 7-1. A1 Keyboard PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-2. A2 Front Panel PCAFigure 7-2. A2 Front Panel PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-2. A2 Front Panel PCA contFigure 7-2. A2 Front Panel PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-2. A2 Front Panel PCA contFigure 7-3. A3 Analog Motherboard PCA Service Manual5700A/5720A Series Schematic Diagrams Figure 7-23. A3 Analog Motherboard PCA contFigure 7-3. A3 Analog Motherboard PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-3. A3 Analog Motherboard PCA contFigure 7-3. A3 Analog Motherboard PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-4. A4 Digital Motherboard PCAFigure 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 Schematic Diagrams Figure 7-5. A5 Wideband Output PCA Option -03 contFigure 7-5. A5 Wideband Output PCA Option -03 cont Service Manual5700A/5720A Series 5700A-7610 Schematic Diagrams7-23 Figure 7-6. A6 Wideband Oscillator PCA OptionFigure 7-6. A6 Wideband Output PCA Option Service Manual5700A/5720A Series Schematic Diagrams Figure 7-6. A6 Wideband Oscillator PCA Option -03 contFigure 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 Schematic Diagrams Figure 7-7. A7 Current/High-Resolution Oscillator PCA cont5700A/5720A Series Service ManualFigure 7-7. A7 Current/High-Resolution Oscillator PCA cont 7-31 Schematic DiagramsFigure 7-7. A7 Current/High-Resolution 5700A-1021 4 of5700A/5720A Series Service ManualFigure 7-8. A8 Switch Matrix PCA 5700A-1622Schematic Diagrams Figure 7-8. A8 Swith Matrix PCA cont5700A/5720A Series Service ManualFigure 7-8. A8 Switch Matrix PCA cont Schematic Diagrams Figure 7-8. A8 Swith Matrix PCA cont5700A/5720A Series Service ManualFigure 7-8. A8 Switch Matrix PCA cont Schematic Diagrams Figure 7-8. A8 Swith Matrix PCA contFigure 7-9. A9 Ohms Cal PCA Service Manual5700A/5720A Series 5700A-1631Schematic Diagrams Figure 7-9. A9 Ohms Cal PCA contFigure 7-9. A9 Ohms Cal PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-9. A9 Ohms Cal PCA contFigure 7-9. A9 Ohms Cal PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-10. A10 Ohms Main PCAFigure 7-10. A10 Ohms Main PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-10. A10 Ohms Main PCAFigure 7-10. A10 Ohms Main PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-10. A10 Ohms Main PCAFigure 7-11. A11 DAC PCA Service Manual5700A/5720A Series 5700A-7640Schematic Diagrams Figure 7-11. A11 DAC PCA contFigure 7-11. A11 DAC PCA cont Service Manual5700A/5720A Series 22uFSchematic Diagrams Figure 7-11. A11 DAC PCA cont7-52 Service Manual5700A/5720A Series Figure 7-11. A11 DAC PCA contSchematic Diagrams Figure 7-11. A11 DAC PCA contFigure 7-11. A11 DAC PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-12. A11A1 DAC Filter SIP PCAFigure 7-13. A1142 DAC Buffered Reference SIP PCA Service Manual5700A/5720A Series Figure 7-14. A12 Oscillator Control PCA cont Schematic Diagrams5700A-7650 5700A/5720A Series Service Manual4. C5 AND C55 ARE NOT INSTALLED Figure 7-14. A12 Oscillator Control PCA contSchematic Diagrams Figure 7-14. A12 Oscillator Control PCA cont7-60 Service Manual5700A/5720A Series Figure 7-14. A12 Oscillator Control PCA contSchematic Diagrams Figure 7-15. A13 Oscillator Output PCAFigure 7-15. A13 Oscillator Output PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-15. A13 Oscillator Output PCA contFigure 7-15. A13 Oscillator Output PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-16. A13A1 Oscillator Wideband SMD PCAFigure 7-16. A13A1 Oscillator Wideband SMD PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-17. A14 High Voltage Control PCA7-68 Service Manual5700A/5720A Series Figure 7-17. A14 High Voltage Control PCA contSchematic Diagrams Figure 7-17. A14 High Voltage Control PCA contFigure 7-17. A14 High Voltage Control PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-17. A14 High Voltage Control PCA contFigure 7-18. A15 High Voltage/ High Current PCA Service Manual5700A/5720A Series 5700A-1660Schematic Diagrams Figure 7-18. A15 High Voltage/High Current PCA contFigure 7-18. A15 High Voltage/High Current PCA cont Service Manual5700A/5720A Series 5700A-7670 Schematic DiagramsFigure 7-19. A16 Power Amplifier PCA 4. NOT INSTALLED Service ManualFigure 7-19. A16 Power Amplifier PCA cont 5700A/5720A Series10 M 2N4044 Schematic DiagramsFigure 7-19. A16 Power Amplifier PCA cont 5700A/5720A Series Service ManualFigure 7-19. A16 Power Amplifier PCA cont 7-78Schematic Diagrams Figure 7-20. A16A1 Power Amplifier Digitial Control SIP PCA5700A/5720A Series Service ManualFigure 7-20. A161A1 Power Amplifier Digital 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 Schematic Diagrams Figure 7-21. A17 Regulator/Guard Crossing PCA cont7-84 Service Manual5700A/5720A Series 5700A-7690Schematic Diagrams Figure 7-22. A18 Filter/PA Supply PCA contFigure 7-22. A18 Filter/PA Supply PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-23. A19 Digital Power Supply PCA5700A/5720A Series Service ManualFigure 7-23. A19 Digital Power Supply PCA cont Schematic Diagrams Figure 7-24. A20 CPU PCAFigure 7-24. A20 CPU PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-24. A20 CPU PCA contFigure 7-24. A20 CPU PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-24. A20 CPU PCA contFigure 7-24. A20 CPU PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-25. A21 Real Panel PCAFigure 7-25. A21 Rear Panel PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-25. A21 Rear Panel PCA contFigure 7-25. A21 Rear Panel PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-25. A21 Rear Panel PCA contFigure 7-25. A21 Rear Panel PCA cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-26. HybridsFigure 7-26. Hybrids cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-26. Hybrids contFigure 7-26. Hybrids cont Service Manual5700A/5720A Series Schematic Diagrams Figure 7-26. Hybrids contService Manual 5700A/5720A Series