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

Summary of Contents

  • Page 1

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

  • Page 2

    Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.

  • Page 3

    To avoid fire hazard, use only the specified replacement fuse: For 100 V or 120 V operation, use a 5A/250V time delay fuse (Fluke PN 109215). For 220 V or 240 V operation, use a 2.5A/250V time delay fuse (Fluke PN 851931).

  • Page 4

    USE THE PROPER POWER CORD Use only the power cord and connector appropriate for the voltage and plug configuration in your country. Use only a power cord that is in good condition. Refer power cord and connector changes to qualified service personnel. DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES To avoid explosion, do not operate the Calibrator in an atmosphere of explosive gas.

  • Page 5: Table Of Contents

    Local Operation ................1-4 1-4. Remote Operation (RS-232)............. 1-4 1-5. Remote Operation (IEEE-488) ............1-4 1-6. Service Information ................1-5 1-7. How to Contact Fluke ................1-5 1-8. Specifications..................1-6 1-9. General Specifications..............1-7 1-10. DC Voltage Specifications ............... 1-8 1-11.

  • Page 6: Table Of Contents

    5520A Service Manual Theory of Operation ................2-1 2-1. Introduction................... 2-3 2-2. Encoder Assembly (A2)................ 2-4 2-3. Synthesized Impedance Assembly (A5) ..........2-4 2-4. DDS Assembly (A6) ................2-5 2-5. Current Assembly (A7)................. 2-6 2-6. Voltage Assembly (A8) ................ 2-7 2-7.

  • Page 7: Table Of Contents

    Contents (continued) 4-5. Removing Rear Panel Assemblies............ 4-4 4-6. Removing the Filter PCA (A12)............4-4 4-7. Removing the Encoder (A2) and Display PCAs ......4-4 4-8. Removing the Keyboard and Accessing the Output Block ....4-4 4-9. Diagnostic Testing ................4-7 4-10.

  • Page 8: Table Of Contents

    5520A Service Manual 6-38. Leveled Sine Wave Flatness Calibration.......... 6-24 6-39. Low Frequency Calibration............6-24 6-40. High Frequency Calibration............6-25 6-41. Pulse Width Calibration ..............6-25 6-42. MeasZ Calibration ................6-26 6-43. Verification ................... 6-28 6-44. DC Voltage Verification..............6-29 6-45.

  • Page 9: Table Of Contents

    Contents (continued) 6-90. Wave Generator Specifications ............6-69 6-91. Trigger Signal Specifications for the Time Marker Function ..6-70 6-92. Trigger Signal Specifications for the Edge Function ....... 6-70 6-93. Theory of Operation................6-71 6-94. Voltage Mode ................... 6-71 6-95. Edge Mode..................

  • Page 10

    5520A Service Manual...

  • Page 11

    List of Tables Table Title Page 3-1. Consolidated List of Required Equipment for Calibration and Verification..3-3 3-2. Test Equipment Required for Calibrating DC Volts ..........3-6 3-3. Calibration Steps for DC Volts ................3-7 3-4. Test Equipment Required for Calibrating AC Volts ..........3-8 3-5.

  • Page 12

    5520A Service Manual 5-1. Chassis Assembly....................5-4 5-2. Front Panel Assembly .................... 5-7 5-3. Rear Panel Assembly ..................... 5-11 6-1. Volt Specifications ....................6-6 6-2. Edge Specifications ....................6-7 6-3. Leveled Sine Wave Specifications ................. 6-8 6-4. Time Marker Specifications ................... 6-9 6-5.

  • Page 13

    Contents (continued) 6-53. Leveled Sine Wave Frequency Verification ............6-97 6-54. Leveled Sine Wave Harmonics Verification............6-98 6-55. Low Frequency Flatness Verification at 5.5 V............6-101 6-56. High Frequency Flatness Verification at 5.5 V ............6-102 6-57. Time Marker Specifications ................... 6-103 6-58.

  • Page 14

    5520A Service Manual...

  • Page 15

    Connections for Calibrating Thermocouple Measuring ......... 3-11 3-6. Connections for Calibrating DC Current..............3-13 3-7. Connections for Calibrating AC Current with a Fluke A40 Shunt ......3-14 3-8. Connections for Calibrating AC Current with a Fluke A40A Shunt...... 3-17 3-9.

  • Page 16

    5520A Service Manual 6-1. SC600 Block Diagram ................... 6-14 6-2. Equipment Setup for SC600 Voltage Square Wave Measurements ...... 6-19 6-3. Equipment Setup for SC600 Edge and Wave Gen Square Wave Measurements .. 6-20 6-4. Connecting the Calibrator Mainframe to the 5790A AC Measurement Standard . 6-24 6-5.

  • Page 17: Introduction And Specifications

    Local Operation ................1-4 1-4. Remote Operation (RS-232)............. 1-4 1-5. Remote Operation (IEEE-488) ............1-4 1-6. Service Information ................1-5 1-7. How to Contact Fluke ................1-5 1-8. Specifications..................1-6 1-9. General Specifications..............1-7 1-10. DC Voltage Specifications ............... 1-8 1-11.

  • Page 18

    5520A Service Manual...

  • Page 19: Introduction

    Calibrator, you can calibrate precision multimeters that measure ac or dc voltage, ac or dc current, ac or dc power, resistance, capacitance, and temperature. The 5520A can display pressure measurements when used with a Fluke 700 Series Pressure Module. With the SC600 and SC300 Oscilloscope Calibration options, you can use the 5520A Calibrator to calibrate analog and digital oscilloscopes.

  • Page 20: Operation Overview, Local Operation, Remote Operation (rs-232), Remote Operation (ieee-488)

    SERIAL 2 TO UUT serial port. See Chapter 6 of the 5520A Operators Manual for a discussion of the UUT_* commands. The SERIAL 2 TO UUT port is also used to connect to the Fluke 700 series pressure modules. 1-5.

  • Page 21: Service Information, How To Contact Fluke

    Figure 1-2. RS-232 Remote Connections 1-6. Service Information In case of difficulty within the 1-year Warranty period, return the Calibrator to a Fluke Service Center for Warranty repair. For out of Warranty repair, contact a Fluke Service Center for a cost estimate.

  • Page 22: Specifications

    5520A Service Manual 1-8. Specifications The following tables list the 5520A specifications. All specifications are valid after allowing a warm-up period of 30 minutes, or twice the time the 5520A has been turned off. (For example, if the 5520A has been turned off for 5 minutes, the warm-up period is 10 minutes.) All specifications apply for the temperature and time period indicated.

  • Page 23: General Specifications

    Introduction and Specifications Specifications 1-9. General Specifications Warmup Time Twice the time since last warmed up, to a maximum of 30 minutes. Settling Time Less than 5 seconds for all functions and ranges except as noted. Standard Interfaces IEEE-488 (GPIB), RS-232, 5725A Amplifier Temperature Performance Operating: 0 °C to 50 °C Calibration (tcal): 15 °C to 35 °C...

  • Page 24: Dc Voltage Specifications

    5520A Service Manual 1-10. DC Voltage Specifications Absolute Uncertainty, tcal Resolution Stability Burden (ppm of output 24 hours, Range 90 days 1 year (ppm output 0 to 329.9999 mV 0 to 3.299999 V 10 mA 0 to 32.99999 V 10 mA 30 V to 329.9999 V 5 mA 100 V to 1000.000 V...

  • Page 25: Dc Current Specifications

    Introduction and Specifications Specifications 1-11. DC Current Specifications Absolute Uncertainty, tcal Compliance (ppm of output Inductive Voltage Load 90 days 1 year Range Resolution 0 to 329.999 mA 0.02 0.02 1 nA 0 to 3.29999 mA 0.05 0.05 0.01 mA 0 to 32.9999 mA 0.25 0.25...

  • Page 26

    5520A Service Manual DC Current Specifications (cont) Ambient 10 C 20 C 30 C 40 C Current (Amps) nn326f.eps Figure 1-4. Allowable Duration of Current > 11 A 1-10...

  • Page 27: Resistance Specifications

    Introduction and Specifications Specifications 1-12. Resistance Specifications Absolute Uncertainty, tcal Range Resolution Allowable (ppm of output floor) [2] Floor ppm of output Time & temp since ohms zero Current [3] 90 days 1 year 12 hrs 7 days 0 to 0.001 0.

  • Page 28: Ac Voltage (sinewave) Specifications

    5520A Service Manual 1-13. AC Voltage (Sine Wave) Specifications NORMAL (Normal Output) Max Distortion Absolute Uncertainty, and Noise tcal ± 5 °C Range Frequency Resolution 10 Hz to 5 MHz ± (ppm of output + µV) Burden Bandwidth ± (% output + 90 days 1 year floor)

  • Page 29

    Introduction and Specifications Specifications AC Voltage (Sine Wave) Specifications (cont) AUX (Auxiliary Output) [dual output mode only] [1] Max Distortion Absolute Uncertainty, and Noise tcal ± 5 °C 10 Hz to Range Frequency Resolution ± (% of output + µV) Burden 100 kHz Bandwidth...

  • Page 30: Ac Current (sinewave) Specifications

    5520A Service Manual 1-14. AC Current (Sine Wave) Specifications LCOMP off Distortion & Noise 10 Hz Absolute Uncertainty, Compliance to 100 kHz Inductive Range Frequency tcal adder Load (% of output ( A/V) (% output 90 days 1 year floor) 29.00 A to 10 Hz to 20 Hz 0.16...

  • Page 31

    Introduction and Specifications Specifications AC Current (Sine Wave) Specifications (cont) LCOMP on Max Distortion Absolute Uncertainty, tcal & Noise, 10 Hz Inductive Range Frequency to 100 kHz BW Load (% of output (% output 90 days 1 year 29.00 A to 10 Hz to 100 Hz 0.25 329.99 A...

  • Page 32: Capacitance Specifications

    5520A Service Manual 1-15. Capacitance Specifications Absolute Uncertainty, tcal Allowed Frequency or Charge-Discharge Rate (% of output floor) Range Resolution Typical Typical Min and Max Max for Max for 90 days 1 year to Meet 0.5% Specification Error Error 0.19 nF to 0.38 0.01 nF 0.01 nF...

  • Page 33: Temperature Calibration (thermocouple) Specifications

    Introduction and Specifications Specifications 1-16. Temperature Calibration (Thermocouple) Specifications Absolute Uncertainty Absolute Uncertainty Range Range Source/Measure Source/Measure Type Type tcal 5 C tcal 5 C C [3] C [3] 90 days 1 year 90 days 1 year 600 to 800 0.42 0.44 -200 to -100...

  • Page 34: Temperature Calibration (rtd) Specifications

    5520A Service Manual 1-17. Temperature Calibration (RTD) Specifications Absolute Absolute Range Range Uncertainty Uncertainty Type Type tcal 5 C tcal 5 C C [2] C [2] 90 days 1 year 90 days 1 year Pt 395, -200 to -80 0.04 0.05 Pt 385, -200 to -80...

  • Page 35: Dc Power Specification Summary, Ac Power (45 Hz To 65 Hz) Specification Summary, Pf=1

    Introduction and Specifications Specifications 1-18. DC Power Specification Summary Current Range 0.33 mA to 0.33 A to 3 A to Voltage Range 329.99 mA 2.9999 A 20.5 A Absolute Uncertainty, tcal 5 C, (% of watts output) [1] 90 days 33 mV to 1020 V 0.021 0.019 [2]...

  • Page 36: Power And Dual Output Limit Specifications

    5520A Service Manual 1-20. Power and Dual Output Limit Specifications Power Voltages Voltages Factor Frequency Currents (NORMAL) (AUX) (PF) 0 to 1020 V 0 to 20.5 A 0 to 10 Hz to 45 Hz 33 mV to 32.9999 V 3.3 mA to 2.99999 A 10 mV to 5 V 0 to 1 45 Hz to 65 Hz...

  • Page 37: Phase Specifications

    Introduction and Specifications Specifications 1-21. Phase Specifications 1-Year Absolute Uncertainty, tcal 5 C, ( 10 Hz to 65 Hz to 500 Hz to 1 kHz to 5 kHz to 10 kHz to 65 Hz 500 Hz 1 kHz 5 kHz 10 kHz 30 kHz 0.10...

  • Page 38: Calculating Power Uncertainty

    5520A Service Manual 1-22. Calculating Power Uncertainty Overall uncertainty for power output in watts (or VARs) is based on the root sum square (rss) of the individual uncertainties in percent for the selected voltage, current, and power factor parameters: Watts uncertainty power voltage current...

  • Page 39: Additional Specifications, Frequency Specifications

    Introduction and Specifications Additional Specifications 1-23. Additional Specifications The following paragraphs provide additional specifications for the 5520A Calibrator ac voltage and ac current functions. These specifications are valid after allowing a warm-up period of 30 minutes, or twice the time the 5520A has been turned off. All extended range specifications are based on performing the internal zero-cal function at weekly intervals, or when the ambient temperature changes by more than 5 C.

  • Page 40: Harmonics (2nd To 50th) Specifications

    5520A Service Manual 1-25. Harmonics (2nd to 50th) Specifications Voltages Fundamental Voltages Amplitude NORMAL Currents Frequency [1] AUX Terminals Uncertainty Terminals 10 Hz to 45 Hz 33 mV to 32.9999 V 3.3 mA to 2.99999 A 10 mV to 5 V Same % of output as 45 Hz to 65 Hz...

  • Page 41: Ac Voltage (sinewave) Extended Bandwidth Specifications

    Introduction and Specifications Additional Specifications 1-26. AC Voltage (Sine Wave) Extended Bandwidth Specifications 1-Year Absolute Max Voltage Range Frequency Uncertainty Resolution tcal Normal Channel (Single Output Mode) 1.0 mV to 33 mV 0.01 Hz to 9.99 Hz (5.0 % of output Two digits, e.g., 25 mV 34 mV to 330 mV 0.5% of range)

  • Page 42: Ac Voltage (non-sinewave) Specifications

    5520A Service Manual 1-27. AC Voltage (Non-Sine Wave) Specifications Triangle Wave & Frequency 1-Year Absolute Uncertainty, Max Voltage Truncated tcal 5 C, Resolution Sine (% of output % of range) [2] Range, p-p [1] Normal Channel (Single Output Mode) 0.01 Hz to 10 Hz Two digits on 2.9 mV each range...

  • Page 43: Ac Voltage, Dc Offset Specifications

    Introduction and Specifications Additional Specifications 1-28. AC Voltage, DC Offset Specifications 1-Year Absolute Offset Offset Range Range [1] Uncertainty, tcal 5 C [3] Peak (Normal Channel) (% dc output floor) Signal Sine Waves (rms) 3.3 mV to 32.999 mV 0 to 50 mV 80 mV 33 V 33 mV to 329.999 mV...

  • Page 44: Ac Voltage, Squarewave Characteristics, Ac Voltage, Trianglewave Characteristics (typical), Ac Current (sinewave) Extended Bandwidth Specifications

    5520A Service Manual 1-29. AC Voltage, Square Wave Characteristics Risetime Settling Time Overshoot Duty Cycle @ 1 kHz @ 1 kHz @ 1 kHz Duty Cycle Uncertainty Range Typical Typical Typical 10 s to 1% 1% to 99%, (0.02% of period + 100 ns), 50% duty cycle of final value 3.3 V p-p, (0.05% of period + 100 ns), other duty cycles...

  • Page 45: Ac Current (non-sinewave) Specifications

    Introduction and Specifications Additional Specifications 1-32. AC Current (Non-Sine Wave) Specifications Triangle Wave & Frequency 1-Year Absolute Uncertainty Truncated Sine tcal Current Wave Range (% of output % of range) Resolution 0.047 mA 0.01 Hz o 10 Hz Two digits to 0.92999 mA [1] 10 Hz to 45 Hz 0.25...

  • Page 46

    5520A Service Manual AC Current (Non-Sine Wave) Specifications (cont) Frequency 1-Year Absolute Uncertainty, Square Wave tcal 5 C, Range Current (% of output % of range) Resolution 0.047 mA to 0.01 Hz to 10 Hz Two digits 0.65999 mA [1] 10 Hz to 45 Hz 0.25 45 Hz to 1 kHz...

  • Page 47: Ac Current, Squarewave Characteristics (typical), Ac Current, Trianglewave Characteristics (typical)

    Introduction and Specifications Additional Specifications 1-33. AC Current, Square Wave Characteristics (typical) Range LCOMP Risetime Settling Time Overshoot 6A @ 400 Hz 25 s 40 s to 1% of final value 10% for Compliance 3A & 20A 100 s 200 s to 1% of final value 10% for Ranges Compliance...

  • Page 48

    5520A Service Manual 1-32...

  • Page 49: Theory Of Operation

    Chapter 2 Theory of Operation Title Page 2-1. Introduction................... 2-3 2-2. Encoder Assembly (A2)................ 2-4 2-3. Synthesized Impedance Assembly (A5) ..........2-4 2-4. DDS Assembly (A6) ................2-5 2-5. Current Assembly (A7)................. 2-6 2-6. Voltage Assembly (A8) ................ 2-7 2-7. Main CPU Assembly (A9)..............

  • Page 50

    5520A Service Manual...

  • Page 51

    Theory of Operation Introduction 2-1. Introduction This chapter provides a block diagram discussion of the calibrator’s analog and digital sections. Figure 2-1 shows the arrangement of assemblies inside the 5520A. The Oscilloscope Calibration Option is described in the Options chapter. The 5520A produces calibration outputs of the following functions and ranges: DC voltage from 0 V to 1000 V.

  • Page 52: Encoder Assembly (a2), Synthesized Impedance Assembly (a5)

    5520A Service Manual 2-2. Encoder Assembly (A2) The Encoder assembly (A2) has its own microprocessor and is in communication with the Main CPU (A9) on the Rear Panel through a serial link. Memory for the Encoder assembly is contained in EPROM. The Encoder assembly handles the interface to the Keyboard assembly (A1).

  • Page 53: Dds Assembly (a6)

    Theory of Operation DDS Assembly (A6) NORMAL = (1 + K) • C NORMAL SCOM yg118f.eps Figure 2-3. Synthesized Capacitance Function 2-4. DDS Assembly (A6) The DDS (Direct Digital Synthesis) assembly (A6) contains the following blocks: References for all voltage and current functions. Gain determining elements for voltage functions and thermocouple measuring and sourcing.

  • Page 54: Current Assembly (a7)

    5520A Service Manual The dual-channel DDS (Direct Digital Synthesizer) generates finely stepped digital waveforms that take the form of sine, triangular, and other waveforms. 2-5. Current Assembly (A7) The Current assembly outputs six current ranges (330 A, 3.3 mA, 33 mA, 330 mA, 3 A, and 20 A) and three voltage ranges (330 mV, 3.3 V, and 5V) to the AUX outputs.

  • Page 55: Voltage Assembly (a8)

    Theory of Operation Voltage Assembly (A8) 2-6. Voltage Assembly (A8) The Voltage assembly (A8) generates dc and ac voltage outputs in the range 3.3 V and above. It also provides all the inguard supplies referenced to SCOM as described under the heading “Power Supplies.”...

  • Page 56: Main Cpu Assembly (a9), Power Supplies, Outguard Supplies, Inguard Supplies

    5520A Service Manual 2-7. Main CPU Assembly (A9) The Main CPU (A9) attached to the rear panel assembly communicates with the following assemblies: Inguard CPU on the DDS assembly (A6) Display assembly CPU Serial and IEEE interfaces External amplifier (5725A) The main CPU memory is Flash ROM.

  • Page 57: Calibration And Verification

    Chapter 3 Calibration and Verification Title Page 3-1. Introduction................... 3-3 3-2. Equipment Required for Calibration and Verification......3-3 3-3. Calibration .................... 3-5 3-4. Starting Calibration ................3-5 3-5. DC Volts Calibration (NORMAL Output) ........3-6 3-6. DC Volts Calibration (30 Vdc and Above) ........3-7 3-7.

  • Page 58

    5520A Service Manual...

  • Page 59: Equipment Required For Calibration And Verification, Introduction

    Use the Verification procedure or any part thereof any time you need to verify that the Calibrator is meeting its specifications. Fluke recommends that you return the 5520A to Fluke for calibration and verification. The Fluke Service Center uses a software-controlled verification process and provides a detailed test report including traceability to national standards.

  • Page 60

    North Atlantic 2000 Precision Phase Meter [1] Phase Clarke-Hess 6000 Fluke PN 690567 Fluke resistor network used as Phase a shunt, 0.01 , 0.09 , 0.9 values needed Fluke 6680B Frequency Counter Frequency [1] If desired, the test uncertainty ratio (TUR) may be improved by characterizing the phase meter with a...

  • Page 61: Calibration, Starting Calibration

    Calibration and Verification Calibration 3-3. Calibration The standard 5520A has no internal hardware adjustments. Oscilloscope Options have hardware adjustments; see Chapter 6. The Control Display prompts you through the entire calibration procedure. Calibration occurs in the following major steps: 1. The 5520A sources specific output values and you measure the outputs using traceable measuring instruments of higher accuracy.

  • Page 62: Dc Volts Calibration (normal Output)

    The equipment listed in Table 3-2 is required for calibration of the dc volts function. (The equipment is also listed in the consolidated table, Table 3-1.) Table 3-2. Test Equipment Required for Calibrating DC Volts Quan. Manufacturer Model Equipment Fluke 5500A/LEADS Test lead set Hewlett Packard 3458A with -002 Option Fluke 752A...

  • Page 63: Dc Volts Calibration (30 Vdc And Above)

    Calibration and Verification Calibration Table 3-3. Calibration Steps for DC Volts Step 5520A Output (NORMAL) 1.000000 V 3.000000 V -1.000000 V -3.000000 V 0.0000 mV 300.0000 mV 30.00000 V 300.0000 V 1000.000 V 5520A CALIBRATOR HP3458A NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK...

  • Page 64: Ac Volts Calibration (normal Output)

    AC Measurement Standard Proceed as follows to calibrate the ac voltage function: 1. Measure the 5520A output using Input 1 of a Fluke 5790A AC Measurement Standard. Use a Type N to dual banana adapter as Figure 3-3 shows. 2. Enter the measured values into the 5520A for each step in Table 3-5 as prompted.

  • Page 65

    Calibration and Verification Calibration Table 3-5. Calibration Steps for AC Volts 5520A Output (NORMAL) Step Amplitude Frequency 3.29990 V 100.00 Hz 0.33000 V 100.00 Hz 3.00000 V 500.0 kHz 3.0 V 9.99 Hz 30.000 mV 100.00 Hz 300.000 mV 100.00 Hz 300.000 mV 500.0 kHz 30.0000 V...

  • Page 66: Thermocouple Function Calibration

    (The equipment is also listed in the consolidated table, Table 3-1.) Table 3-6. Test Equipment Required for Calibrating the Thermocouple Function Quan. Manufacturer Model Equipment Fluke 5520A/LEADS Test lead set (includes Type-J thermocouple, wire, and mini plug) 4 feet various...

  • Page 67: Dc Current Calibration

    Calibration and Verification Calibration 5520A CALIBRATOR HP3458A NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK 150V TRIG Attach wires directly to SHELLS GUARD GROUNDED binding posts 20V PK MAX 20V PK MAX yg105f.eps Figure 3-4. Connections for Calibrating Thermocouple Sourcing Mercury Thermometer 5520A...

  • Page 68

    5520A Service Manual Table 3-8. Test Equipment Required for Calibrating DC Current Quan. Manufacturer Model Equipment Fluke 5500A/LEADS Test lead set Hewlett Packard 3458A with -002 option Fluke 742A-1k Resistance Standard, 1 k Fluke 742A-100 Resistance Standard, 100 Fluke 742A-10...

  • Page 69

    Calibration Table 3-9. Calibration Steps for DC Current Step 5520A Output (AUX HI, LO) Shunt to Use 300.000 A Fluke 742A-1k 1 k Resistance Standard 3.00000 mA Fluke 742A-100 100 Resistance Standard 30.000 mA Fluke 742A-10 10 Resistance Standard 300.000 mA...

  • Page 70: Ac Current Calibration

    Set 5790A to external guard yg130f.eps Figure 3-7. Connections for Calibrating AC Current with a Fluke A40 Shunt 2. For each amplitude listed in Table 3-11, apply the equivalent +(positive) and - (negative) dc current from the 5520A. 3. Compute the actual dc characterization value using this formula:...

  • Page 71

    (The equipment is also listed in the consolidated table, Table 3-1.) Refer to Figure 3-8 for the proper connections. Table 3-10. Test Equipment Required for Calibrating AC Current Quan. Manufacturer Model Equipment Fluke 5500A/LEADS Test lead set Fluke PN 900394 Type N to dual banana adapter Fluke...

  • Page 72

    Table 3-11. Calibration Steps for AC Current 5520A Output (AUX HI, LO) Step Amplitude Frequency Shunt to Use 3.29990 mA 100.00 Hz Fluke A40 10 mA 0.33000 mA 100.00 Hz Fluke A40 10 mA 3.00000 mA 10.00 kHz Fluke A40 10 mA 3.00000 mA 30.000 kHz...

  • Page 73

    10V PEAK SHELL FLOATING SHELLS GUARD GROUNDED Input GROUND GUARD 20V PK MAX 20V PK MAX 10V PK Ensure the UUT is connected to the shunt "INPUT" yg129f.eps Figure 3-8. Connections for Calibrating AC Current with a Fluke A40A Shunt 3-17...

  • Page 74

    5520A Service Manual Fluke Corporation - Worldwide Support Center MET/CAL Procedure ============================================================================= INSTRUMENT: Sub Fluke 5520A ACI ADJ DATE: 22-Sep-98 AUTHOR: Gary Bennett, Metrology Specialist REVISION: ADJUSTMENT THRESHOLD: NUMBER OF TESTS: NUMBER OF LINES: CONFIGURATION: Fluke 5790A ============================================================================= STEP RANGE NOMINAL...

  • Page 75

    Calibration and Verification Calibration 1.023 MATH M[17] = MEM # Apply nominal -DC Current to A40 1.024 IEEE OUT -3.2999mA, 0HZ; OPER; *OPC?[I][GTL] 1.025 IEEE [D5000][GTL] 1.026 ACMS 1.027 5790 1.028 MATH M[17] = (ABS(MEM) + M[17]) / 2 1.029 IEEE OUT .33mA, 0HZ;...

  • Page 76: Dc Volts Calibration (aux Output), Ac Volts Calibration (aux Output)

    5520A Service Manual # Retrieve AC-DC difference from data file named "A40-10mA" 1.059 get_acdc A40-10mA 1.060 JMPT 1.064 1.061 OPBR An error occurred during get_acdc 1.061 OPBR Press YES to try again or NO to terminate. 1.062 JMPT 1.059 1.063 1.231 # Correct the calculated value of AC Current by adding the AC-DC difference # of the A40-series shunt used at the frequency under test...

  • Page 77: Resistance Calibration

    5. Measure and enter the values into the UUT for calibration steps 1 through 8 in Table 3-15 as prompted. 6. Disconnect the DMM from the UUT, and connect it to the Fluke 742A-1M Resistance Standard as shown in Figure 3-11. Scale the 1 M DMM range to the Resistance Standard as described in the HP3458A user documentation.

  • Page 78

    5520A Service Manual 14. Measure and enter the values into the UUT for calibration steps 14 and 15 in Table 3- 15 as prompted. 15. Disconnect the DMM from the UUT, and connect it to the Guildline 9334H/1G Resistance Standard. Scale the 1 G DMM range to the Resistance Standard as described in the HP3458A user documentation.

  • Page 79

    Set the HP3458A SHELLS GUARD GROUNDED to external guard 20V PK MAX 20V PK MAX yg111f.eps Figure 3-10. Four-Wire Resistance Connection 742A HP3458A Set the HP3458A to external guard yg112f.eps Figure 3-11. Scaling the DMM to a Fluke 742A 3-23...

  • Page 80: Capacitance Calibration

    The equipment listed in Table 3-16 is required for calibration of the resistance function. (The equipment is also listed in the consolidated table, Table 3-1.) Table 3-16. Test Equipment Required for Calibrating Capacitance Quan. Manufacturer Model Equipment Fluke PM 9540/BAN Cable Set Fluke PM 6304C LCR Meter 3-24...

  • Page 81

    Calibration and Verification Calibration Proceed as follows to calibrate the capacitance function: 1. Connect the UUT to the LCR meter using the Fluke PM 9540/BAN cables as shown in Figure 3-14. These special cables eliminate the need for a four-wire connection. Note Make sure there are no other connections to the 5520A, especially the SCOPE BNC.

  • Page 82

    5520A Service Manual 5520A CALIBRATOR PM6304C NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK 150V TRIG SHELLS GUARD GROUNDED PM9540/BAN Cable 20V PK MAX 20V PK MAX yg115f.eps Figure 3-14. Connections for Calibrating Capacitance Output Terminals NORMAL 5500A CALIBRATOR...

  • Page 83: Calibration Remote Commands

    Calibration and Verification Calibration Remote Commands 5500A CALIBRATOR Precision Phase NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V PREV STBY EARTH SCOPE BOOST MENU 1000V 1V PK Meter EDIT 150V SETUP RESET FIELD TRIG ¡F ¡C MEAS TRIG SHELLS GUARD GROUNDED POWER...

  • Page 84

    1. Connect the appropriate COM port from a PC to the 5520A Serial 1 connector, using a Fluke PM8914 cable. 2. Call up the Terminal program from within Microsoft Windows. Set the communications parameters to match that of the 5520A.

  • Page 85

    Calibration and Verification Calibration Remote Commands CAL_ABORT Description: Instruct 5520A to abort calibration procedure after present step Example: CAL_ABORT CAL_BACKUP Description: Skip to next entry point in calibration procedure. CAL_DATE? Description: Return a calibration date associated with stored calibration constants. The date is returned with the same format as the CLOCK command.

  • Page 86

    5520A Service Manual CAL_INFO? Description: Return message or instructions associated with running step Response: (String) the message string CAL_NEXT Description: Continue a calibration procedure if it is waiting for a CAL_NEXT command. Parameter: (Optional) reference value (used if it’s waiting for a reference) If the reference value has no unit, the unit is assumed to be that returned by the CAL_REF? command Example:...

  • Page 87

    Calibration and Verification Calibration Remote Commands 2. (Optional) name of the step at which to start. If this parameter is not provided, it starts at the beginning. Example: CAL_START MAIN CAL_START MAIN,DVG3_3 CAL_STATE? Description: Return state of calibration Response: RUN - Running a calibration step REF - Waiting for a CAL_NEXT with reference (measurement) value INS - Instruction available, waiting for a CAL_NEXT NOT - Not in a calibration procedure (or at end of one)

  • Page 88

    5520A Service Manual EOFSTR? Description: Returns the End-Of-File character string used for calibration reports Parameter: None Response: (String) The End-Of-File character string PR_RPT Description: Prints a self-calibration report out the selected serial port Parameter: 1. Type of report to print: STORED, ACTIVE, or CONSTS 2.

  • Page 89: Generating A Calibration Report

    Calibration and Verification Generating a Calibration Report RPT_STR Description: Sets the user report string used for calibration reports. The string is stored in nonvolatile memory. The CALIBRATION switch must be set to ENABLE. Parameter: String of up to 40 characters RPT_STR? Description: Returns the user report string used for calibration reports.

  • Page 90: Performance Verification Tests, Zeroing The Calibrator

    5520A Service Manual “active,” lists output shifts as a result of a calibration just performed but whose calibration constants are not yet stored. “consts,” which is a listing of the active set of raw calibration constant values. 3-17. Performance Verification Tests The following tests are used to verify the performance of the 5520A Calibrator.

  • Page 91: Verifying Dc Volts (normal Output)

    Calibration and Verification Performance Verification Tests 3-19. Verifying DC Volts (NORMAL Output) Verify that the 5520A performance is within the limits in Table 3-19, using the same equipment and techniques specified previously for calibration. Table 3-19. Verification Tests for DC Voltage (NORMAL Output) Range Output Lower Limit...

  • Page 92: Verifying Dc Volts (aux Output), Verifying Dc Current

    Table 3-21. Table 3-21. Shunt Values for DC Current Calibration and Verification Range of Verification Points Shunt (0 to 329.000 A) Fluke 742A-1k 1k Resistance Standard (1.9 mA to 3.29000 mA) Fluke 742A-100 100 Resistance Standard (19.0000 mA to 32.9000 mA)

  • Page 93

    Calibration and Verification Performance Verification Tests Table 3-22. Verification Tests for DC Current (AUX Output) Range Output Lower Limit Upper Limit 329.999 A 0.000 A -0.020 A 0.020 A 329.999 A 190.000 A 189.957 A 190.043 A 329.999 A -190.000 A -190.043 A -189.957 A 329.999 A...

  • Page 94: Verifying Resistance

    5520A Service Manual 3-22. Verifying Resistance Verify that the 5520A performance is within the limits in Table 3-23, using the same equipment and techniques specified previously for calibration. Use four-wire measurements for values smaller than 110 k , then two-wire measurements for higher resistance values.

  • Page 95

    Calibration and Verification Performance Verification Tests Table 3-23. Verification Tests for Resistance (cont) Range Output Lower Limit Upper Limit 3.299999 M 1.190000 M 1.189922 M 1.190078 M 3.299999 M 1.900000 M 1.899894 M 1.900106 M 3.299999 M 3.000000 M 2.999850 M 3.000150 M 10.99999 M 3.30000 M...

  • Page 96: Verifying Ac Voltage (normal Output)

    5520A Service Manual 3-23. Verifying AC Voltage (NORMAL Output) Verify that the 5520A performance is within the limits in Table 3-24, using the same equipment and techniques specified previously for calibration. Table 3-24. Verification Tests for AC Voltage (NORMAL Output) Range Output Frequency...

  • Page 97

    Calibration and Verification Performance Verification Tests Table 3-24. Verification Tests for AC Voltage (NORMAL Output) (cont) Range Output Frequency Lower Limit Upper Limit 3.29999 V 3.00000 V 50 kHz 2.99920 V 3.00080 V 3.29999 V 3.00000 V 100 kHz 2.99823 V 3.00178 V 3.29999 V 3.00000 V...

  • Page 98: Verifying Ac Voltage (aux Output)

    5520A Service Manual 3-24. Verifying AC Voltage (AUX Output) Verify that the 5520A performance is within the limits in Table 3-25, using the same equipment and techniques specified previously for calibration. Table 3-25. Verification Tests for AC Voltage (AUX Output) Output, AUX Range Frequency...

  • Page 99: Verifying Ac Current

    1.9 mA to 3.29990 mA metal film resistor in a shielded box 19 mA to 3.3 mA Fluke A40 20 mA Shunt 30.0000 mA to 190 mA Fluke A40 200 mA Shunt 300.000 mA to 2 A Fluke A40 2A Shunt 2.99000 A to 20.0000 A...

  • Page 100

    5520A Service Manual Table 3-27. Verification Tests for AC Current Range Output Frequency Lower Limit Upper Limit 329.99 A 33.00 A 1 kHz 32.87 A 33.13 A 329.99 A 33.00 A 10 kHz 32.60 A 33.40 A 329.99 A 33.00 A 30 kHz 32.20 A 33.80 A...

  • Page 101

    Calibration and Verification Performance Verification Tests Table 3-27. Verification Tests for AC Current (cont) Range Output Frequency Lower Limit Upper Limit 32.999 mA 32.9000 mA 1 kHz 32.886 mA 32.914 mA 32.999 mA 32.9000 mA 5 kHz 32.877 mA 32.923 mA 32.999 mA 32.9000 mA 10 kHz...

  • Page 102: Verifying Capacitance

    5520A Service Manual Table 3-27. Verification Tests for AC Current (cont) Range Output Frequency Lower Limit Upper Limit 20.5000 A 10.9000 A 45 Hz 10.8926 A 10.9075 A 20.5000 A 10.9000 A 65 Hz 10.8926 A 10.9075 A 20.5000 A 10.9000 A 500 Hz 10.8893 A...

  • Page 103: F To 110 Mf Capacitance Verification, Capacitance Measurement

    Calibration and Verification Performance Verification Tests Table 3-28. Verification Tests for Capacitance (cont) Test Frequency or Range Output Lower Limit Upper Limit Current 1.09999 F 0.70000 F 100 Hz 0.69767 F 0.70233 F 1.09999 F 1.09000 F 100 Hz 1.08693 F 1.09307 F 3.29999 F 2.00000 F...

  • Page 104

    HP 3458A operator’s documentation for more information. Proceed as follows to measure high-end capacitance: 1. Connect the Fluke 5700A, 5520A, HP 3458A DMM and computer as shown in Figure 3- 18 below. See Table 3-29 for the equipment required. 2. Lock the HP 3458A in the 10 V dc range.

  • Page 105

    Calibration and Verification Performance Verification Tests Current Source 5700A 5700A CALIBRATOR PC-GPIB Controller Synthesized Capacitance Standard 5520A 5520A CALIBRATOR HP 3458A (Front) NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK 150V TRIG SHELLS GUARD GROUNDED 20V PK MAX 20V PK MAX yg062f.eps Figure 3-18.

  • Page 106

    5520A Service Manual ’Initial 3458 Set-up: errmsg = gpibPut(a_3458, "TARM HOLD; DCV 10; APER 1.0e-3; MEM FIFO; SWEEP 0.1, 100; END ALWAYS") ------------------------------------------------------------------------------ ’5700 setup If (range(stp) > .002) Then ’ 1mF range with LCR Meter, 3mF range with I charge ’...

  • Page 107: Measurement Uncertainty

    While the HP 3458A dc volts accuracy is not specified for sample rates other than NPLC of 100, Fluke testing indicates the DMM is within 25 ppm for the fast sample rate. Adding the error terms yields (62.5 ppm + 25 ppm + 100 ppm) = 187.5 ppm, or 0.0187%, for a test uncertainty ratio (TUR) >...

  • Page 108: Verifying Thermocouple Simulation (sourcing), Verifying Thermocouple Measurement

    -99.9930 3-31. Verifying Thermocouple Measurement Verify that the 5520A performance is within the limits in Table 3-31. Use a Fluke 5500A Calibrator or similar instrument as the millivolt source, connected in parallel with an HP3458A DMM. At each verification point, use the 5500A error mode controls to adjust the calibrator output for a nominal reading on the DMM.

  • Page 109: Verifying Phase Accuracy, Volts And Aux Volts

    Calibration and Verification Performance Verification Tests 3-32. Verifying Phase Accuracy, Volts and AUX Volts Verify that the 5520A performance is within the limits in Table 3-32, using a precision phase meter see Figure 3-15. Table 3-32. Verification Tests for Phase Accuracy, V and V Output, Range, Normal Range, AUX...

  • Page 110: Verifying Phase Accuracy, Volts And Current

    5520A Service Manual 3-33. Verifying Phase Accuracy, Volts and Current Verify that the 5520A performance is within the limits in Table 3-33, using a precision phase meter with a shunt. See Figure 3-16. Table 3-33. Verification Tests for Phase Accuracy, V and I Output, Output, Range, Normal...

  • Page 111: Verifying Frequency Accuracy

    Calibration and Verification Performance Verification Tests 3-34. Verifying Frequency Accuracy Verify that the 5520A performance is within the limits in Table 3-34, using a Fluke PM 6680B Frequency Counter. Table 3-34. Verification Tests for Frequency Range, Normal Output, Frequency Lower Limit*...

  • Page 112

    5520A Service Manual 3-56...

  • Page 113

    A Message From Fluke Corporation Some semiconductors and custom IC's can be damaged by electrostatic discharge during handling. This notice explains how you can minimize the chances of destroying such devices 1. Knowing that there is a problem.

  • Page 114

    8. WHEN REMOVING PLUG-IN ASSEMBLIES 5. USE STATIC SHIELDING CONTAINERS FOR HANDLE ONLY BY NON-CONDUCTIVE HANDLING AND TRANSPORT. EDGES AND NEVER TOUCH OPEN EDGE CONNECTOR EXCEPT AT STATIC-FREE WORK STATION. PLACING SHORTING STRIPS ON EDGE CONNECTOR HELPS PROTECT INSTALLED S.S. DEVICES. 6.

  • Page 115

    Chapter 4 Maintenance Title Page 4-1. Introduction................... 4-3 4-2. Access Procedures ................4-3 4-3. Removing Analog Modules.............. 4-3 4-4. Removing the Main CPU (A9)............4-3 4-5. Removing Rear Panel Assemblies............ 4-4 4-6. Removing the Filter PCA (A12)............4-4 4-7. Removing the Encoder (A2) and Display PCAs ......4-4 4-8.

  • Page 116

    5520A Service Manual...

  • Page 117: Access Procedures, Introduction, Removing Analog Modules, Removing The Main Cpu (a9)

    Maintenance Introduction 4-1. Introduction Because this is a high performance instrument, it is not recommended that the user service the boards to the component level. In many different ways it is easy to introduce a subtle long-term stability problem by handling the boards. Access procedures are provided for those who want to replace a faulty module.

  • Page 118: Removing Rear Panel Assemblies, Removing The Filter Pca (a12)

    5520A Service Manual 4-5. Removing Rear Panel Assemblies Proceed as follows to remove the transformer and the ac line input filter. Figure 4-1 shows an exploded view of the rear panel assemblies. 1. Remove the two rear handles by removing the six Allen screws from the handles. 2.

  • Page 119

    Maintenance Access Procedures om016f.eps Figure 4-1. Exploded View of Rear Panel Assemblies...

  • Page 120

    5520A Service Manual om017f.eps Figure 4-2. Exploded View of Front Panel Assemblies...

  • Page 121: Diagnostic Testing, Running Diagnostics, Testing The Front Panel

    Maintenance Diagnostic Testing 4-9. Diagnostic Testing 5520A internal software provides extensive self-testing capabilities. In case of a malfunction, this is an excellent place to begin testing to isolate a faulty module. Note Self-tests should only be run after the 5520A has completed its warm-up. Access the diagnostics menu as follows: Press followed by UTILITY FUNCTNS, and SELF TEST.

  • Page 122: Complete List Of Error Messages

    5520A Service Manual 4-12. Complete List of Error Messages The following is a list of the 5520A Calibrator error messages. The error message format is shown in Table 4-1. Table 4-1. Error Message Format Error (Message Class : Description) Text Number characters 0 to 65535...

  • Page 123

    Maintenance Complete List of Error Messages (DDE: ) Wrong unit for reference (DDE: ) Entered value out of bounds (DDE: ) Not waiting for a reference (DDE: ) Continue command ignored (DDE:FR ) Cal constant outside limits (DDE:FR ) Cal try to null failed (DDE:FR D) Sequence failed during cal (DDE:FR D)

  • Page 124

    5520A Service Manual (DDE: ) Limit too small or large (DDE: ) No changes except RESET now (DDE: ) Offset out of range (DDE: ) Cannot edit to or from 0 Hz (DDE: ) Bad state image - not loaded (DDE: ) TC offset limited to +/-500 C (DDE: )

  • Page 125

    Maintenance Complete List of Error Messages (DDE:FR ) Serial characters dropped %s (DDE:FR ) Report timeout - aborted 1000 (DDE:FR ) Sequence failed during diag 1200 (DDE:FR ) Sequence name too long 1201 (DDE:FR ) Sequence RAM table full 1202 (DDE:FR ) Sequence name table full 1300...

  • Page 126

    5520A Service Manual 1514 (DDE:FRS ) External Clock too Slow 1515 (DDE:FR D) Can’t load waveform for scope mode 1600 (DDE:FR D) OPM transition error 1601 (DDE:FR D) TC measurement fault 1602 (DDE:FR D) Z measurement fault 65535 (DDE:FR ) Unknown error %d 4-12...

  • Page 127: How To Obtain Parts, Introduction, List Of Replaceable Parts

    Chapter 5 List of Replaceable Parts Title Page 5-1. Introduction................... 5-3 5-2. How to Obtain Parts................5-3...

  • Page 128

    5520A Service Manual...

  • Page 129

    +65-738-5655 Singapore +1-425-446-5500 from other countries Or, visit the Fluke web site at www.fluke.com. A list of service centers is available on the Fluke web site. In the event that the part ordered has been replaced by a new or improved part, the replacement will be accompanied by an explanatory note and installation instructions, if necessary.

  • Page 130

    5520A Service Manual Table 5-1. Chassis Assembly Reference Fluke Total Description Designator Stock No. Quantity *PCB, KEYBOARD 760868 *PCA, ENCODER 627232 *PCA, SUB-ASSY, MOTHERBOARD 626694 *PCA, SYNTHESIZED IMPEDANCE 626892 *PCA, DDS 626900 *PCA, CURRENT 626918 *PCA, SUB-ASSY, VOLTAGE 626710 *PCA, MAIN CPU...

  • Page 131

    List of Replaceable Parts How to Obtain Parts 5520A (Final Assembly) (5 of 6) yg018f.eps Figure 5-1. Chassis Assembly...

  • Page 132

    5520A Service Manual 5520A (A64) (4 of 6) yg019f.eps Figure 5-1. Chassis Assembly (cont)

  • Page 133

    List of Replaceable Parts How to Obtain Parts Table 5-2. Front Panel Assembly Reference Fluke Total Description Designator Stock No. Quantity H1-14,H28 SCREW,PH,P,LOCK,STL,6-32,.250 152140 H15-18 SCREW,CAP,SCKT,SS,8-32,.375 295105 H19-27,H36, H37 SCREW,WH,P,THD FORM,STL,5-20,. 494641 H29,H60,H61 BINDING POST-RED 886382 H38-041,H50-55 WASHER, LOW THERMAL #8...

  • Page 134

    5520A Service Manual Table 5-2. Front Panel Assembly (cont) Reference Fluke Total Description Designator Stock No. Quantity MP42,MP43 CORE,FERRITE,FLAT CABLE,2.0W,2 643814 MP47 CABLE ACCESS,TIE,11.00L,.19W,3 501734 MP48 SHIELD, DISPLAY 661717 MP55 GROMMET,EXTRUDED,POLYETHYLENE, 854351 MP67 TAPE,FOAM,VINYL,.500,.062 282152 MP66 BEZEL, FRONT PANEL 945238...

  • Page 135

    List of Replaceable Parts How to Obtain Parts 5520A (A63) (2 of 6) yg020f.eps Figure 5-2. Front Panel Assembly...

  • Page 136

    5520A Service Manual Rear View 5520A (A63) yg023f.eps Figure 5-2. Front Panel Assembly (cont) 5-10...

  • Page 137

    List of Replaceable Parts How to Obtain Parts Table 5-3. Rear Panel Assembly Reference Fluke Total Description Designator Stock No. Quantity BINDING HEAD, PLATED 102889 BINDING POST, STUD, PLATED 102707 F1 W FUSE,.25X1.25,5A,250V,SLOW 109215 F2,F3 W FUSE,.25X1.25,2.5A,250V,SLOW 851931 FILTER,LINE,250VAC,4A,W/ENTRY 944269...

  • Page 138

    5520A Service Manual Table 5-3. Rear Panel Assembly (cont) Reference Fluke Total Description Designator Stock No. Quantity MP18 LABEL,VINYL,1.500,.312 844712 MP20,MP21 CABLE ACCESS,TIE,4.00L,.10W,.7 172080 MP22 LABEL,MYLAR,GROUND SYMBOL 911388 MP24 LABEL, CE MARK, BLACK 600707 MP67 WIRE, 6" GROUND 626116 TRANSFORMER, POWER, MAIN...

  • Page 139

    List of Replaceable Parts How to Obtain Parts 5520A (A65) (3 of 6) yg021f.eps Figure 5-3. Rear Panel Assembly 5-13...

  • Page 140

    5520A Service Manual 5520A (Wiring Diagram) (6 of 6) yg022f.eps Figure 5-4. Wiring Diagram 5-14...

  • Page 141: Oscilloscope Calibration Options

    Chapter 6 Oscilloscope Calibration Options Option 5500A-SC600: see page 6-3. Option 5500A-SC300: see page 6-63.

  • Page 142

    5520A Service Manual...

  • Page 143: Sc600 Option

    Chapter 6 SC600 Option Title Page 6-1. Introduction................... 6-5 6-2. Maintenance..................6-5 6-3. SC600 Specifications................6-6 6-4. Volt Specifications ................6-6 6-5. Edge Specifications ................6-7 6-6. Leveled Sine Wave Specifications ........... 6-8 6-7. Time Marker Specifications ............. 6-9 6-8. Wave Generator Specifications ............

  • Page 144

    5520A Service Manual 6-36. Edge Amplitude Calibration............. 6-22 6-37. Leveled Sine Wave Amplitude Calibration........6-23 6-38. Leveled Sine Wave Flatness Calibration.......... 6-24 6-39. Low Frequency Calibration............6-24 6-40. High Frequency Calibration............6-25 6-41. Pulse Width Calibration ..............6-25 6-42. MeasZ Calibration ................6-26 6-43.

  • Page 145

    Table 6-15 under “Equipment Requirements for Calibration and Verification.” The calibration and verification procedures in this chapter are not the ones Fluke uses at the factory. These procedures have been developed to provide you with the ability to calibrate and verify the SC600 at your own site if necessary.

  • Page 146

    5520A Service Manual 6-3. SC600 Specifications These specifications apply only to the SC600 Option. General specifications that apply to the Calibrator Mainframe (hereafter termed the Calibrator) can be found in Chapter 1. The specifications are valid under the following conditions: The Calibrator is operated under the conditions specified in Chapter 1.

  • Page 147

    SC600 Option SC600 Specifications 6-5. Edge Specifications Table 6-2. Edge Specifications 1-Year Absolute Uncertainty, Edge Characteristics into 50 Load tcal Rise Time 300 ps (+0 ps / -100 ps) Amplitude Range (p-p) 5.0 mV to 2.5 V (2% of output + 200 V) Resolution 4 digits Adjustment Range...

  • Page 148

    5520A Service Manual 6-6. Leveled Sine Wave Specifications Table 6-3. Leveled Sine Wave Specifications Frequency Range Leveled Sine Wave Characteristics 50 kHz 50 kHz to 100 MHz to 300 MHz to into 50 (reference) 100 MHz 300 MHz 600 MHz Amplitude Characteristics (for measuring oscilloscope bandwidth) Range (p-p) 5 mV to 5.5 V...

  • Page 149

    SC600 Option SC600 Specifications 6-7. Time Marker Specifications Table 6-4. Time Marker Specifications Time Maker into 50 5s 50 ms 20 ms to 50 ns to 10 ns 5 ns to 100 ns 20 ns 2 ns 1-Year Absolute (25 + t *1000) 2.5 ppm 2.5 ppm 2.5 ppm...

  • Page 150

    5520A Service Manual 6-9. Pulse Generator Specifications Table 6-6. Pulse Generator Specifications Pulse Generator Characteristics Positive pulse into 50 Typical rise/fall times < 1.5 ns Available Amplitudes 2.5 V, 1 V, 250 mV, 100 mV, 25 mV, 10 mV Pulse Width Range 4 ns to 500 ns [1] Uncertainty [2]...

  • Page 151

    SC600 Option SC600 Specifications 6-12. Trigger Signal Specifications (Edge Function) Table 6-9. Trigger Signal Specifications (Edge Function) Edge Signal Division Typical Amplitude Typical Rise Time Typical Lead Time Frequency Ratio into 50 (p-p) 1 kHz to 10 MHz off/1 2 ns 40 ns 6-13.

  • Page 152

    5520A Service Manual 6-17. Overload Measurement Specifications Table 6-14. Overload Measurement Specifications Source Typical ‘On’ current Typical ‘Off’ current Maximum Time Limit DC or Voltage indication indication AC (1 kHz) 5 V to 9 V 100 mA to 180 mA 10 mA setable 1 s to 60 s 6-18.

  • Page 153

    SC600 Option Theory of Operation 6-22. Time Marker Mode There are 3 primary “ranges” of time marker operation: 5 s to 20 ms, 10 ms to 2 s, and 1 s to 2 ns. The 5 s to 20 ms markers are generated on the A6 DDS board and are passed to the A50 board.

  • Page 154

    5520A Service Manual LF PWB Time Mark II LF Mux. Analog Shaped 2 s - 10 s Oscilloscope Time Mark III Calibrator Pulse Shaped Trigger BNC 20 s - 1 Trigger %1,10,100,1000 HF PWB Leveled Sine Wave SCOPE Step Attenuator Module and Time Mark IV Output BNC Unleveled...

  • Page 155

    Adapter BNC(f) to 3.5 mm(m) BNC Cable (supplied with SC600) Leveled Sine Wave Amplitude Calibration and Verification Range 5 mV p-p to 5.5 V p-p Fluke 5790A Measurement Standard Frequency 50 kHz Adapter Pomona #1269 BNC(f) to Double Banana Plug...

  • Page 156

    Pomona #3288 BNC(f) to Type N(m) BNC Cable (supplied with SC600) Leveled Sine Wave Flatness (Low Frequency) Calibration and Verification AC Measurement Fluke 5790A Range 5 mV p-p to 5.5 V p-p Standard with -03 option Frequency 50 kHz to 10 MHz...

  • Page 157

    SC600 at their own site if they are required to do so. It is strongly recommended that, if possible, you return your unit to Fluke for calibration and verification. The Calibrator Mainframe must be fully calibrated prior to performing any of the SC600 calibration procedures.

  • Page 158

    5520A Service Manual thermally stabilize. The Calibrator Mainframe warm-up period is at least twice the length of time the calibrator was powered off, up to a maximum of 30 minutes. The SC600 is enabled by pressing the front panel SCOPE key. The green indicator on the SCOPE key will be illuminated when the SC600 is enabled.

  • Page 159

    SC600 Option Calibration and Verification of Square Wave Voltage Functions Table 6-16. Voltage HP3458A Settings HP 3458A Settings Voltage NPLC DELAY (topline) DELAY (baseline) Input Frequency 100 Hz .007 s .012 s 1 kHz .0007 s .0012 s 5 kHz .002 .00014 .00024...

  • Page 160

    5520A Service Manual 6-32. Setup for SC600 Edge and Wave Gen Square Wave Measurements The setup to measure the topline and baseline of Edge and Wave Generator signals differs slightly from the Voltage Square Wave method described above. The HP 3458A is triggered by a change in input level instead of an external trigger.

  • Page 161

    SC600 Option Calibration and Verification of Square Wave Voltage Functions 6-33. DC Voltage Calibration This procedure uses the following equipment: Hewlett-Packard 3458A Digital Multimeter BNC(f) to Double Banana adapter BNC cable supplied with the SC600 Note Calibrating dc voltage requires ac voltage calibration. Refer to Figure 6-3 for the proper setup connections.

  • Page 162

    5520A Service Manual Note The Calibrator Mainframe will warn when the entered value is out of bounds. If this warning occurs recheck the setup and carefully re-enter the reading insuring proper multiplier (i.e., m, u, n, p). If the warning still occurs, repair may be necessary.

  • Page 163

    SC600 Option Calibration and Verification of Square Wave Voltage Functions each step. Note that in the EDGE function, the topline is very near 0V, and the baseline is a negative voltage. 3. For each calibration step, take samples for at least two seconds, using the HP 3458A MATH functions to enter the average or mean value.

  • Page 164: Leveled Sine Wave Flatness Calibration, Low Frequency Calibration

    5520A Service Manual 5520A CALIBRATOR AC MEASUREMENT 5790A STANDARD NORMAL SCOPE INPUT 1 INPUT 2 V, , ,RTD A, -SENSE, AUX V PREV 1000V RMS MAX 1000V RMS MAX INPUT1 INPUT1 INPUT1 SHUNT INPUT1 STBY EARTH SCOPE BOOST MENU SHELL FLOATING 1000V 1V PK VIEW...

  • Page 165: High Frequency Calibration, Pulse Width Calibration

    SC600 Option Calibration and Verification of Square Wave Voltage Functions 6-40. High Frequency Calibration Connect the Calibrator Mainframe SCOPE connector to the power meter and power sensor as described under “Equipment Setup for High Frequency Flatness”. Follow these steps to calibrate high frequency Leveled Sine Wave flatness for the amplitude being calibrated.

  • Page 166: Measz Calibration

    BNC cable supplied with the SC600. The resistance and capacitance values must be known at this BNC(f) connector. Fluke uses an HP 3458A DMM to make a 4-wire ohms measurement at the BNC(f) connector to determine the actual resistance values and an HP 4192A Impedance Analyzer at 10 MHz to determine the actual capacitance value.

  • Page 167

    SC600 Option Calibration and Verification of Square Wave Voltage Functions 5520A-SC600 5520A CALIBRATOR SC600 BNC(F) Cable NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK 150V TRIG SHELLS GUARD GROUNDED 20V PK MAX 20V PK MAX yg056f.eps Figure 6-5.

  • Page 168: Verification

    The procedures in this manual have been developed to provide users the ability to verify the SC600 at their own site if they are required to do so. Fluke strongly recommends that, if possible, you return your unit to Fluke for calibration and verification.

  • Page 169: Dc Voltage Verification, Verification At 1 M, Verification At 50

    SC600 Option Verification 6-44. DC Voltage Verification This procedure uses the following equipment: Hewlett-Packard 3458A Digital Multimeter BNC(f) to Double Banana adapter feedthrough termination BNC cable supplied with the SC600 For DC voltage verification, refer to Figure 6-3 for the proper setup connections. Set the Calibrator Mainframe to SCOPE mode, with the Volt menu on the display.

  • Page 170

    5520A Service Manual Table 6-19. DC Voltage Verification at 1 M Calibrator Mainframe output HP 3458A Reading (V DC) Tolerance (V DC) 0 mV 0.00004 V 1.25 mV 4.063E-05 V -1.25 mV 4.063E-05 V 2.49 mV 4.125E-05 V -2.49 mV 4.125E-05 V 2.5 mV 4.125E-05 V...

  • Page 171: Ac Voltage Amplitude Verification, Verification At 1 M

    SC600 Option Verification Table 6-20. DC Voltage Verification at 50 Calibrator Mainframe HP 3458A Rdg (V DC) Tolerance (V DC) Reading x correction output 0 mV 0.00004 V 2.49 mV 4.623E-05 V -2.49 mV 4.623E-05 V 9.90 mV 6.475E-05 V -9.90 mV 6.475E-05 V 24.9 mV...

  • Page 172

    5520A Service Manual 1. When making measurements at 1 kHz, set the HP 3458A to DCV, NPLC = .01, TRIG EXT, and the DELAY to .0007 for measuring the topline of the wave form, and the DELAY to .0012 for measuring the baseline of the wave form. Manually lock the HP 3458A to the range that gives the most resolution for the topline measurements.

  • Page 173: Verification At 50

    SC600 Option Verification 6-49. Verification at 50 For the 50 verification, connect the Calibrator Mainframe’s SCOPE connector to the HP 3458A input, using the cable supplied with the Calibrator Mainframe, the external 50 termination, and the BNC(f) to Double Banana adapter. (The 50 termination is closest to the HP 3458A input.) Connect the Calibrator Mainframe TRIG OUT connector to the HP 3458A Ext Trig connector located on the rear of that instrument.

  • Page 174: Ac Voltage Frequency Verification

    5520A Service Manual 6-50. AC Voltage Frequency Verification This procedure uses the following equipment: PM 6680 Frequency Counter with an ovenized timebase (Option PM 9690 or PM 9691) BNC cable supplied with the SC600 5520A-SC600 SC600 Cable 5520A CALIBRATOR At 50 MHZ NORMAL SCOPE V, , ,RTD...

  • Page 175: Edge Amplitude Verification, Edge Frequency Verification

    SC600 Option Verification 6-51. Edge Amplitude Verification For the Edge Amplitude verification, connect the Calibrator Mainframe’s SCOPE connector to the HP 3458A input, using the cable supplied with the Calibrator Mainframe, the external 50 termination, and the BNC(f) to Double Banana adapter. (The 50 termination is closest to the HP 3458A input.) 1.

  • Page 176: Edge Duty Cycle Verification, Edge Rise Time Verification

    5520A Service Manual Refer to Figure 6-6 for proper setup connections. Set the Calibrator Mainframe to SCOPE mode, with the Edge menu on the display. Press on the Calibrator Mainframe to activate the output. Then follow these steps to verify Edge frequency. 1.

  • Page 177

    SC600 Option Verification 3 dB attenuator, 3.5 mm (m/f) BNC(f) to 3.5 mm(m) adapter (2) BNC cable supplied with the SC600 second BNC cable Connect the BNC cable supplied with the SC600 to the Calibrator Mainframe’s SCOPE connector. Connect the other end of the BNC cable to one BNC(f) to 3.5 mm(m) adapter then to the DSO’s sampling head through the 3 dB attenuator.

  • Page 178: Edge Abberation Verification

    5520A Service Manual 4. The edge rise time measured should be less than the time indicated in Table 6-26. Rise time measures between these two points om033i.eps Figure 6-8. Edge Rise Time Table 6-26. Edge Rise Time Verification Calibrator Mainframe Output Vertical Tolerance 11801...

  • Page 179: Tunnel Diode Pulser Drive Amplitude Verification, Leveled Sine Wave Amplitude Verification

    SC600 Option Verification Table 6-27. Edge Aberrations Time from 50% of Rising Edge Typical Edge Aberrations 0 - 2 ns < 32 mV (3.2%) 2 - 5 ns < 22 mV (2.2%) 5 - 15 ns < 12 mV (1.2%) >...

  • Page 180

    5520A Service Manual Set the Calibrator Mainframe to SCOPE mode, with the Levsine menu on the display. Press on the Calibrator Mainframe to activate the output. Then follow these steps to verify the leveled sine wave amplitude. 1. Connect the BNC cable to the Calibrator Mainframe’s SCOPE connector. Connect the other end of the BNC cable to the 50 feedthrough termination then to the 5790A INPUT 2 using the BNC(f) to Double Banana adapter.

  • Page 181: Leveled Sine Wave Frequency Verification

    SC600 Option Verification 6-58. Leveled Sine Wave Frequency Verification This procedure uses the following equipment: PM 6680 Frequency Counter with a prescaler for the Channel C input (Option PM 9621, PM 9624, or PM 9625) and ovenized timebase (Option PM 9690 or PM 9691) BNC(f) to Type N(m) adapter BNC cable supplied with the SC600...

  • Page 182: Leveled Sine Wave Harmonics Verification

    5520A Service Manual 6-59. Leveled Sine Wave Harmonics Verification This procedure uses the following equipment: Hewlett-Packard 8590A Spectrum Analyzer BNC(f) to Type N(m) adapter BNC cable supplied with the SC600 Refer to Figure 6-9 for proper setup connections. HP 8590A 5520A-SC600 5520A CALIBRATOR...

  • Page 183

    SC600 Option Verification Table 6-31. Leveled Sine Wave Harmonics Verification Calibrator Mainframe Output Frequency Harmonic HP 8590A Reading (dB) Tolerance (@ 5.5 V p-p) 50 kHz -33 dB 50 kHz 3, 4, 5 -46 dB 100 kHz -33 dB 100 kHz 3, 4, 5 -38 dB 200 kHz...

  • Page 184: Leveled Sine Wave Flatness Verification, Equipment Setup For Low Frequency Flatness

    5520A Service Manual 6-60. Leveled Sine Wave Flatness Verification Leveled Sine Wave flatness verification is divided into two frequency bands: 50 kHz to 10 MHz (low frequency) and > 10 MHz to 600 MHz (high frequency). The equipment setups are different for each band. Leveled Sine Wave flatness is measured relative to 50 kHz.

  • Page 185

    SC600 Option Verification Connect the HP 437B Power Meter to either the 8482A or the 8481D Power Sensor as shown in Figure 6-11. For more information on connecting the two instruments, see the power meter and power sensor operators manuals. Connect the power meter/power sensor combination to the SCOPE connector on the Calibrator Mainframe, as shown in Figure 6-12.

  • Page 186: Low Frequency Verification, High Frequency Verification

    5520A Service Manual 6-63. Low Frequency Verification This procedure provides an example of testing low frequency flatness using a 5.5 V output. Follow the same procedure for testing other amplitudes, only compare results against the flatness specification listed in Table 6-32. 1.

  • Page 187

    SC600 Option Verification 3. Enter 10 MHz into the Calibrator Mainframe. Allow the power meter reading to stabilize, then enter the power meter’s reading in Column B of Table 6-33. 4. Enter the next frequency listed in Table 6-33. Allow the power meter’s reading to stabilize, then enter the reading into Column A of the table.

  • Page 188: Time Marker Verification

    5520A Service Manual 6-65. Time Marker Verification This procedure uses the following equipment: PM 6680 Frequency Counter with a prescaler for the Channel C input (Option PM 9621, PM 9624, or PM 9625) and ovenized timebase (Option PM 9690 or PM 9691) BNC(f) to Type N(m) adapter BNC cable supplied with the SC600 Refer to Figure 6-6 for the proper setup connections.

  • Page 189: Wave Generator Verification

    SC600 Option Verification PM 6680 PM 6680 Reading Calibrator PM 6680 Settings Reading Mainframe Tolerance Channel Filter (Frequency) (Period) Period 0.3489454 s 0.0582996 s 50.0 ms 3.872E-05 s 20.0 ms 5E-08 s 10.0 ms 2.5E-08 s 100 ns 2.5E-13 s 50.0 ns 1.25E-13 s 20.0 ns...

  • Page 190: Verification At 1 M, Verification At 50

    5520A Service Manual and the frequency to 1 kHz. Then follow these steps to verify the wave generator function. 6-67. Verification at 1 M Set the Calibrator Mainframe impedance to 1 M (The blue softkey under SCOPE Z toggles the impedance between 50 and 1 M ).

  • Page 191

    SC600 Option Verification Table 6-35. Wave Generator Verification at 1 M Calibrator Calibrator 5790A 5790A Reading x Mainframe Conversion Tolerance Mainframe Reading Conversion Factor output Factor (V p-p) Wave Type (V rms) (V p-p) (@ 10 kHz) square 1.8 mV 2.0000 0.000154 V square...

  • Page 192

    5520A Service Manual Table 6-36. Wave Generator Verification at 50 Calibrator Calibrator 5790A 5790A Rdg x Mainframe Mainframe Reading Conversion Conversion V p-p value x Tolerance Wave output (V rms) Factor Factor (V p-p) (V p-p) correction Type (10 kHz) square 1.8 mV 2.0000...

  • Page 193: Pulse Width Verification

    SC600 Option Verification 6-69. Pulse Width Verification The following equipment is used to verify the pulse width. High Frequency Digital Storage Oscilloscope: Tektronix 11801 with Tektronix SD- 22/26 sampling head 3 dB attenuator, 3.5 mm (m/f) BNC(f) to 3.5 mm(m) adapter (2) BNC cable supplied with the SC600 second BNC cable Refer to Figure 6-7 for proper setup connections.

  • Page 194: Pulse Period Verification, Measz Resistance Verification

    BNC cable supplied with the SC600. The resistance values must be known at this BNC(f) connector. Fluke uses an HP 3458A DMM to make a 4-wire ohms measurement at the BNC(f) connector to determine the actual resistance values.

  • Page 195: Measz Capacitance Verification

    BNC(f) connector. The capacitance values must be determined at a 10 MHz oscillator frequency. Fluke uses an HP 4192A Impedance Analyzer at 10 MHz to determine the actual capacitance values.

  • Page 196: Overload Function Verification

    5520A Service Manual 5. Allow the Calibrator Mainframe reading to stabilize, then record the Calibrator Mainframe capacitance reading for each nominal value listed in Table 6-40. Compare the Calibrator Mainframe capacitance readings to the actual capacitance values and the tolerance column of Table 6-40. Table 6-40.

  • Page 197: Sc600 Hardware Adjustments, Equipment Required, Adjusting The Leveled Sine Wave Function, Equipment Setup

    SC600 Option SC600 Hardware Adjustments Set the Calibrator Mainframe to SCOPE mode, with the Overload menu on the display. Connect the BNC cable to the Calibrator Mainframe SCOPE connector. Then follow these steps to verify the overload function. 1. Connect the 50 feedthrough termination to the end of the BNC cable.

  • Page 198: Adjusting The Leveled Sine Wave Vco Balance, Adjusting The Leveled Sine Wave Harmonics

    5520A Service Manual Refer to Figure 6-9 for setup connections and connect the Calibrator Mainframe to the Spectrum Analyzer. Adjust the Spectrum Analyzer so that it displays one peak across its horizontal center line. The far right of the peak is fixed at the far right of the center line, as shown below.

  • Page 199: Adjusting The Aberrations For The Edge Function

    SC600 Option SC600 Hardware Adjustments Note This procedure should only be used for adjusting the leveled sine wave harmonics. Do not use this procedure as a verification test. The specifications in this procedure are not valid for verification. 1. Set the Spectrum Analyzer to the parameters listed below. Spectrum Analyzer Setup Start Frequency 50 MHz...

  • Page 200: Equipment Setup, Adjusting The Edge Aberrations

    Note To verify the edge aberrations back to national standards, you should send your Calibrator Mainframe to Fluke, or other facility that has established traceability for aberrations. Fluke, for example, has a reference pulse that is sent to the National Institute of Standards and Technology (NIST) for characterization.

  • Page 201

    SC600 Option SC600 Hardware Adjustments 11. Set the oscilloscope vertical to 5 mV/div. Check the aberrations. 12. Check for rise time < 300 ps at 250 mV, 1 V, and 2.5 V outputs. 1st Aberration 2nd Aberration 3rd Aberration om050f.eps Figure 6-17.

  • Page 202

    5520A Service Manual 6-62...

  • Page 203: Sc300 Option

    Chapter 6 SC300 Option Title Page 6-83. Introduction................... 6-65 6-84. Maintenance..................6-65 6-85. SC300 Specifications................6-66 6-86. Voltage Function Specifications ............6-66 6-87. Edge Function Specifications............6-67 6-88. Leveled Sine Wave Function Specifications........6-68 6-89. Time Marker Function Specifications..........6-69 6-90.

  • Page 204

    5520A Service Manual 6-118. AC Voltage Frequency Verification ..........6-89 6-119. Edge Amplitude Verification ............6-90 6-120. Edge Frequency Verification............6-91 6-121. Edge Duty Cycle Verification ............6-92 6-122. Edge Rise Time Verification............6-92 6-123. Edge Abberation Verification ............6-94 6-124.

  • Page 205: Maintenance, Introduction

    Table 6-41 under “Equipment Required for Calibration and Verification.” The calibration and verification procedures in this chapter are not the ones Fluke uses at the factory. These procedures have been developed to provide you with the ability to calibrate and verify the SC300 at your own site if necessary.

  • Page 206: Sc300 Specifications, Voltage Function Specifications

    Calibrator Mainframe’s frequency output to accommodate for this waveform. For example, the Fluke ScopeMeter® has a calibration point at 1 kHz (1 ms), 100 V, peak-to-peak. To output a period of 1 ms at 100 V peak-to-peak, use a frequency of 356 Hz.

  • Page 207: Edge Function Specifications

    SC300 Option SC300 Specifications 6-87. Edge Function Specifications 1-Year Absolute Uncertainty, Edge Characteristics into 50 tcal Amplitude Range (p-p) 4.5 mV to 2.75 V (2% of output + 200 V) Resolution 4 digits Adjustment Range 10% around each sequence value (indicated below) Sequence 5 mV, 10 mV, 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1 V,...

  • Page 208: Leveled Sine Wave Function Specifications

    5520A Service Manual 6-88. Leveled Sine Wave Function Specifications Frequency Range Leveled Sine Wave Characteristics into 50 50 kHz Reference 50 kHz to 100 MHz 100 to 300 MHz [1] Amplitude Characteristics Range (p-p) 5 mV to 5.5 V Resolution <...

  • Page 209: Time Marker Function Specifications, Wave Generator Specifications

    SC300 Option SC300 Specifications 6-89. Time Marker Function Specifications Time Marker into 50 5s to 100 s 50 s to 2 s 1 s to 20 ns 10 ns to 2 ns 1-Year Absolute (25 + t*1000) (25 + t*15,000) 25 ppm 25 ppm Uncertainty, tcal...

  • Page 210: Trigger Signal Specifications For The Time Marker Function, Trigger Signal Specifications For The Edge Function

    5520A Service Manual 6-91. Trigger Signal Specifications for the Time Marker Function Time Marker Amplitude into Typical Rise Time Division Ratio [1] Period (p-p) 5 to 50 ms off/1 2 ns 20 ms to 100 ns off/1/10/100 2 ns 50 to 10 ns off/10/100 2 ns 5 to 2 ns...

  • Page 211: Voltage Mode, Theory Of Operation, Edge Mode, Leveled Sine Wave Mode

    SC300 Option Theory of Operation 6-93. Theory of Operation The following discussion provides a brief overview of the following SC300 operating modes: voltage, edge, leveled sine wave, time marker and wave generator. This discussion will allow you to identify which of the main plug-in boards of the Calibrator Mainframe are defective.

  • Page 212: Time Marker Mode, Wave Generator Mode

    5520A Service Manual 6-97. Time Marker Mode There are several “ranges” of time marker operation: 5 s to 50 ms, 20 ms to 100 ns, 50 ns to 20 ns, 10 ns and 5 to 2 ns. The 5 s to 50 ms markers are generated on the A6 DDS board and are passed to the A50 board.

  • Page 213

    SC300 Option Theory of Operation LF PWB Time Mark II LF Mux. Analog Shaped 2 s - 10 s Time Mark III Oscilloscope Calibrator Pulse Shaped Trigger BNC 20 s - 1 Trigger %1,10,100,1000 HF PWB SCOPE Leveled Sine Wave Step Attenuator Module and Time Mark IV Output BNC...

  • Page 214

    Adapter BNC(f) to 3.5 mm(m) BNC Cable (supplied with SC300) Leveled Sine Wave Amplitude Calibration and Verification Range 5 mV p-p to 5.5 V p-p Fluke 5790A Measurement Standard Frequency 50 kHz Adapter Pomona #1269 BNC(f) to Double Banana Plug...

  • Page 215

    Pomona #3288 BNC(f) to Type N(m) BNC Cable (supplied with SC300) Leveled Sine Wave Flatness (Low Frequency) Calibration and Verification AC Measurement Fluke 5790A Range 5 mV p-p to 5.5 V p-p Standard with -03 option Frequency 50 kHz to 10 MHz...

  • Page 216: Sc300 Calibration Setup

    SC300 at their own site if they are required to do so. It is strongly recommended that, if possible, you return your unit to Fluke for calibration and verification. The unit should be returned with its cable. The Calibrator Mainframe must be fully calibrated prior to performing any of the SC300 calibration procedures.

  • Page 217: Overview Of Hp3458a Operation, Setup For Square Wave Measurements

    SC300 Option Calibration and Verification of Square Wave Functions The Calibrator Mainframe first prompts the user to calibrate the DC Voltage function. If another function is to be calibrated, alternately press the OPTIONS and NEXT SECTION blue softkeys until the desired function is reached. 6-101.

  • Page 218: Dc Voltage Calibration

    5520A Service Manual HP 3458A 5520A-SC300 SC300 Cable 5520A CALIBRATOR NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V Feedthrough Termination as 1000V 1V PK required by the 150V BNC(F) to TRIG calibration procedure) Double Banana Adapter SHELLS GUARD GROUNDED 20V PK MAX 20V PK MAX yg122f.eps...

  • Page 219: Ac Square Wave Voltage Calibration

    SC300 Option Calibration and Verification of Square Wave Functions 4. Ensure the HP 3458A reading is 0.0 V DC 100 V. 5. Press the GO ON blue softkey. 6. Calibration voltages 33 V and greater will automatically put the Calibrator Mainframe output in standby.

  • Page 220: Edge Amplitude Calibration, Leveled Sine Wave Amplitude Calibration

    5520A Service Manual Note The Calibrator Mainframe will warn when the entered value is out of bounds. If this warning occurs recheck the setup and carefully re-enter the reading insuring proper multiplier (i.e., m, u, n, p). If the warning still occurs, repair may be necessary.

  • Page 221

    SC300 Option Calibration and Verification of Square Wave Functions 1. Connect the BNC cable to the Calibrator Mainframe’s SCOPE connector. Connect the other end of the BNC cable to the 50 feedthrough termination then to the 5790A INPUT 2 using the BNC(f) to Double Banana adapter. 2.

  • Page 222: Low Frequency Calibration, High Frequency Calibration

    5520A Service Manual Press the OPTIONS and NEXT SECTION blue softkeys until the display reads “Set up to measure leveled sine flatness”. 6-109. Low Frequency Calibration Connect the Calibrator Mainframe SCOPE connector to the 5790A WIDEBAND input as described under “Equipment Setup for Low Frequency Flatness”. Follow these steps to calibrate low frequency Leveled Sine Wave flatness for the amplitude being calibrated: 1.

  • Page 223

    The procedures in this manual have been developed to provide users the ability to verify the SC300 at their own site if they are required to do so. Fluke strongly recommends that, if possible, you return your unit to Fluke for calibration and verification.

  • Page 224

    5520A Service Manual 2. Program the Calibrator Mainframe to output the voltage listed in Table 6-44. Press on the Calibrator Mainframe to activate the output. 3. Allow the HP 3458A reading to stabilize, then record the HP 3458A reading for each voltage in Table 6-44.

  • Page 225

    SC300 Option Verification Table 6-44. DC Voltage Verification at 50 1-Year Spec. Nominal Value (dc) Measured Value (dc) Deviation (mV) (mV) 0.0 mV 0.10 5.0 mV 0.11 -5.0 mV 0.11 10.0 mV 0.12 -10.0 mV 0.12 22.0 mV 0.15 -22.0 mV 0.15 25.0 mV 0.16...

  • Page 226

    5520A Service Manual 6-115. AC Voltage Amplitude Verification This procedure uses the following equipment: Hewlett-Packard 3458A Digital Multimeter BNC(f) to Double Banana adapter feedthrough termination (as required) BNC cable supplied with the SC300 For ac voltage amplitude verification, refer to Figure 6-19 for the proper setup connections.

  • Page 227

    SC300 Option Verification Table 6-45. AC Voltage Verification at 1 M Nominal Value (p-p) Frequency Measured Value (p-p) Deviation (mV) 1-Year Spec. (mV) 5.0 mV 10 Hz 0.11 5.0 mV 100 Hz 0.11 5.0 mV 1 kHz 0.11 5.0 mV 5 kHz 0.11 5.0 mV...

  • Page 228

    5520A Service Manual 6-117. Verification at 50 For the 50 verification, connect the Calibrator Mainframe’s SCOPE connector to the HP 3458A input, using the cable supplied with the Calibrator Mainframe, the external 50 termination, and the BNC(f) to Double Banana adapter. (The 50 termination is closest to the HP 3458A input.) Make sure the Calibrator Mainframe impedance is set to 50 .

  • Page 229

    SC300 Option Verification Table 6-46. AC Voltage Verification at 50 (cont.) Nominal Value Measured Value Deviation 1-Year Spec. Frequency (p-p) (p-p) (mV) (mV) 500.0 mV 10 kHz 1.35 1.0 V 100 Hz 2.60 1.0 V 1 kHz 2.60 1.0 V 10 kHz 2.60 2.0 V...

  • Page 230

    5520A Service Manual 1. Set the PM 6680’s FUNCTION to measure frequency on channel A with auto trigger, measurement time set to 1 second or longer, 1M impedance, and filter off. 2. Using the BNC cable, connect the SCOPE connector on the Calibrator Mainframe to PM 6680 channel A.

  • Page 231: Edge Frequency Verification

    SC300 Option Verification Table 6-48. Edge Amplification Verification Calibrator Peak-to- HP 3458A Topline Baseline Peak-to- Tolerance Mainframe Edge Peak x Range Reading Reading Peak ( V) Output Correction 100 mV, 1 kHz 100 mV dc 0.0022 1.00V, 1 kHz 1 V dc 0.0202 5 mV, 10 kHz 100 mV dc...

  • Page 232: Edge Rise Time Verification, Edge Duty Cycle Verification

    5520A Service Manual 6-121. Edge Duty Cycle Verification This procedure uses the following equipment: PM 6680 Frequency Counter BNC cable supplied with the SC300 Refer to Figure 6-21 for proper setup connections. Set the Calibrator Mainframe to SCOPE mode, with the Edge menu on the display. Press on the Calibrator Mainframe to activate the output.

  • Page 233

    SC300 Option Verification 5520A-SC300 Tek 11801 With SD26 Sampling Head 5520A CALIBRATOR SC300 Cable 3 dB Attenaator 3.5 mm (m/f) NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK 150V TRIG SHELLS GUARD GROUNDED 20V PK MAX 20V PK MAX BNC(F) to 3.5 mm (m)

  • Page 234

    5520A Service Manual Rise time measures between these two points om033i.eps Figure 6-23. Edge Rise Time Table 6-50. Edge Rise Time Verification Calibrator Mainframe Output Vertical Tolerance 11801 Corrected Axis Voltage Frequency Reading Reading (mV/div) 250 mV 1 MHz 20.0 <...

  • Page 235: Leveled Sine Wave Amplitude Verification

    SC300 Option Verification Table 6-51. Edge Aberrations Time from 50% of Rising Edge Typical Edge Aberrations 0 - 10 ns < 22 mV (2.2%) 10 - 30 ns < 12 mV (1.2%) > 30 ns < 7 mV (0.7%) 6-124. Leveled Sine Wave Amplitude Verification This procedure uses the following equipment: 5790A AC Measurement Standard BNC(f) to Double Banana Plug adapter...

  • Page 236

    5520A Service Manual Table 6-52. Leveled Sine Wave Amplitude Verification Calibrator Mainframe 5790A Reading 5790A Reading x 2.8284 Tolerance Output (V rms) (V p-p) (V p-p) (@ 50 kHz) 5.0 mV 0.4 mV 10.0 mV 0.5 mV 20.0 mV 0.7 mV 40.0 mV 1.1 mV 50.0 mV...

  • Page 237

    SC300 Option Verification Table 6-53. Leveled Sine Wave Frequency Verification Calibrator Mainframe PM 6680 Settings PM 6680 Reading Frequency Tolerance Channel Filter (Frequency) (Output @ 5.5 V p-p) 50 kHz 1.25 Hz 500 kHz 12.5 Hz 5 MHz 125.0 Hz 50 MHz 1250 Hz 500 MHz...

  • Page 238

    5520A Service Manual 3. Set HP 8590A start frequency to the Calibrator Mainframe output frequency. Set HP 8590A stop frequency to 10 times the Calibrator Mainframe output frequency. Set the HP 8590A reference level at +19 dBm. 4. Record the harmonic level reading for each frequency and harmonic listed in Table 6-54.

  • Page 239: Equipment Setup For Low Frequency Flatness, Leveled Sine Wave Flatness Verification

    SC300 Option Verification 6-127. Leveled Sine Wave Flatness Verification Leveled Sine Wave flatness verification is divided into two frequency bands: 50 kHz to 10 MHz (low frequency) and > 10 MHz to 300 MHz (high frequency). The equipment setups are different for each band. Leveled Sine Wave flatness is measured relative to 50 kHz.

  • Page 240

    5520A Service Manual Connect the HP 437B Power Meter to either the 8482A or the 8481D Power Sensor as shown in Figure 6-26. For more information on connecting the two instruments, see the power meter and power sensor operators manuals. Connect the power meter/power sensor combination to the SCOPE connector on the Calibrator Mainframe, as shown in Figure 6-27.

  • Page 241: High Frequency Verification, Low Frequency Verification

    SC300 Option Verification 6-130. Low Frequency Verification This procedure provides an example of testing low frequency flatness using a 5.5 V output. Follow the same procedure for testing other amplitudes, only compare results against the flatness specification listed in Table 6-55. 1.

  • Page 242

    5520A Service Manual 3. Enter 10 MHz into the Calibrator Mainframe. Allow the power meter reading to stabilize, then enter the power meter’s reading in Column B of Table 6-56. 4. Enter the next frequency listed in Table 6-56. Allow the power meter’s reading to stabilize, then enter the reading into Column A of the table.

  • Page 243

    SC300 Option Verification 6-132. Time Marker Verification This procedure uses the following equipment: PM 6680 Frequency Counter with a prescaler for the Channel C input (Option PM 9621, PM 9624, or PM 9625) and ovenized timebase (Option PM 9690 or PM 9691) BNC(f) to Type N(m) adapter BNC cable supplied with the SC300 Refer to Figure 6-21 for the proper setup connections.

  • Page 244

    5520A Service Manual Table 6-57. Time Marker Verification (cont.) Calibrator PM 6680 Settings PM 6680 1/(PM 6680 Mainframe Reading Reading) Tolerance Channel Impedance Filter Period (Frequency) ( Period) 100 s 2.650 ns 50.0 s 1.287 ns 20.0 s 506.000 ps 10.0 s 252.000 ps 5.00 s...

  • Page 245

    SC300 Option Verification 5520A-SC300 5520A CALIBRATOR SC300 Cable NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V 1000V 1V PK 150V TRIG SHELLS GUARD GROUNDED BNC (F) to 20V PK MAX 20V PK MAX Double Banana Feed Through Adapter Termination yg126f.eps Figure 6-28.

  • Page 246

    5520A Service Manual 4. Program the Calibrator Mainframe to output the wave type and voltage listed in Table 6-59. 5. Allow the 5790A reading to stabilize, then record the 5790A rms reading for each wave type and voltage in Table 6-59. 6.

  • Page 247: Equipment Required, Sc300 Hardware Adjustments

    SC300 Option SC300 Hardware Adjustments Table 6-59. Wave Generator Verification at 50 Calibrator Calibrator 5790A 5790A Reading x Mainframe Conversion Tolerance Mainframe Reading Conversion Factor output Factor (V p-p) Wave Type (V rms) (V p-p) (@ 10 kHz) square 5.0 mV 2.0000 250.00 V square...

  • Page 248: Adjusting The Leveled Sine Wave Function, Equipment Setup, Adjusting The Leveled Sine Wave Harmonics

    5520A Service Manual Oscilloscope Mainframe and Sampling Head (Tektronix 11801 with SD-22/26 or Tektronix TDS 820 with 8 GHz bandwidth) 10 dB Attenuator (Weinschel 9-10 (SMA), or Weinschel 18W-10, or equivalent) Cable provided with SC300 Spectrum Analyzer (Hewlett-Packard 8590A) 6-138. Adjusting the Leveled Sine Wave Function There is one adjustment procedure that need to be made for the leveled sine wave function.

  • Page 249: Adjusting The Edge Aberrations, Adjusting The Aberrations For The Edge Function, Equipment Setup

    SC300 Option SC300 Hardware Adjustments -34 dBc -39 dBc 3rd harmonic 2nd harmonic yg127f.eps Figure 6-29. Adjusting the Leveled Sine Wave Harmonics 6-141. Adjusting the Aberrations for the Edge Function Adjustments need to be made after repair to the edge function to adjust the edge aberrations.

  • Page 250

    5520A Service Manual 6. Readjust A90R13 if necessary to keep the edge signal at 10 ns to be at the reference level. 7. Readjust A90R36 ,A90R35 or A90R12 to obtain equal amplitudes of the aberrations displayed during the first 10 ns to be equally above and below the reference level. Check the aberrations , compare with specifications.

  • Page 251

    Index Reports, generating, 3-34 Resistance, 3-21 —A— SC300, 6-65, 6-76 ac current SC600, 6-5, 6-17 (non-sinewave) specifications, 1-29 MeasZ, 6-26 (sinewave) extended bandwidth specifications, Pulse Width, 6-25 1-28 capacitance (sinewave) specifications, 1-14 specifications, 1-16 squarewave characteristics (typical), 1-31 Capacitance trianglewave characteristics (typical), 1-31 verification, 3-48 AC Current Verification, 3-47...

  • Page 252

    5520A Service Manual MeasZ function —E— Calibration, 6-26 Edge Duty Cycle function MeasZ Function Verification, 6-36, 6-92 Capacitance Specifications, 6-11 Edge Frequency function Resistance Specifications, 6-11 Verification, 6-35, 6-91 MeasZ Resistance Edge function Verification, 6-54 Rise time verification, 6-36, 6-92 Theory of Operation, 6-12, 6-71 —O—...

  • Page 253

    Index (continued) Required equipment for calibration and verification, temperature calibration (RTD), 1-18 temperature calibration (thermocouple), 1-17 resistance Specifications specifications, 1-11 SC600, 6-6 Resistance Square Wave Voltage Function Verification, 3-39 Trigger Specifications, 6-11 Synthesized Impedance assembly (A5) Theory, 2-4 —S— SC300. Seealso —T—...

  • Page 254

    5520A Service Manual Specifications, 6-6 Wave Generator function Voltage assembly (A8) Theory of Operation, 6-13 Theory, 2-7 Verification, 6-48, 6-104 Voltage function Wave Generator Function Theory of Operation, 6-71 Specifications, 6-9 Voltage Function www address, 5-3 Specifications, 6-66 —Z— —W— Zeroing, 3-35 Wave Generator Specifications, 6-69...

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