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Fluke 5080A Service Manual

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5080A
Calibrator
Service Manual
March 2016
© 2016 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

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Summary of Contents for Fluke 5080A

  • Page 1 5080A Calibrator Service Manual March 2016 © 2016 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. 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 OPERATOR SAFETY SUMMARY WARNING HIGH VOLTAGE is used in the operation of this equipment LETHAL VOLTAGE may be present on the terminals, observe all safety precautions! To avoid electrical shock hazard, the operator should not electrically contact the output HI or sense HI terminals or circuits connected to these terminals. During operation, lethal voltages of up to 1020 V ac or dc may be present on these terminals.

  • Page 5: Table Of Contents

    Introduction .................... 1 Safety Information ................. 2 Product Manuals ................... 4 Operators Manual ................4 Service Manual .................. 4 How to Contact Fluke Calibration ............5 Specifications ..................5 General Specifications ............... 5 Detailed Specifications ..............6 DC Voltage ..................6 DC Current ..................
  • Page 6 5080A Service Manual Low Resistance Source (LVR) Verification ........30 High Resistance Source (HVR) Verification ........31 Scope Option Verification Tables ............33 Mainframe Calibration ................43 Required Calibration Test Equipment ..........44 Start Calibration ................. 44 DC Volts Calibration (NORMAL Output) ..........45 AC Volts Calibration (NORMAL Output) ..........
  • Page 7 List of Tables Table Title Page Symbols ..................... 2 Accessories and Options ................22 Test Equipment for Verification and Calibration ........23 Verification Tests for DC Voltage (Normal) ..........24 Verification Tests for DC Voltage (AUX) ........... 24 Verification Tests for DC Current .............. 25 Verification Tests for 4-Wire Resistance ...........
  • Page 8 5080A Service Manual Calibration Steps for AC Current ............... 52 Calibration Steps for AUX DC Current ............54 Calibration Steps for AUX AC Volts ............55 Test Equipment Required for Resistance Calibration ....... 55 Calibration Steps for Resistance ............... 56 Required Test Equipment for SC200 Calibration ........
  • Page 9 DC Voltage Adjustment Setup ..............46 AC Voltage Adjustment Setup ..............47 DC Current Adjustment Setup ..............49 Connections for Calibrating AC Current with a Fluke A40 Shunt ....50 Sample MET/CAL Program ............... 53 Connections for Calibrating 4-Wire Resistance ......... 56 Connections for Calibrating 2-Wire Resistance .........
  • Page 10 5080A Service Manual...

  • Page 11: Introduction

    Introduction XW Warning If the 5080A Calibrator is used in a manner not specified by this manual or other documentation provided by Fluke Calibration, the protection provided by the Calibrator may be impaired. The 5080A Calibrator (the Product or the Calibrator) is a fully programmable precision source of: •...

  • Page 12: Safety Information

    5080A Service Manual Safety Information This Product complies with: • ANSI/ISA-61010-1 (82.02.01) • CAN/CSA C22.2 No. 61010-1-04 • ANSI/UL 61010-1 • EN 61010-1 Symbols used on the Product and in this manual are explained in Table 1. Table 1. Symbols...
  • Page 13 Calibrator Safety Information A Warning identifies conditions and procedures that are dangerous to the user. A Caution identifies conditions and procedures that can cause damage to the Product or the equipment under test. XW Warning To prevent possible electrical shock, fire, or personal injury: •...

  • Page 14: Product Manuals

    • Product Manual CD The Operators and Service manuals are shipped with the Product. To order replacements, see How to Contact Fluke Calibration. Operators Manual The Operators Manual includes installation and operation instructions of the Product from the front-panel keys and in remote configurations. This manual also has a glossary of calibration, specifications, and error code information.

  • Page 15: How To Contact Fluke Calibration

    All specifications are valid after a warm-up period of 30 minutes, or twice the time since last warmed up, to a maximum of 30 minutes. For example, if the 5080A has been turned off for 5 minutes, the warm-up period is 10 minutes.

  • Page 16: Detailed Specifications

    5080A Service Manual International ............IEC 61326-1: Basic Electromagnetic Environment CISPR 11: Group 1, Class A Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency energy that is necessary for the internal function of the equipment itself. Class A: Equipment is suitable for use in all establishments other than domestic and those directly connected to a low-voltage power supply network that supplies buildings used for domestic purposes.

  • Page 17: Dc Current

    60 minute period where T is the temperature in °C (room temperature is about 23 °C) and I is the output current in Amps. For example, 17 A at 23 °C could be provided for 60-17-23 = 20 minutes each hour. When the 5080A is outputting currents between 5 and 11 amps for long periods, the internal self-heating reduces the duty cycle.

  • Page 18: Resistance

    5080A Service Manual Resistance Specification of Characterized Max. Difference Value, tcal ±5 °C, Characterized 2-Wire Full Spec. Load Max. Peak ±(% of value or Ω) Nominal Value [4][5] Value to Adder, ±(Ω) Range, I to I Current Nominal Value, 90 days 1 year ±...

  • Page 19: Ac Voltage (Sine Wave)

    Calibrator Specifications AC Voltage (Sine Wave) Specification, tcal ±5 °C Max. Distortion & Noise 10 Hz to 100 kHz ±(% of output + μV) Max. Range Frequency Resolution Bandwidth Burden 90 days 1 year ±(% of output + floor) 1.00 to 45 to 65 Hz 0.31 % + 60 0.33 % + 60...

  • Page 20: Ac Current (Sine Wave)

    60 minute period where T is the temperature in °C (room temperature is about 23 °C) and I is the output current in amps. For example, 17 A at 23 °C could be provided for 60-17-23 = 20 minutes each hour. When the 5080A is outputting currents between 5 and 11 amps for long periods, the internal self-heating reduces the duty cycle.

  • Page 21: Dc Power Summary

    Calibrator Specifications DC Power Summary Currents 0.33 to 3.2999 mA 3.3 to 329.99 mA 0.33 to 2.9999 A 3 to 20.5 A Time Voltage Specification, tcal ±5 °C, ±(% of watts output) 90 days 33 mV to 1020 V 0.14 0.11 0.21 0.52...

  • Page 22: Phase

    5080A Service Manual Phase [1][2] Specification, 1 year, tcal ±5 °C, ±(ΔΦ) 45 TO 65 Hz 65 to 500 Hz 500 Hz to 1 kHz 0.25 ° 1.5 ° 5.0 ° See Power and Dual Output Limit specifications for applicable outputs.

  • Page 23: Frequency

    Calibrator Theory of Operation PF Adder Watts Adder for PF = 0.5 (Φ=60) at 50 Hz is 0.76 % (see “Phase Specifications”). Spec Total Watts Output Specification = power VARs When the Power Factor approaches 0.0, the watts output specification becomes unrealistic because the dominant characteristic is the VARs (volts-amps-reactive) output.

  • Page 24: Functional Block Diagram

    5080A Service Manual FRONT Motherboard (A3) gru116f.eps Figure 1. Internal Layout Functional Block Diagram Figures 2 and 3 show the block diagram of the Product.
  • Page 25 Calibrator Theory of Operation Figure 2. Block Diagram, Part 1...
  • Page 26 5780A/AN Service Manual Figure 3. Block Diagram, Part 2...

  • Page 27: Encoder Pca (A2)

    Calibrator Theory of Operation Encoder PCA (A2) The Encoder PCA (A2) controls the front panel keyboard, knob, and displays. It has its own microprocessor and communicates with the Main CPU PCA (A9) on the Rear Panel through a serial link. Memory for the Encoder PCA is contained in EPROM.

  • Page 28: Dds Pca (A6)

    5080A Service Manual DDS PCA (A6) The DDS (Direct Digital Synthesis) PCA (A6) has these functional blocks: • References for all voltage and current functions • Gain elements for voltage functions and thermocouple measurement and sources • An A/D (Analog-to-Digital) measurement system to monitor all functions •...

  • Page 29: Current Pca (A7)

    Calibrator Theory of Operation Current PCA (A7) The Current PCA outputs six current ranges (330 μA, 3.3 mA, 33 mA, 330 mA, 3 A, and 20 A) and three voltage ranges (330 mV, 3.3 V, and 5 V) to the AUX outputs.

  • Page 30: Voltage Pca (A8)

    5080A Service Manual Voltage PCA (A8) The Voltage PCA (A8) supplies dc and ac voltage outputs in the range 3.3 V and above. It includes transformers and HV rectification for 330V and 1kV ACV and DCV ranges. It also supplies all the inguard supplies referenced to SCOM. See the “Power Supplies”...

  • Page 31: Power Supplies

    Calibrator Theory of Operation Power Supplies AC line voltage is applied through a line filter to a power module in the rear panel. The module switches to accomodate four line voltages. The outputs of the power module are attached directly to the primaries of the mains transformer. The safety ground wire is attached from the power module to the rear panel.

  • Page 32: Accessories And Options

    Additional MET/CAL License (for MET/TEAM or Express) MET/CAL-TL Additional MET/TEAM License MET/TEAM-L Additional MET/TEAM Express License MET/TEAMXP-L Options can be ordered factory installed with a new Product or added later at a Fluke Calibration service center for an additional installation and calibration charge.

  • Page 33: Performance Tests

    Table 3. Test Equipment for Verification and Calibration Test Equipment Recommended Model Reference Multimeter Fluke 8508A Fluke 5790A, Fluke 5790B, or equivalent. Note The 5790A and 5790B have AC Measurement Standard identical connections. This manual shows the 5790A in all of the illustrations but also apply to the 5790B.
  • Page 34 5080A Service Manual Table 4. Verification Tests for DC Voltage (Normal) Range Output Lower Limit Upper Limit 329.999 mV 0.000 mV -0.0100 mV 0.0100 mV 329.999 mV 329.000 mV 328.9538 mV 329.0462 mV 329.999 mV -329.000 mV -329.0462 mV -328.9538 mV 3.29999 V...
  • Page 35 Calibrator Performance Tests Table 6. Verification Tests for DC Current Range Output Lower Limit Upper Limit 330 μA 0.00 μA -0.100 μA 0.100 μA 330 μA 329.00 μA 328.670 μA 329.330 μA 330 μA -329.00 μA -329.330 μA -328.670 μA 3.3 mA 0.00000 mA -0.000250 mA...
  • Page 36 5080A Service Manual Table 7. Verification Tests for 4-Wire Resistance Range Output Tolerance 0.0000 Ω 0.0000 Ω ±0.01000 Ω 1.0000 Ω 1.0000 Ω ±0.00989 Ω 1.9000 Ω 1.9000 Ω ±0.00931 Ω 10.000 Ω 10.000 Ω ±0.014 Ω 19.000 Ω 19.000 Ω...
  • Page 37 Calibrator Performance Tests Table 8. Verification Tests for AC Voltage (Normal) (cont.) Range Output Frequency Lower Limit Upper Limit 3.3 V 3.2900 V 1 kHz 3.28653 V 3.29347 V 33 V 32.900 V 45 Hz 32.8686V 32.9314V 33 V 32.900 V 100 Hz 32.8620 V 32.9380 V...
  • Page 38 5080A Service Manual Table 10. Verification Tests for AC Current (cont.) Range Output Frequency Lower Limit Upper Limit 3.3 mA 3.2900 mA 45 Hz 3.28219 mA 3.29781 mA 3.3 mA 3.2900 mA 100 Hz 3.28186 mA 3.29814 mA 3.3 mA 3.2900 mA...

  • Page 39: Megohm Option Verification Tests

    Calibrator Performance Tests Table 12. Verification Tests for Phase (Normal Voltage vs. Aux Voltage) Range, AUX Output Lower Upper Range Output Frequency Output Phase Limit Limit Voltage 3.3 V 329 mV 65 Hz 3.29999 V 329 mV 0 ° -0.25 ° 0.25 °...

  • Page 40: Low Resistance Source (Lvr) Verification

    1. Connect the low resistance source output to a standard multimeter as shown in Figure 7. Use a 4-wire connection and setup the multimeter for a 4-wire ohms measurement. Fluke 5080A Fluke 8508A gru001.eps Figure 7. Low Resistance Verifications Connections 2.

  • Page 41: High Resistance Source (Hvr) Verification

    To verify the High Resistance Source function: 1. Connect the high resistance source output to the input terminals of a standard multimeter in 2-wire configuration as shown in Figure 8. Fluke 5080A Fluke 8508A gru002.eps Figure 8. High Resistance Source Calibration Connections 2.
  • Page 42 HI terminal on the megohmmeter to the LO terminal on the Product and connect the LO terminal on the megohmmeter to the HI terminal on the Product. Turn the ground on and make the measurement. Fluke 5080A Megohmmeter gru003.eps Figure 9. High Resistance Verification for 1 G Ω and higher...

  • Page 43: Scope Option Verification Tables

    ±0.55 GΩ Scope Option Verification Tables Before the 5080A/SC Option leaves the Fluke factory, it is verified to meet its specifications at the test points shown in Tables 18 through 28. The verification test points are provided here as a guide when re-verification is desired. Table 42 is a list of test equipment necessary for SC200 Scope option calibration.
  • Page 44 5080A Service Manual Table 18. Voltage Function Verification: AC Voltage into a 1 MΩ Load (cont.) Measured Value 1-Year Spec. Nominal Value (p-p) Frequency Deviation (mV) (p-p) (mV) 20.0 mV 10 kHz 0.15 50.0 mV 10 kHz 0.23 89.0 mV 10 Hz 0.32...
  • Page 45 Calibrator Performance Tests Table 19. Voltage Function Verification: AC Voltage into a 50 Ω Load (cont.) Measured Value 1-Year Spec. Nominal Value (p-p) Frequency Deviation (mV) (p-p) (mV) 10.0 mV 100 Hz 0.12 10.0 mV 1 kHz 0.12 10.0 mV 10 kHz 0.12 20.0 mV...
  • Page 46 5080A Service Manual Table 20. Voltage Function Verification: DC Voltage into a 50 Ω Load (cont.) Nominal Value (dc) Measured Value (dc) Deviation (mV) 1-Year Spec. (mV) -25.0 mV 0.16 55.0 mV 0.24 -55.0 mV 0.24 100.0 mV 0.35 -100.0 mV 0.35...
  • Page 47 Calibrator Performance Tests Table 21. Voltage Function Verification: DC Voltage into a 1 MΩ Load (cont.) Nominal Value (dc) Measured Value (dc) Deviation (mV) 1-Year Spec. (mV) -450.0 mV 1.22 500.0 mV 1.35 -500.0 mV 1.35 3.3 V 8.35 -3.3 V 8.35 4.0 V 10.10...
  • Page 48 5080A Service Manual Table 23. Wave Generator Function Verification: 1 MΩ Load (cont.) Nominal Measured Deviation Waveform Frequency 1-Year Spec. Value (p-p) Value (p-p) (mV) Sine 6.5 V 10 kHz 195.10 mV Sine 55.0 V 10 kHz 1.65 V Triangle 5.0 mV...
  • Page 49 Calibrator Performance Tests Table 25. Leveled Sine Wave Function Verification: Amplitude Nominal Value 1-Year Spec. Frequency Measured Value (p-p) Deviation (mV) (p-p) (mV) 5.0 mV 50 kHz 0.300 10.0 mV 50 kHz 0.400 20.0 mV 50 kHz 0.600 40.0 mV 50 kHz 1.000 50.0 mV...
  • Page 50 5080A Service Manual Table 26. Leveled Sine Wave Function Verification: Flatness (cont.) Nominal Value 1-Year Spec. Frequency Measured Value (p-p) Deviation (mV) (p-p) (mV) 10.0 mV 10 MHz 0.25 10.0 mV 20 MHz 0.25 10.0 mV 50 MHz 0.25 10.0 mV 100 MHz 0.25...
  • Page 51 Calibrator Performance Tests Table 26. Leveled Sine Wave Function Verification: Flatness (cont.) Nominal Value 1-Year Spec. Frequency Measured Value (p-p) Deviation (mV) (p-p) (mV) 400.0 mV 1 MHz 6.10 400.0 mV 1 MHz 6.10 400.0 mV 2 MHz 6.10 400.0 mV 5 MHz 6.10 400.0 mV...
  • Page 52 5080A Service Manual Table 26. Leveled Sine Wave Function Verification: Flatness (cont.) Nominal Value 1-Year Spec. Frequency Measured Value (p-p) Deviation (mV) (p-p) (mV) 5.5 V 125 MHz 110.00 5.5 V 160 MHz 110.00 5.5 V 200 MHz 110.00 Table 27. Leveled Sine Wave Function Verification: Frequency Nominal Value 1-Year Spec.

  • Page 53: Mainframe Calibration

    Calibrator Mainframe Calibration Table 28. Marker Generator Function Verification (cont.) Nominal Interval Measured Interval Deviation 1-Year Spec. 500.000 ns 0.013 ns 200.000 ns 5.000 ps 100.000 ns 2.500 ps 50.000 ns 1.250 ps 20.000 ns 0.500 ps 10.000 ns 0.250 ps 5.000 ns 0.125 ps 2.000 ns...

  • Page 54: Required Calibration Test Equipment

    It must be set to ENABLE to store the correction factors into nonvolatile memory. After you push the 5080A CAL softkey, the procedure works as follows: 1. The Product automatically programs the outputs and prompts you to make external connections to applicable measurement instruments.

  • Page 55: Dc Volts Calibration (Normal Output)

    5. Measure and enter the values from the UUT in Table 31 as prompted by the Product. Disconnect and reconnect the DMM as prompted during these steps. DC Voltage adjust completed. Table 31. Calibration Steps for DC Volts Step 5080A Output (NORMAL) 1.000000 V 3.000000 V -1.000000 V -3.000000 V 0.0000 mV 300.0000 mV...

  • Page 56: Ac Volts Calibration (Normal Output)

    5790A, 5790B AC Measurement Standard To calibrate the ac voltage function: 1. Measure the Product output through Input 1 of a Fluke 5790A or 5790B AC Measurement Standard. Use a Type N to dual banana adapter as shown in Figure 11..
  • Page 57 Calibrator Mainframe Calibration 5790A or 5790B 5790A AC MEASUREMENT STANDARD Set the 5790A or 5790B to external guard INPUT 1 INPUT 2 1000V RMS MAX 1000V RMS MAX SHELL FLOATING SHUNT 3V RMS MAX WIDEBAND 7V RMS MAX 10V PEAK SHELL FLOATING GROUND GUARD...

  • Page 58: Dc Current Calibration

    9. Exit calibration and save the calibration constants changed so far through the front panel menus or the CAL_STORE remote command. Table 35. Calibration Steps for DC Current Step 5080A Output (AUX, HI, LO) Shunt to Use 300.000 μA Fluke 742A-1k 1 kΩ Resistance Standard Fluke 742A-100 100 Ω...
  • Page 59 Calibrator Mainframe Calibration Table 35. Calibration Steps for DC Current (cont.) Step 5080A Output (AUX HI, LO) Shunt to Use 20A, LO Guildline 9230 0.01 Ω shunt 10.0000 A Current shunt Fluke 8508A Set to Guard to Aux Lo Terminal...

  • Page 60: Ac Current Calibration

    Set 5790A or 5790B to external guard gru007.eps Figure 13. Connections for Calibrating AC Current with a Fluke A40 Shunt 2. For each amplitude shown in Table 36, apply the equivalent +(positive) and - (negative) dc current from the Product.
  • Page 61 The equipment shown in Table 36 is necessary to do the calibration steps in Table 37 for the ac current function. Table 36. Test Equipment Required for AC Current Calibration Quantity Manufacturer Model Equipment Type N to dual banana Fluke PN 900394 adapter Fluke 5790A or 5790B AC Measurement Standard Fluke A40-10 mA...
  • Page 62 Table 37. Calibration Steps for AC Current Output (AUX HI, LO) Steps Amplitude Frequency Shunt to Use 3.2999 mA 55.00 Hz Fluke A40 10 mA 0.3300 mA 55.00 Hz Fluke A40 10 mA 3.0000 mA 55.00Hz Fluke A40 10 mA 3.00000 mA 1.000 kHz...
  • Page 63 Calibrator Mainframe Calibration Fluke Calibration Corporation - Worldwide Support Center MET/CAL Procedure ============================================================================= INSTRUMENT: Sub Fluke 5080A ACI ADJ DATE: 03-Oct-2011 AUTHOR: REVISION: ADJUSTMENT THRESHOLD: NUMBER OF TESTS: NUMBER OF LINES: CONFIGURATION: Fluke 5790A ============================================================================= STEP RANGE NOMINAL TOLERANCE MOD1...

  • Page 64: Dc Volts Calibration (Aux Output)

    5080A Service Manual # Apply nominal -DC Current to A40 1.034 IEEE OUT -.33mA, 0HZ; OPER; *OPC?[I][GTL] 1.035 IEEE [D5000][GTL] 1.036 ACMS 1.037 5790 1.038 MATH M[18] = (ABS(MEM) + M[18]) / 2 1.039 IEEE OUT 3mA, 0HZ; OPER; *OPC?[I][GTL] 1.040...

  • Page 65: Ac Volts Calibration (Aux Output)

    Fluke 8508A To calibrate the resistance function: 1. Use the Fluke 8508A DMM for each measurement. 2. Make sure the UUT is in Standby. 3. Follow the prompt on the Control Display to connect the DMM to the UUT for 4-wire ohms measurement as shown in Figure 15.
  • Page 66 5080A Service Manual Table 41. Calibration Steps for Resistance Step Output (4-Wire Ohms, NORMAL and AUX) 1.0000 Ω 1.9000 Ω 10.000 Ω 19.000 Ω 100.000 Ω 190.000 Ω 1.00000 kΩ 1.90000 kΩ 10.0000 kΩ 19.0000 kΩ 100.000 kΩ 190.000 kΩ...

  • Page 67: Sc200 Calibration

    Figure 16. Connections for Calibrating 2-Wire Resistance SC200 Calibration The SC200 is an oscilloscope calibration option for the 5080A. The sections that follow explain how to calibrate the SC200 Oscilloscope Option. Note Although this procedure will calibrate the SC200 option in the field, it is recommended the Product be sent to Fluke Calibration for calibration and verification.
  • Page 68 Pomona #3288 BNC(f) to Type N(m) BNC Cable (supplied with SC200) Leveled Sine Wave Flatness (Low Frequency) Calibration and Verification AC Measurement Fluke 5790A with 03 Range 5 mV p-p to 5.5 V p-p Standard option Frequency 50 kHz to 10 MHz...
  • Page 69 BNC(f) to Type N(m) BNC Cable (supplied with SC200) Wave Generator Verification Range 1.8 mV p-p to 55 V p-p AC Measurement Fluke 5790A or 5790B Standard with 03 option Frequency 10 Hz to 100 kHz Adapter Pomona #1269 BNC(f) to Double Banana Plug Feedthrough 50 Ω, +1 %...

  • Page 70: Calibration Steps

    5080A Service Manual Calibration Steps Note The Product mainframe must be calibrated before you start to calibrate the SC200 option. Adjustments can be necessary after repair of the SC200. Hardware adjustments must be done before calibration. You must calibrate the option after hardware adjustments.
  • Page 71 Calibrator SC200 Calibration Table 43. AC Square Wave Voltage and Edge Settings for HP3458A HP 3458A Settings Voltage Input Frequency NPLC Delay (topline) DELAY (baseline) 10 Hz 0.02 s 0.07 s 100 Hz 0.002 s 0.007 s 1 kHz 0.01 0.0002 s 0.0007 s 5 kHz...
  • Page 72 5080A Service Manual Note The Product shows a warning message if the typed in measurement is out of limit. Look at the measurement again and re-enter the value carefully, with the correct multiplier (m, k, n, p, etc.). If the warning continues to show in the display, Product repair can be necessary.
  • Page 73 Calibrator SC200 Calibration Edge Amplitude Calibration To do an Edge Amplitude calibration: 1. Push the OPTIONS and NEXT SECTION softkeys until the display shows Set up to measure fast edge amplitude. 2. Use the BNC cable and BNC to double-banana adapter to connect the scope out connector of the Product to the HP 3458A as shown in Figure 18.
  • Page 74 5080A Service Manual Leveled Sine Wave Amplitude Calibration To do a leveled sine wave amplitude calibration: 1. Push the OPTIONS and NEXT SECTION softkeys until the display shows Set up to measure leveled sine amplitude. 2. Use the BNC cable, double-banana adapter, and the 50 Ω feed-through termination to connect the scope out connector of the Product to the 5790A or 5790B as shown in Figure 18.

  • Page 75: Sc200 Hardware Adjustments

    Calibrator SC200 Calibration Leveled Sine Wave Flatness Calibration Leveled sine wave flatness calibration is divided into two frequency bands. 50 kHz to 10 MHz (low frequency) and >10 MHz to 200 MHz (high frequency). Test equipment setup is different for each frequency band. Flatness of the low frequency band is made relative to 50 kHz.
  • Page 76 Product. Table 44. Test Equipment for Hardware Adjustments Test Equipment Recommended Model Extender card Fluke PN 661865 (5800A-7006K Extender kit) Tektronix 11801 with SD-22/26 or Tektronix Oscilloscope and Sampling head TDS 820 with 8 GHz bandwidth 10 dB Attenuator...
  • Page 77 Calibrator SC200 Calibration -34 dBc -39 dBc 3rd harmonic 2nd harmonic yg127f.eps Figure 19. Leveled Sine Wave Harmonics Adjustment 8. If the second and third harmonics are not at the correct dB level, adjust R8 until they are. You can find that you can have the second harmonic at - 34 dBc but the third harmonic is less than -39 dBc.
  • Page 78 5080A Service Manual How to Adjust the Aberrations for the Edge Function You must adjust the edge aberrations after you repair the edge function. 1. Set the Product into edge mode. 2. Set the Product output to 1 V p-p at 1 MHz.

  • Page 79: Megohm Option Calibration

    Note Although this procedure will calibrate the SC200 option in the field, it is recommended the Product be sent to Fluke Calibration for calibration and verification. It is recommended that you review all of the procedures in this section to make sure you have the resources to complete the calibration before you start.
  • Page 80 Figure 21. MEGOHM Low Resistance Calibration Connections 2. Select the 4-wire TRUE ohms function on the multimeter. 3. Set the cal enable switch on the rear of the 5080A to the enable position. 4. Push , then Cal, Cal, Option Cal, and Megohm Cal.
  • Page 81 Calibrator MEGOHM Option Calibration Table 47. MEGOHM Calibration Adjustment Points Step MEGOHM Output 1.0000 Ω 1.8000 Ω 3.7000 Ω 5.9000 Ω 10.000 Ω 18.000 Ω 37.000 Ω 59.000 Ω 100.00 Ω 180.00 Ω 370.00 Ω 590.00 Ω 1.0000 kΩ 1.8000 kΩ 3.7000 kΩ...
  • Page 82 5080A Service Manual Table 47. MEGOHM Calibration Adjustment Points (cont.) Step MEGOHM Output 1.620 kΩ 6.810 kΩ 11.00 kΩ 20.00 kΩ 40.00 kΩ 77.00 kΩ 143.0 kΩ 274.5 kΩ 510.0 kΩ 980.0 kΩ 1.825 MΩ 3.490 MΩ 6.650 MΩ 9.760 MΩ...
  • Page 83 7. Connect the Product to the Quadtech 1865 Megohmeter as shown in Figure 22. Make sure that you REVERSE POLARITY on this setup. Megohmmeter Fluke 5080A gru111.eps Figure 22. MEGOHM High Resistance Calibration Connections 8. Set the parameters of the QuadTech 1865 to the values shown in Table 48 and then do the adjustment steps in Table 49.

  • Page 84: Calibrate Through The Remote Interface

    These calibration commands can be sent through the IEEE-488 or serial interface. To type in commands through the serial interface: 1. Use a Fluke PM8914 cable to connect the applicable COM port on a PC to the 5080A Serial 1 connector.

  • Page 85: Remote Commands

    Calibrator Calibrate Through the Remote Interface Remote Commands The IEEE-488/RS-232 remote calibration commands for the Product are shown in this section alphabetically. This list ignores the * character that is used as the first character in the common commands. The remote commands duplicate works that can be done from the front panel in local operation.
  • Page 86 5080A Service Manual CAL_DAYS? Description Gets the number of days and hours since the last calibration constant. The data output for date is in the same format as the CLOCK command. Parameters MAIN Returns the days since the main unit calibration.
  • Page 87 Description Skip to next section of the calibration procedure. Example CAL_SECT CAL_START Description Start a calibration procedure. Parameters MAIN Procedure for the 5080A minus the scope cal option. ZERO Internal procedure to touch up zero offsets. OHMSZERO Internal procedure to touch up resistance offsets. SCOPE Procedure for the 5080A-SC200 scope cal option.
  • Page 88 5080A Service Manual CAL_STORE? Description Gets if a CAL_STORE is necessary. Response 1 Yes. Example CAL_STORE? CAL_SW? Description Gets the position of the calibration switch. Response 1 Enabled. Normal Example CAL_SW? EOFSTR Description Sets the End-Of-File character string used for calibration reports.
  • Page 89 Calibrator Calibrate Through the Remote Interface RPT_PLEN? Description Gets the page length used for calibration reports. Parameters None. Response (Integer) Page length. 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.

  • Page 90: Generating A Calibration Report

    5080A Service Manual Generating a Calibration Report Three different calibration reports are available from the Product: stored, active, or consts. Each report can be formatted for printing or comma-separated for importation into a different application. Push the REPORT SETUP softkey under CAL menu to set lines per page, calibration interval, type of report, format, and the serial port to output through.
  • Page 91 Calibrator General Maintenance Table 51. Replacement Fuses Line Voltage Setting Fuse Description Part Number 100 V or 120 V 5.0A, 250V, Slow Blow, 0.25 x 1.25 W 109215 220 V or 240 V 2.5A, 250V, Slow Blow, 0.25 x 1.25 W 851931 Line Voltage Indicator...

  • Page 92: Replace The Current Fuses

    5080A Service Manual Replace the Current Fuses The two Product current outputs have fuse protection. If the Product cannot source current, one or both of the current fuses can be blown. XW Warning To prevent possible electrical shock, fire, or personal injury, turn the Product off and remove the mains power cord.
  • Page 93 Calibrator General Maintenance gew368.eps Figure 24. Current Fuse Compartment...

  • Page 94: Clean The Air Filter

    5080A Service Manual Clean the Air Filter W Warning To prevent risk of injury, do not operate or power the Product without the fan filter in place. W Caution Damage can occur when the Product becomes too hot if the area around the fan is restricted, the intake air is too warm, or the filter becomes clogged.
  • Page 95 Calibrator General Maintenance oq062f.eps Figure 25. Accessing the Air Filter...
  • Page 96 5080A Service Manual h Static Awareness h Semiconductors and integrated circuits can be damaged by electrostatic discharge during handling. This notice explains how to minimize damage to these components. 1. Understand the problem. 2. Learn the guidelines for proper handling.

  • Page 97: Access Procedure

    Access Procedure Access Procedure The access procedures supplied here are for those who must replace a defective module only. Fluke Calibration does not recommend that the user repair the boards to the component level. WCaution To avoid damage to the Product, do not touch the circuit boards.
  • Page 98 5080A Service Manual (8x) gru205.eps Figure 26. Remove Analog Modules...

  • Page 99: Rear-Panel Assemblies

    Calibrator Access Procedure Rear-Panel Assemblies To remove the Main CPU PCA (A9), the transformer, and the ac line input filter, see Figure 27: 1. Remove the top cover. See steps 1-2 in the Analog Modules section. 2. Remove the six 3 mm Allen screws from the rear handles. 3.
  • Page 100 5080A Service Manual gru201f.eps Figure 27. Remove Rear Panel Assemblies...

  • Page 101: Main Cpu (A9)

    Calibrator Access Procedure Main CPU (A9) To remove the Main CPU PCA, see Figure 28: 1. Remove the rear-panel assembly. See the Rear-Panel Assemblies section. 2. Remove the 3/16 inch jack screws and washers from the RS-232 connector. 3. Remove four Phillips screws from the right side of the rear panel. 4.
  • Page 102 5080A Service Manual gru202.eps Figure 28. Remove the Main CPU PCA (A9)

  • Page 103: Filter Pca (A12)

    Calibrator Access Procedure Filter PCA (A12) To remove the Filter PCA (A12): 1. Remove the top cover, guard-box cover, and all the analog modules. See the Analog Modules section and Figure 29. 2. Remove the two Phillips screws from the front side of the rear guard box wall. 3.
  • Page 104 5080A Service Manual gru206.eps Figure 29. Remove Filter PCA (A12)

  • Page 105: Encoder/Display Pca (A2)

    Calibrator Access Procedure Encoder/Display PCA (A2) To remove the Encoder/Display PCA (A2) PCA and Keypad, see Figure 30: 1. Remove top and bottom covers. See steps 1-4 in the Rear Panel Assemblies section. 2. With the bottom side up, disconnect all of the cables that go to the front panel.
  • Page 106 5080A Service Manual gru203.eps Figure 30. Remove Encoder/Display PCA (A2)

  • Page 107: Output Block Pca (A16)

    Calibrator Access Procedure Output Block PCA (A16) To remove the Output Block PCA (A16), see Figure 31: 1. Remove the three Phillips screws on the Output Block PCA (A16). 2. Remove the output cables, nuts, and washers from the terminal posts on the output block.

  • Page 108: Replaceable Parts

    Special notes (for example, factory-selected part) How to Obtain Parts Part prices are available from the Fluke Calibration or its representatives. See the How To Contact Fluke Calibration section to get parts. If a part is replaced by a new or better part, the replacement will be accompanied by an explanatory note and if necessary, installation instructions.

  • Page 109: Parts

    Table 53 shows the replaceable parts for the Product. Figure 32 shows the parts within the Product. Table 53. Replaceable Parts Reference Part Description Designator Number 5080A-7603, MOTHER BOARD, A3 - TESTED 4018029 5080A-7605, OHMS, A5 - TESTED 4018034 5080A-7606, INGUARD/CPU, DDS, A6 - TESTED 4018041 5080A-7607, CURRENT, A7 - TESTED 4018052...
  • Page 110 (PAINTED) 5080A-2010,FRONT TRIM FIXING STRIP 3435237 5080A-8006,HANDLE, 4U 3468705 5080A-8001,KEYPAD RUBBER 5080A 3391346 5080A-4002,PCA, KEYPAD / ENCODER A1 / A2 3439674 CONTRACT MFG ITEM, JACK BAN SAFE BLK 2079863 CONTRACT MFG ITEM, JACK BAN SAFE RED 2079874 MP10 5080A-2019,HIGH VOLTAGE TERMINAL BLOCK...
  • Page 111 INSULATOR,NYLON,MOLDED,5/16 (M8),0.093 IN. MP24 3533983 LONG,BULK CABLE TIE,50LB,14.2 IN. LIGHT GREEN HIGH-TEMP MP25 3534000 NYLON WITH S-S LOCKING DEVICE,BULK MP26 5080A-8007,MAINS SWITCH PUSH ROD 5080A 3525824 MP27 5700A-2046 ,POWER BUTTON, ON/OFF 775338 MP28 5500A-8011 ,AIR FILTER 945287 MP29 5500A-2012 ,HOUSING, AIR FILTER...
  • Page 112 Number MP44 GUIDE,GETTING STARTED GUIDE, 5080A 3502941 SHIPPING BOX,REGULAR SLOTTED MP45 3753014 CARTON,KRAFT,48LB B-C FLUTE,28.375,25.00,13.25 MP46 DVD,GNU LESSER GENERAL PUBLIC LICENSE - 5080A 3779181 MP47 LABEL,SERVICE ONLY LABEL- 5080A 3779509 MP48 5080A-2020,SHIELD, A9 3669601 MP49 5440A-8198-01 ,BINDING POST, STUD, PLATED...
  • Page 113 Calibrator Replaceable Parts gru105.eps Figure 32. Final Assembly...
  • Page 114 5080A Service Manual gru106.eps Figure 32. Final Assembly (cont.)
  • Page 115 Calibrator Replaceable Parts gru107.eps Figure 32. Final Assembly (cont.)
  • Page 116 5080A Service Manual MP34 H121-H131 (x8) MP38 MP35 (x4) H132-H168 (x4) MP42 H132-H168 MP41 (x2) (x2) J1-J6 gru108.eps Figure 32. Final Assembly (cont.)

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