Fluke ScopeMeter 190 III Series Service Manual
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Fluke ScopeMeter 190 III Series Service Manual

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190 Series III
®
ScopeMeter
Test Tool
Models 190-xxx-III/190M-x-III/MDA-550-III
Service Manual
É
3/2022 (English)
©2022 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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  • Page 1 190 Series III ® ScopeMeter Test Tool Models 190-xxx-III/190M-x-III/MDA-550-III Service Manual É 3/2022 (English) ©2022 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: Table Of Contents

    Table of Contents Title Page Introduction........................... Contact Fluke ..........................Safety Information........................Static Awareness ........................Specifications ..........................Performance Verification......................Equipment Requirements for Verification ..............General Operation Instructions ..................Reset the Test Tool ....................Menu Navigation ......................Standard Test Tool Setup ..................
  • Page 4 190 Series III Service Manual Calibration Adjustment ......................34 Calibration Number and Date ..................34 General Instructions ......................34 Equipment Required For Calibration................35 Calibration Procedure Steps..................35 How to Start the Calibration ................... 36 Display Messages and Key Functions................ 37 Warming-Up and Pre-Calibration .................

  • Page 5: Introduction

    190 Series III versions. Contact Fluke Fluke Corporation operates worldwide. For local contact information, go to our website: www.fluke.com. To register your product, or to view, print, or download the latest manual or manual supplement, go to our website.

  • Page 6: Static Awareness

    190 Series III Service Manual Static Awareness 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. 3.

  • Page 7: Specifications

    ScopeMeter® Test Tool Specifications Specifications Complete specifications are at www.fluke.com. See the 190 Series III Product Specifications. Performance Verification XW Warning To prevent possible electrical shock, fire, or personal injury, do not service the Test Tool unless you are qualified to do so. Service described in this manual is to be done only by qualified service personnel.

  • Page 8: Equipment Requirements For Verification

    190 Series III Service Manual Equipment Requirements for Verification The primary source instrument used in the verification procedures is the Fluke 5502A. If a 5502A is not available, you can substitute another calibrator as long as it meets the minimum test requirements.

  • Page 9: Menu Navigation

    ScopeMeter® Test Tool Performance Verification Menu Navigation During verification you must open menus and choose items from the menu. To make choices in a menu: 1. Reset the Test Tool. 2. Open a menu, for example, press and press (READING …). The menu shown in Figure 1 opens.
  • Page 10 190 Series III Service Manual To create a setup (for example, SCOPE 1): 1. Reset the Test Tool. Input A is ON and other inputs are OFF. 2. Press : INPUT B ON. The black text with yellow background indicates the actual settings. 3.

  • Page 11: Scope Input A, B, C, D Tests

    D are checked in succession and one waveform is on the display at a time to facilitate amplitude adjustment. Figure 2. Test Tool Inputs to 5502A Normal Output CONNECT TO CHANNEL A, B, C, D IN SUCCESSION PM9091 PM9091 TERMINATION METER 2 CHAN. + METER 4 CHANNELS NORMAL SCOPE PM9081 FLUKE 5502A CALIBRATOR...
  • Page 12 190 Series III Service Manual 2. Select the Test Tool setup: a. Recall the created setup (see Standard Test Tool Setup). b. Press (RECALL) and select SETUP. c. Press , select the setup name, and press to recall the setup. d.
  • Page 13 203.67 to 220.58 The vertical accuracy test can be done with dc voltage. This method is advised for automatic verification that uses the Fluke Met/Cal Metrology Software. For each sensitivity range: 1. Apply a +3 division voltage, and adjust the voltage until the trace is at +3 divisions. Write down the applied voltage V1.

  • Page 14: Input A, B, C, D Dc Voltage Accuracy Test

    CONNECT TO CHANNEL A, B, C, D IN PARALLEL TERMINATION METER 2 CHAN. + METER 4 CHANNELS NORMAL SCOPE PM9081 FLUKE 5502A CALIBRATOR 2. Select the Test Tool setup: a. Recall the setup (see Standard Test Tool Setup). Press (RECALL) and select SETUP. b. Press , select the setup name, and press to recall the setup.
  • Page 15 ScopeMeter® Test Tool Performance Verification 3. Press and use to set the Input A sensitivity range to the first test point in Table 3. Do this also for channel B, C, and D. 4. Set the 5502A to source the appropriate dc voltage. Observe readings A, B, C, and D and check they are within the range shown under the appropriate column.

  • Page 16: Input A, B, C, D Ac Voltage Accuracy Test (Lf)

    190 Series III Service Manual Table 3. Volts DC Measurement Verification Points (cont.) Range 5502A Output V DC Reading +60.0 V +58.5 to +61.5 20 V/div -60.0 V -61.5 to -58.5 +150 V +142 to +158 50 V/div -150 V -158 to -142 +300 V +289 to +311...
  • Page 17 ScopeMeter® Test Tool Performance Verification h. Press , then press (INPUT D OPTIONS …). Select Attenuator: Normal | Bandwidth: 10 kHz for the available setting in the ScopeMeter (2 mV/d and 5 mV/d) or | Bandwidth: 20 MHz (other ranges). Press to clear the softkey menu and see the full 8-divisions display.
  • Page 18 190 Series III Service Manual Table 4. Volts AC Measurement Verification Points 5502A Output V DC Range Reading V ac Frequency 2 mV/div 4 mV 60 Hz 2.9 mV to 5.1 mV (Select 10 ms/div) Note Set input channel Bandwidth 10 kHz to prevent OL due to calibrator noise, see step 2. 5 mV/div 10 mV 60 Hz...

  • Page 19: Input A, B, C, D Ac-Coupled Lower Frequency Test

    ScopeMeter® Test Tool Performance Verification Input A, B, C, D AC-Coupled Lower Frequency Test Note The test steps for channel C and D are only for the 4-channel models. To test the ac-coupled input low-frequency accuracy: 1. Connect the Test Tool to the 5502A as for the previous test. See Figure 2.

  • Page 20: Input A, B, C, D Peak Measurements Test

    190 Series III Service Manual Input A, B, C, D Peak Measurements Test XW Warning To prevent possible electrical shock, fire, or personal injury, make sure that the calibrator is in standby mode before making any connection between the calibrator and the Test Tool. Dangerous voltages are present on the calibration source and connection cables during these steps.

  • Page 21: Input A, B, C, D Frequency Measurement Accuracy Test

    PM9093 50 : TERMINATION METER 2 CHAN. + METER 4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Select the following Test Tool setup: a. Recall the setup (see Standard Test Tool Setup). Press (RECALL) and select SETUP, press , select the setup name, and press to recall the setup.

  • Page 22: Input A&B / C&D Phase Measurements Test

    190 Series III Service Manual 7. Continue through the test points. When you are finished, set the 5502A to 0 (zero) Volt and Standby. Table 7. Input A, B, C, D Frequency Measurement Accuracy Test Model Time base 5502A-SC... MODE Voltage Frequency Input Reading...

  • Page 23: Time Base Test

    To test the time base accuracy: 1. Connect the Test Tool to the 5502A as shown in Figure For the Fluke 190-502, 190-504, and MDA-550-III you must use the Fluke TRM50 50 Ω terminator. Figure 5. 5502A Scope Output to Test Tool Input A...

  • Page 24: Input A, B, C, D Trigger Sensitivity Test

    190 Series III Service Manual 2. Set the 5502A to source an 8 ms time marker (MODE marker). 3. Select the Test Tool setup: a. Reset the Test Tool. b. Use to select manual vertical ranging, and set the Input A sensitivity range to 5 V/div (10:1 probe) or 500 mV/div (probe A factor is 1:1).
  • Page 25 ScopeMeter® Test Tool Performance Verification 4. Use to select the time base in Table 5. Set the 5502A to source the leveled sine wave for the appropriate Test Tool model. 6. Adjust the 5502A output voltage until the displayed trace has the trigger amplitude indicated under the last column of Table 7.
  • Page 26 TERMINATION METER 2 CHAN. + METER 4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Reset the Test Tool to select the Test Tool setup. 3. Press to turn Input B on. 4. Press and use to select Input B as trigger source.
  • Page 27 TRM50! USE 50 TERMINATION 4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Reset the Test Tool to select the Test Tool setup. 3. Press to turn Input C on. 4. Press and use to move the Input C trace zero to the center grid line.

  • Page 28: Input A Ac Voltage Accuracy (Hf) And Bandwidth Test

    TRM50! TERMINATION 4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Reset the Test Tool to select the Test Tool setup. 3. Press to turn Input D on. 4. Use to move the Input D trace zero to the center grid line.

  • Page 29: Input B Ac Voltage Accuracy (Hf) And Bandwidth Test

    ScopeMeter® Test Tool Performance Verification b. Press c. Press (– READING …) and select with (– READINGS) and (READINGS) on A | V ac. d. Press to select autoranging (AUTO in upper right LCD edge). e. Use to change the sensitivity range to select manual sensitivity ranging, and lock the Input A sensitivity range on 500 mV/div.

  • Page 30: Input C Ac Voltage Accuracy (Hf) And Bandwidth Test

    190 Series III Service Manual c. Press (– READING …) and select with (READINGS 2), and select on B | V ac. d. Press to select autoranging (AUTO in upper right LCD edge). e. Use to change the sensitivity range to select manual sensitivity ranging and lock the Input B sensitivity range on 500 mV/div.

  • Page 31: Input D Ac Voltage Accuracy (Hf) And Bandwidth Test

    ScopeMeter® Test Tool Performance Verification Input D AC Voltage Accuracy (HF) and Bandwidth Test Note The test steps for channel C are only for the 4-channel models. To test the Input D high frequency automatic scope ac voltage measurement accuracy and the bandwidth: 1.

  • Page 32: External Trigger Level Test

    AS SUPPLIED WITH CALIBRATOR METER 2 CHAN. + METER NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Reset the Test Tool to select the Test Tool setup. 3. Press 4. Use to select the TRIGGER OPTIONS... menu. 5. Select On Edges... from the TRIGGER OPTIONS menu.

  • Page 33: Meter Tests

    ScopeMeter® Test Tool Performance Verification Meter Tests Note The following tests are for the models 190-062, 190-102, 190-202, 190M-2, and 190-502. Meter DC Voltage Accuracy Test XW Warning To prevent possible electrical shock, fire, or personal injury, make sure that the calibrator is in standby mode before making any connection between the calibrator and the Test Tool.

  • Page 34: Meter Ac Voltage Accuracy And Frequency Response Test

    190 Series III Service Manual Meter AC Voltage Accuracy and Frequency Response Test XW Warning To prevent possible electrical shock, fire, or personal injury, ensure that the calibrator is in standby mode before making any connection between the calibrator and the Test Tool. Dangerous voltages are present on the calibration source and connection cables during these steps.

  • Page 35: Continuity Function Test

    ScopeMeter® Test Tool Performance Verification Continuity Function Test To test the continuity function: 1. Press 2. Press to open the Measurement menu and select Continuity. 3. Connect the Test Tool to the 5502A. See Figure 4. Set the 5502A to 20 Ω. Use the 5502A “COMP OFF” mode. 5.
  • Page 36 USE STACKABLE TEST LEADS AS SUPPLIED WITH CALIBRATOR METER 2 CHANN. + METER NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Select the Test Tool setup. 3. Press 4. Press to open the Measurement menu and select Ohms. 5. Press to select AUTO ranging.

  • Page 37: Probe Calibration Generator Test

    ScopeMeter® Test Tool Performance Verification Probe Calibration Generator Test To calibrate, connect a 10:1 or 100:1 probe as supplied with the Test Tool to input A (red probe). Connect the probe tip and the probe ground lead with the probe cal terminals on the lower left side of the Test Tool.

  • Page 38: Calibration Adjustment

    190 Series III Service Manual Calibration Adjustment This section provides the complete Calibration Adjustment procedure for the Test Tool. The Test Tool allows closed-case calibration with known reference sources. It measures the reference signals, calculates the correction factors, and stores the correction factors in RAM. When the calibration is complete, the correction factors can be stored in FlashROM.

  • Page 39: Equipment Required For Calibration

     jacks and 2 BNC oscilloscope inputs). 50 Ω Coax Cables (4x): use Fluke PM9091 (1.5 m, 3/set) and PM9092 (0.5 m, 3/set). For Test  Tools with banana jacks and 2 BNC oscilloscope inputs 2 Coax Cables are sufficient.

  • Page 40: How To Start The Calibration

    190 Series III Service Manual How to Start the Calibration To start the calibration: 1. Power the Test Tool with the power adapter input and the BC190 power adapter. 2. Check the actual Test Tool date and adjust the date if necessary (the calibration date will become the Test Tool date when saving the calibration data): a.

  • Page 41: Display Messages And Key Functions

    ScopeMeter® Test Tool Calibration Adjustment Display Messages and Key Functions When the Test Tool is in the calibration mode, only the softkeys, the key, and the key are active, unless otherwise stated. The calibration adjustment menu shows the actual calibration step (name and number) and its status: Cal Name (CL nnnn) %:Status (…) Cal Name Name of the selected calibration step, for example, WarmingUp...

  • Page 42: Warming-Up And Pre-Calibration

    190 Series III Service Manual Warming-Up and Pre-Calibration The Warming-Up and Pre-Calibration state is the start of the calibration mode. The display shows WarmingUp (CL 0200):xx %. Note You must always start the calibration adjustment at the WarmingUp (CL 0200) step. The calibration will be invalid if you start at any other step.

  • Page 43: Error Messages

    ScopeMeter® Test Tool Calibration Adjustment Error Messages If error message 1000 is displayed during Warming-Up or Pre-Calibration step CL 0215, the Main PCA hardware version is not suitable for the installed software version. Other error messages during Warming-Up or Pre-Calibration indicate that the Test Tool is defective, and should be repaired.

  • Page 44: Warming-Up 2, Warm-Up Final, And Adc Timing

    Input A LF-HF Gain section. Figure 13. 5502A Scope Output to Test Tool Input A PM9091 TRM 50 - 50 For 190-502 and -504 USE 50 use only TRM50! TERMINATION METER 2 CHANN. + METER NORMAL SCOPE FLUKE 5502A CALIBRATOR...

  • Page 45: Input A Lf-Hf Gain

    USE 50 TERMINATION METER 2 CHAN. + METER 4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR 3. Set the 5502A SCOPE output to source the signal required for the first calibration point for Input B LF-HF Gain (CL 0674, Pos B Fast).

  • Page 46: Input C Lf-Hf Gain

    4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR 2. Set the 5502A SCOPE output to source the signal required for the first calibration point in Input C LF-HF Gain. 3. Set the 5502A to operate (OPR) or standby (STBY) as indicated.

  • Page 47: Input D Lf-Hf Gain

    ScopeMeter® Test Tool Calibration Adjustment Wait until the display shows calibration status CL 0549: READY. 5. Press to select the next calibration step, set the 5502A to the next calibration point signal, and start the calibration. Continue through all calibration points of Input C LF-HF Gain. 6.

  • Page 48: Input Ab Position (All Models)

    TRM50! TERMINATION 4 CHANNELS NORMAL SCOPE FLUKE 5502A CALIBRATOR Input AB Position (All Models) To do the Input AB Position calibration: 1. Press to select calibration adjustment step CL 0637 (Pos AB). 2. Set up the test shown in...

  • Page 49: Input Ab Lf-Hf Gain And Position

    ScopeMeter® Test Tool Calibration Adjustment Input AB LF-HF Gain and Position To do the Input AB LF-HF Gain calibration: 1. Press to select the first calibration step in Table 14, Input AB Gain and Position. XW Warning To prevent possible electrical shock, fire, or personal injury, make sure that the calibrator is in standby mode before making any connection between the calibrator and the Test Tool.

  • Page 50: Input Ab Volt Gain

    2 CHAN. + METER 4 CHANNELS NORMAL SCOPE PM9081 FLUKE 5502A CALIBRATOR 3. Set the 5502A to supply a 50 Hz voltage (NORMAL output), to the first calibration point in Input AB Volt Gain. 4. Press to start the calibration.

  • Page 51: Dmm Calibration

    14, Multimeter Volt Gain. 2. Connect the Test Tool to the 5502A. See Figure Figure 19. 5502A Normal Output to Test Tool Banana Input USE STACKABLE TEST LEADS AS SUPPLIED WITH CALIBRATOR METER 2 CHAN. + METER NORMAL SCOPE FLUKE 5502A CALIBRATOR...

  • Page 52: Multimeter Ohm Gain

    NORMAL SCOPE FLUKE 5502A CALIBRATOR 3. Set the 5502A to the first test point in Multimeter Ohm Gain. Use the 5502A “COMP 2 wire” mode for the calibration adjustments up to and including 100 kΩ. For the higher values, the...

  • Page 53: Save Calibration Data And Exit

    ScopeMeter® Test Tool Calibration Adjustment 4. Set the 5502A to operate (OPR). 5. Press to start the calibration. Wait until the display shows the calibration status :READY. 6. Press to select the next calibration step, set the 5502A to the next calibration point, and start the calibration.
  • Page 54 CL 0580 2.5 Vpp sine wave, 50 kHz SCOPE levsine, 2.5 Vpp, 50 kHz 2.5 Vpp sine wave SCOPE levsine, 2.5 Vpp, Fluke 190-502/504: 501 MHz 501 MHz CL 0581 Fluke 190-202/204/190M-2/4: 381 MHz 381 MHz Fluke 190-102/104: 151 MHz...
  • Page 55 Table 14. Calibration Points (cont.) Cal Step DUT Input Signal 5502A Setting 0.5 Vpp sine wave SCOPE levsine, 0.5 Vpp, Fluke 190-502/504: 501 MHz 501 MHz CL 0483 Fluke 190-202/204/190M-2/4: 381 MHz 381 MHz Fluke 190-102/104: 151 MHz 151 MHz...
  • Page 56 CL 0586 2.5 Vpp sine wave, 50 kHz SCOPE levsine, 2.5 Vpp, 50 kHz 2.5 Vpp sine wave SCOPE levsine, 2.5 Vpp, Fluke 190-502/504: 501 MHz 501 MHz CL 0587 Fluke 190-202/204/190M-2/4: 381 MHz 381 MHz Fluke 190-102/104: 151 MHz...
  • Page 57 ScopeMeter® Test Tool Calibration Adjustment Table 14. Calibration Points (cont.) Cal Step DUT Input Signal 5502A Setting Input ABCD Gain Calibration Points (see Figure CL 0799 5 mV, 50 Hz CL 0800 12.5 mV, 50 Hz CL 0801 25 mV, 50 Hz CL 0802 50 mV, 50 Hz CL 0803...

  • Page 58: Error Messages

    190 Series III Service Manual Error messages Proceed as follows if an error message ERROR: nnnn shows on the display during calibration: if nnnn <5000, check input signal and test leads and press to repeat the current  step. if nnnn ≥5000, check input signal and test leads and repeat the final calibration in the ...

  • Page 59: Disassembly And Reassembly Procedures

    The Test Tool contains a Li-ion battery pack. See Section 1 for instructions on how to safely handle and use this battery pack. The Users Manual is available at www.fluke.com. The Test Tool uses self-tapping screws. For longer life, use a hand-operated screwdriver to reinsert the screws into the same screw-hole threads on the case.

  • Page 60: Open The Test Tool, Remove The Battery Pack

    190 Series III Service Manual Open the Test Tool, Remove the Battery Pack To remove the battery: 1. Turn the plastic battery door screws one-quarter turn counterclockwise with a standard blade screwdriver. 2. Remove the battery access door. 3. Remove the battery from the instrument. Note Do not short circuit the battery contacts.

  • Page 61: How To Access The Top Side Of Pca

    ScopeMeter® Test Tool Disassembly and Reassembly Procedures How to Access the Top Side of PCA Most of the measurement points are located on the top side of the PCA. For access to this side, remove the upper plate (shielding lid): 1.

  • Page 62: Access To Lcd, Keypad Foil, And Keypad

    190 Series III Service Manual 4. Carefully slide the PCA out of the holes for the BNCs and Banana Jacks (2-ch Test Tools). The A, B, and Meter input circuits are covered with an isolation foil. 5. Take careful notice on how the foil is positioned around the PCA before you remove the foil as far as required to repair a defective channel.

  • Page 63: Disassembly Steps

    ScopeMeter® Test Tool Disassembly and Reassembly Procedures Disassembly Steps Figure Figure 23, and Figure 24 for guidance on disassembly. Note Figures may be subject to minor changes without prior notice. Figure 22. Opened Case and Screws (4x) (6x) (2x)
  • Page 64 190 Series III Service Manual Figure 23. Screening Plate Removed and Screws (4x) (4x) (4x)
  • Page 65 ScopeMeter® Test Tool Disassembly and Reassembly Procedures Figure 24. PCA Removed from Chassis, Bottom Side Visible (6x)

  • Page 66: Parts List

    How to Obtain Parts To locate an authorized service center, go to www.fluke.com. 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 67: Final Assembly Parts

    ScopeMeter® Test Tool Parts List Final Assembly Parts Table 15 Figure Figure 23, and Figure 24 for the Final Assembly parts. ~W Caution The Test Tool contains a Li-ion battery. Do not mix with the solid waste stream. Spent batteries should be disposed of by a qualified recycler or hazardous materials handler.
  • Page 68 190 Series III Service Manual Table 15. Final Assembly Parts and Kits (cont.) Order Figure/Item Part or Kit Includes Code Number Front case (excludes lens/decal) /  2-channel Case seal /  Bottom case assy (includes decal with /  warnings and markings) Case Set 2-channel 5325240...

  • Page 69: Accessory List

    4025762 not shown Pack (available as accessory) BP291 Li-ion Battery 52 Wh, 10.8 V 3894688 not shown Pack (available as accessory) Hang Strap 946769 attach to top of instrument not shown Accessory List The up-to-date accessory list is at www.fluke.com.
  • Page 70 190 Series III Service Manual...

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