Fluke ScopeMeter 190 III Series

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190 Series III

ScopeMeter® Te s t To o l

Models 190-xxx-III/190M-x-III/MDA-550-III

Service Manual

3/2022 (English)

Specifications are subject to change without notice.

All product names are trademarks of their respective companies.

Main Page

Table of Contents3
Introduction5
Contact Fluke5
Safety Information5
Static Awareness6
Specifications7
Performance Verification7
Equipment Requirements for Verification8
General Operation Instructions8
Reset the Test Tool8
Menu Navigation9
Standard Test Tool Setup9
Scope Input A, B, C, D Tests11
Input A, B, C, D Vertical Accuracy Test11
Input A, B, C, D DC Voltage Accuracy Test14
Input A, B, C, D AC Voltage Accuracy Test (LF)16
Input A, B, C, D AC-Coupled Lower Frequency Test19
Input A, B, C, D Peak Measurements Test20
Input A, B, C, D Frequency Measurement Accuracy Test21
Input A&B / C&D Phase Measurements Test22
Time Base Test23
Input A, B, C, D Trigger Sensitivity Test24
Input a AC Voltage Accuracy (HF) and Bandwidth Test28
Input B AC Voltage Accuracy (HF) and Bandwidth Test29
Input C AC Voltage Accuracy (HF) and Bandwidth Test30
Input D AC Voltage Accuracy (HF) and Bandwidth Test31
External Trigger Level Test32
Meter Tests33
Meter DC Voltage Accuracy Test33
Meter AC Voltage Accuracy and Frequency Response Test34
Continuity Function Test35
Diode Test Function Test35
Ohms Measurements Test35
Probe Calibration Generator Test37
Calibration Adjustment38
Calibration Number and Date38
General Instructions38
Equipment Required for Calibration39
Calibration Procedure Steps39
How to Start the Calibration40
Display Messages and Key Functions41
Warming-Up and Pre-Calibration42
Error Messages43
Final Calibration43
Warming-Up 2, Warm-Up Final, and ADC Timing44
Input a LF-HF Gain45
Input B LF-HF Gain45
Input C LF-HF Gain46
Input D LF-HF Gain47
Input AB Position (All Models)48
Input AB LF-HF Gain and Position49
Input Pos ABCD (AB) Calibration49
Input ABCD (AB) Noise F FBW Calibration49
Input AB Volt Gain50
DMM Calibration51
Multimeter Meter Zero51
Multimeter Volt Gain51
Multimeter Ohm Gain52
Save Calibration Data and Exit53
Error Messages58
Probe Calibration58
Disassembly and Reassembly Procedures59
Required Tools59
Remove the Tilt Stand, Hang Strap, and Side Strap59
Open the Test Tool, Remove the Battery Pack60
How to Access the Top Side of PCA61
How to Access the Bottom Side of PCA61
Access to LCD, Keypad Foil, and Keypad62
Disassembly Steps63
Parts List66
How to Obtain Parts66
Final Assembly Parts67
Accessory List69

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Fluke ScopeMeter 190 III Series Specifications

General

Brand	Fluke
Model	ScopeMeter 190 III Series
Category	Test Equipment
Language	English

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