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POTOMAC FIELD STRENGTH METER FIM-21 Instruction manual
(service manual)
English language, 40 pages
text 150dpi, schematics 300dpi, grayscale lossless LZW tiff scans, lossless ZIP PDF compression, 7 MBytes
Retouched and normalized, print ready.
Table of Contents:
SECTION 1. GENERAL DESCRIPTION
1.1 Scope of Manual 1-1
1.2 Purpose of Equipment 1-1
1.3 Equipment Specifications 1-1
SECTION 2. OPERATION
2.1 General 2-1
2.2 Operating Controls and Indicators 2-1
2.3 FIM Calibration 2-2
2.4 Measuring Field Strength 2-4
2.5 Measuring Harmonic Ratio in Decibels 2-5
2.6 R. F. Bridge Measurements.
(Tuned Voltmeter) 2-6
SECTION 3. THEORY OF OPERATION
3.1 General 3-1
3.2 Block Diagram Description 3-1
3.3 Circuit Description 3-3
SECTION 4. MAINTENANCE
4.1 General 4-1
4.2 Battery Replacement 4-1
4.3 Battery Types 4-1
4.4 Lamp Replacement 4-1
4.5 To Remove FIM from Case 4-2
4.6 To Operate the FIM With Case Removed 4-3
4.7 IC Replacement 4-3
4.8 Preventive Maintenance 4-3
4.9 Troubleshooting and Repair 4-5
4.10 Recalibration 4-8
SECTION 5. SCHEMATIC DIAGRAM
5.1 General 5-1
LIST OF ILUSTRATIONS
2-1 Figure Operating Controls and Indicators 2-3
3-1 Field Strength Meter, Functional Block Diagram 3-2
4-1 Troubleshooting Voltage Charts 4-4
4-2 Field Strength Meter, Component Locations 4-6
4-3 Field Strength Meter, Component Locations 4-7
5-1 Field Strength Meter, Schematic Diagram 5-1
LIST OF TABLES
1-1 Specifications: Type FIM-21 Field Strength Meter 1-1
1-2 Specifications: Type FIM-41 Field Strength Meter 1-3
2-1 Operating Controls and Indicators 2-1
File Data
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