Fluke 123 Service Manual

i
Table of Contents
Chapter Title Page
Limited Warranty & Limitation of Liability........................................................ii
Introduction and Safety Instructions................................................................1-1
1.1 Introduction to Service Manual .....................................................................1-3
1.2 Safety.............................................................................................................1-3
1.2.1 Introduction................................................................................................. 1-3
1.2.2 Safety Precautions....................................................................................... 1-3
1.2.3 Caution and Warning Statements................................................................1-3
1.2.4 Symbols used in this Manual and on Instrument........................................1-4
1.2.5 Impaired Safety...........................................................................................1-4
1.2.6 General Safety Information.........................................................................1-4
Characteristics ...................................................................................................2-1
2.1 Introduction.................................................................................................... 2-3
2.2 Dual Input Oscilloscope.................................................................................2-3
2.2.1 Vertical........................................................................................................2-3
2.2.2 Horizontal ...................................................................................................2-4
2.2.3 Trigger ........................................................................................................2-4
2.2.4 Advanced Scope Functions.........................................................................2-5
2.3 Dual Input Meter............................................................................................ 2-5
2.3.1 Input A and Input B ....................................................................................2-5
2.3.2 Input A........................................................................................................2-8
2.3.3 Advanced Meter Functions.........................................................................2-9
2.4 Cursor Readout (Fluke 124, 125)...................................................................2-10
2.5 Harmonics Measurements (Fluke 125)..........................................................2-10
2.6 Field Bus Measurements (Fluke 125)............................................................2-11
2.7 Miscellaneous ................................................................................................ 2-11
2.8 Environmental................................................................................................2-12
2.9 Service and Maintenance...............................................................................2-13
2.10 Safety...........................................................................................................2-13
2.11 EMC Immunity............................................................................................2-15

Fluke 123 Specifications

General

Bandwidth	20 MHz
Sample Rate	25 MS/s
Channels	2
Input Impedance	1 MΩ
Display Size	5.7 inches
Temperature Range	0 °C to 50 °C
Dimensions	232 mm x 115 mm x 50 mm
Display	Digital LCD
Memory Depth	512 points per input
Battery Life	7 hours
Weight	1.2 kg
Safety Category	CAT III 600 V