Chapter II
DMM220 17
Contents
1. GENERAL INSTRUCTIONS .................................................... 18
1.1 Precautions and safety measures ......................................... 18
1.1.1 Before using .................................................................. 18
1.1.2 When using the instrument ............................................ 19
1.1.3 Symbols ........................................................................ 19
1.1.4 Instructions .................................................................... 19
1.1.5 Cleaning ........................................................................ 19
1.1.6 Protection factor (PF)/Humid environment ..................... 20
1.2 Guarantee ............................................................................ 20
1.3 Maintenance ......................................................................... 20
1.4 Unpacking - Repacking ......................................................... 20
2. DESCRIPTION ........................................................................ 21
2.1 Controls and Terminals ......................................................... 21
2.2 Symbols and Abbreviations................................................... 21
3. OPERATING INSTRUCTIONS ................................................ 22
3.1 DC voltage measurements ................................................... 22
3.2 AC voltage measurements (frequency, duty cycle) ................ 22
3.3 DC current measurements .................................................... 23
3.4 Temperature measurements.............................................. 24
3.5 Capacity measurements ....................................................... 24
3.6 AC current measurements (frequency, duty cycle) ................ 25
3.7 Resistance measurements ................................................... 25
3.8 Continuity Check .................................................................. 26
3.9 Diode test ............................................................................. 26
3.10 Duty cyle/frequency measurements (Electronic) ................ 27
3.11 Autoranging/Manual selection ........................................... 27
3.12 MAX/MIN .......................................................................... 27
3.13 Relative mode ................................................................... 28
3.14 Backlighting ...................................................................... 28
3.15 HOLD ................................................................................ 28
3.16 AUTO POWER OFF ......................................................... 28
3.17 Low battery indication ....................................................... 28
4. MAINTENANCE ...................................................................... 29
4.1 Battery installation ................................................................ 29
4.2 Replacing the fuses .............................................................. 30
5. SPECIFICATIONS ................................................................... 30