Chapter II
16
Portable digital multimeter
CONTENTS
1. GENERAL INSTRUCTIONS................................................................................................................. 17
1.1. Precautions and safety measures .................................................................................................. 17
1.2. Protection devices .......................................................................................................................... 18
1.3. Safety devices ................................................................................................................................ 19
1.4. Warranty ......................................................................................................................................... 19
1.5. Maintenance ................................................................................................................................... 21
1.6. Unpacking - Repacking .................................................................................................................. 19
2. DESCRIPTION...................................................................................................................................... 20
2.1. Selector switch ............................................................................................................................... 20
2.2. Keypad............................................................................................................................................ 20
2.3. Display ............................................................................................................................................ 20
2.4. Power supply .................................................................................................................................. 20
2.5. Input terminals ................................................................................................................................ 20
3. COMMISSIONING ................................................................................................................................ 21
3.1. Connecting the test leads............................................................................................................... 21
3.2. Switching on the instrument ........................................................................................................... 21
3.3. Switching off the instrument ........................................................................................................... 21
3.4. Special configurations .................................................................................................................... 21
3.5. Multimeter maintenance ................................................................................................................. 22
4. FUNCTIONAL DESCRIPTION ............................................................................................................. 23
4.1. SEL/ON key................................................................................................................................... 23
4.2. RANGE key .................................................................................................................................... 25
4.3. REL key .......................................................................................................................................... 25
4.4. Pk +/- key........................................................................................................................................ 25
4.5. HOLD key ....................................................................................................................................... 26
4.6. PRINT key ...................................................................................................................................... 26
5. TECHNICAL SPECIFICATIONS .......................................................................................................... 27
5.1. DC voltages .................................................................................................................................... 27
5.2. AC voltages (AC and AC+DC) ....................................................................................................... 27
5.3. DC current ...................................................................................................................................... 28
5.4. AC currents (AC and AC+DC)........................................................................................................ 28
5.5. Resistance / Continuity................................................................................................................... 28
5.6. Capacitance.................................................................................................................................... 29
5.7. Diode threshold voltage measurement .......................................................................................... 29
5.8. Frequencies.................................................................................................................................... 29
5.9. Duty cycle %+, %- .......................................................................................................................... 29
6. GENERAL SPECIFICATIONS.............................................................................................................. 30
6.1. Accessories .................................................................................................................................... 31
