Chapter II
Benchtop multimeter
15
USER'S MANUAL
CONTENTS
1. GENERAL INSTRUCTIONS ..................................................................................................... 16
1.1. Precautions and safety measures .........................................................................................................16
1.1.1. Before use ......................................................................................................................................16
1.1.2. During use.......................................................................................................................................16
1.1.3. Symbols ..........................................................................................................................................17
1.1.4. Opening the instrument ..................................................................................................................17
1.2. Protection devices..................................................................................................................................17
1.3. Safety devices........................................................................................................................................17
1.4. Warranty ................................................................................................................................................18
1.5. Maintenance and metrological verification.............................................................................................18
1.6. Unpacking - Repacking..........................................................................................................................18
1.7. Cleaning.................................................................................................................................................18
2. DESCRIPTION ......................................................................................................................... 19
2.1. Selector switch.......................................................................................................................................19
2.2. Keypad ...................................................................................................................................................19
2.2.1. Keypad ............................................................................................................................................19
2.2.2. Switching on and off........................................................................................................................19
2.3. Display ...................................................................................................................................................19
2.4. Power supply .........................................................................................................................................19
2.5. Measurement input terminals ................................................................................................................19
2.6. Tilt stand ................................................................................................................................................20
3. COMMISSIONING.................................................................................................................... 20
3.1. Connecting the test leads ......................................................................................................................20
3.2. Switching on, switching off the instrument.............................................................................................20
3.3. Special configurations............................................................................................................................20
3.4. Multimeter maintenance ........................................................................................................................21
3.4.1. Fuse self-test ..................................................................................................................................21
3.4.2. Replacing the fuses ........................................................................................................................21
4. FUNCTIONAL DESCRIPTION.................................................................................................. 21
4.1. SEL key.................................................................................................................................................21
4.1.1. V
AC
position .....................................................................................................................................21
4.1.2. mV position .....................................................................................................................................22
4.1.3. V
DC
position.....................................................................................................................................22
4.1.4.
Ω
position........................................................................................................................................22
4.1.5.
position .......................................................................................................................................23
4.1.6. 5 mA / 50 mA / 500 mA / 10 A positions .........................................................................................23
4.2. RANGE key............................................................................................................................................23
4.3. REL key .................................................................................................................................................24
4.4. Pk +/- key...............................................................................................................................................24
4.5. MEM key ................................................................................................................................................24
5. TECHNICAL SPECIFICATIONS............................................................................................... 24
5.1. DC voltages ...........................................................................................................................................24
5.2. AC voltages (AC and AC+DC)...............................................................................................................25
5.3. DC current .............................................................................................................................................25
5.4. AC currents (AC and AC+DC) ...............................................................................................................25
5.5. Resistance / Continuity ..........................................................................................................................26
5.6. Capacitance ...........................................................................................................................................26
5.7. Diode threshold voltage measurement ..................................................................................................26
5.8. Frequencies ...........................................................................................................................................27
5.9. Duty cycle %+, %-..................................................................................................................................27
6. GENERAL SPECIFICATIONS.................................................................................................. 28
Summary of Contents for MX 553
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