Ht-instruments HT401 Manual de usuario descargar pdf (Pagina 2)

HT401

EN - 1

Table of contents:

1. PRECAUTIONS AND SAFETY MEASURES ............................................................... 2

1.1. Preliminary instructions ..................................................................................................... 2

1.2. During use ......................................................................................................................... 3

1.3. After use ............................................................................................................................ 3

1.4. Definition of measurement (overvoltage) category ............................................................ 3

2. GENERAL DESCRIPTION ........................................................................................... 4

2.1. Measuring average values and TRMS values ................................................................... 4

2.2. Definition of true root mean square value and crest factor ................................................ 4

3. PREPARATION FOR USE ........................................................................................... 5

3.1. Initial checks ...................................................................................................................... 5

3.2. Instrument power supply ................................................................................................... 5

3.3. Calibration ......................................................................................................................... 5

3.4. Storage .............................................................................................................................. 5

4. OPERATING INSTRUCTIONS ..................................................................................... 6

4.1. Instrument description ....................................................................................................... 6

4.1.1. Description of the controls ................................................................................................................. 6

4.2. Description of function keys .............................................................................................. 7

4.2.1. RANGE key ....................................................................................................................................... 7

4.2.2. VoltSense key .................................................................................................................................... 7

4.2.3. MIN MAX key ..................................................................................................................................... 7

4.2.4. SMART HOLD key ............................................................................................................................. 7

4.2.5. Backlight key ............................................................................................................................... 7

4.2.6. MODE key ......................................................................................................................................... 7

4.3. Internal modes of instrument ............................................................................................. 8

4.3.1. PEAK/HOLD mode ............................................................................................................................ 8

4.3.2. AC+DC mode ..................................................................................................................................... 8

4.3.3. AutoV LoZ mode ................................................................................................................................ 8

4.3.4. Disabling the Auto Power OFF function ............................................................................................. 8

4.3.5. Wrong insertion indication ................................................................................................................. 8

4.4. Operating instructions ....................................................................................................... 9

4.4.1. DC Voltage measurement ................................................................................................................. 9

4.4.2. AC Voltage measurement and Frequency ....................................................................................... 10

4.4.3. AC Voltage measurement with low input impedance ...................................................................... 11

4.4.4. DC Current measurement ................................................................................................................ 12

4.4.5. AC Current measurement and Frequency ....................................................................................... 13

4.4.6. Resistance measurement ................................................................................................................ 14

4.4.7. Diode and Continuity test ................................................................................................................. 15

4.4.8. Capacitance measurement .............................................................................................................. 16

4.4.9. Temperature measurement ............................................................................................................. 17

5. MAINTENANCE ......................................................................................................... 18

5.1. Battery and fuses replacement ........................................................................................ 18

5.2. Cleaning the instrument .................................................................................................. 18

5.3. End of life ........................................................................................................................ 18

6. TECHNICAL SPECIFICATIONS ................................................................................ 19

6.1. Technical characteristics ................................................................................................. 19

6.1.1. Electrical characteristics .................................................................................................................. 21

6.1.2. Reference standards ....................................................................................................................... 21

6.1.3. General characteristics .................................................................................................................... 21

6.2. Environment .................................................................................................................... 22

6.2.1. Environmental conditions for use ..................................................................................................... 22

6.3. Accessories ..................................................................................................................... 22

6.3.1. Standard accessories ...................................................................................................................... 22

6.3.2. Optional accessories ....................................................................................................................... 22

7. SERVICE .................................................................................................................... 23

7.1. Warranty conditions ......................................................................................................... 23

7.2. Service ............................................................................................................................ 23