User guide
HT327
EN - 1
Table of Contents:
1. SAFETY PRECAUTIONS AND PROCEDURES .......................................................... 2
1.1. Preliminary ........................................................................................................................ 2
1.2. During use ......................................................................................................................... 3
1.3. After use ............................................................................................................................ 3
1.4. Measuring (overvoltage) categories definitions ................................................................. 3
2. GENERAL DESCRIPTION ........................................................................................... 4
2.1. Mean value and TRMS: definition ..................................................................................... 4
2.2. True root mean square value and crest factor: definition .................................................. 4
3. PREPARATION FOR USE ........................................................................................... 5
3.1. Initial .................................................................................................................................. 5
3.2. Supply voltage ................................................................................................................... 5
3.3. Calibration ......................................................................................................................... 5
3.4. Storage .............................................................................................................................. 5
4. OPERATING INSTRUCTIONS ..................................................................................... 6
4.1. Instrument - description ..................................................................................................... 6
4.1.1. Front panel .................................................................................................................................. 6
4.2. Description of function keys .............................................................................................. 7
4.2.1. HOLD key ................................................................................................................................... 7
4.2.2. PK/REL key ................................................................................................................................ 7
4.2.3. MX/MN key ................................................................................................................................. 7
4.2.4. R/SEL key ................................................................................................................................... 7
4.2.5. Backlight key ( ) .................................................................................................................... 7
4.2.6. Disable Auto Power OFF ............................................................................................................ 7
4.3. Measurements................................................................................................................... 8
4.3.1. DC Voltage measurement .......................................................................................................... 8
4.3.2. AC Voltage measurement .......................................................................................................... 9
4.3.3. DC Current measurement ........................................................................................................ 10
4.3.4. AC Current measurement ......................................................................................................... 11
4.3.5. Resistance measurement and Continuity Test ......................................................................... 12
4.3.6. Diode test .................................................................................................................................. 13
4.3.7. Capacitance measurement ....................................................................................................... 14
4.3.8. Frequency measurement .......................................................................................................... 15
5. MAINTENANCE ......................................................................................................... 16
5.1. Battery and Fuse replacement ........................................................................................ 16
5.2. Cleaning .......................................................................................................................... 16
5.3. End of life ........................................................................................................................ 16
6. TECHNICAL SPECIFICATIONS ................................................................................ 17
6.1. Technical features ........................................................................................................... 17
6.1.1. Electrical specifications ............................................................................................................ 19
6.1.2. Reference guidelines ................................................................................................................ 19
6.1.3. General data ............................................................................................................................. 19
6.2. Environment .................................................................................................................... 19
6.2.1. Environmental conditions ......................................................................................................... 19
6.3. Accessories ..................................................................................................................... 19
6.3.1. Standard accessories ............................................................................................................... 19
6.3.2. Optional accessories ................................................................................................................ 19
7. SERVICE .................................................................................................................... 20
7.1. Warranty conditions ......................................................................................................... 20
7.2. After-sale service ............................................................................................................. 20