HT instruments HT77N - Manual (Page 2)

HT77N
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
3. PREPARATION FOR USE ........................................................................................... 4
3.1. Initial checks ............................................................................................................................. 4
3.2. Instrument power supply.......................................................................................................... 4
3.3. Calibration ................................................................................................................................. 4
3.4. Storage ...................................................................................................................................... 4
4. OPERATING INSTRUCTIONS ..................................................................................... 5
4.1. Instrument description.............................................................................................................. 5
4.1.1. Description of the controls...................................................................................................... 5
4.1.2. Alignment marks and hand protection .................................................................................... 5
4.2. Description of functions keys................................................................................................... 6
4.2.1. /Data/Auto/Peak Hold key .................................................................................................. 6
4.2.2. Wide/50-60Hz/Compare key .................................................................................................. 7
4.2.3. Range key ............................................................................................................................. 7
4.2.4. Auto Backlight sensor ............................................................................................................ 7
4.3. Operating instruction ................................................................................................................ 8
4.3.1. AC Current measurement ...................................................................................................... 8
4.3.2. Leakage current measurement .............................................................................................. 9
5. MAINTENANCE.......................................................................................................... 10
5.1. General information ................................................................................................................ 10
5.2. Battery replacement ............................................................................................................... 10
5.3. Cleaning the instrument ......................................................................................................... 10
5.4. End of life ................................................................................................................................ 10
6. TECHNICAL SPECIFICATIONS................................................................................. 11
6.1. Technical characteristics ....................................................................................................... 11
6.1.1. Electrical specifications .........................................................................................................12
6.1.2. Reference guideline ..............................................................................................................12
6.1.3. General characteristics .........................................................................................................12
6.2. ENVIRONMENT ..................................................................................................................... 12
6.2.1. Environmental conditions for use ..........................................................................................12
6.3. Accessories............................................................................................................................. 12
6.3.1. Standard accessories ...........................................................................................................12
7. SERVICE .................................................................................................................... 13
7.1. Warranty conditions ............................................................................................................... 13
7.2. Service..................................................................................................................................... 13