Inhaltsverzeichnis - Refco X-475 Instructions

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 Storage.............................................................................................................................. 5
4 Operation Instructions................................................................................................................ 6
4.1 Instrument - description..................................................................................................... 6
4.1.1 Front panel .................................................................................................................... 6
4.2 Description of function keys .............................................................................................. 6
4.2.1 HOLD key...................................................................................................................... 6
4.2.2 PK/REL key ................................................................................................................... 6
4.2.3 MX/MN key.................................................................................................................... 7
4.2.4 R/SEL key ..................................................................................................................... 7
4.2.5 Backlight key (
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
4.3.9 Temperature test ......................................................................................................... 16
5 Maintenance ............................................................................................................................ 16
5.1 General information......................................................................................................... 16
5.2 Battery replacement ........................................................................................................ 17
5.3 Fuse replacement............................................................................................................ 17
5.4 Cleaning .......................................................................................................................... 18
5.5 End of life ........................................................................................................................ 18
6 Technical specifications........................................................................................................... 18
6.1 Technical features ........................................................................................................... 18
6.1.1 Electrical specifications ............................................................................................... 20
6.1.2 Safety .......................................................................................................................... 20
6.1.3 General data................................................................................................................ 20
6.2 Environment .................................................................................................................... 20
6.2.1 Environmental conditions ............................................................................................ 20
6.2.2 EMC and LVD ............................................................................................................. 20
6.3 Accessories ..................................................................................................................... 21
6.3.1 Standard accessories.................................................................................................. 21
).......................................................................................................... 7
EN-1