HT instruments HT327 User Manual
Page 2
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