HT instruments HT326 User Manual
Page 2
HT326
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
3.
PREPARATION FOR USE ........................................................................................... 4
3.1.
Initial .................................................................................................................................. 4
3.2.
Supply voltage ................................................................................................................... 4
3.3.
Calibration ......................................................................................................................... 4
3.4.
Storage .............................................................................................................................. 4
4.
OPERATING INSTRUCTIONS ..................................................................................... 5
4.1.
Instrument - description ..................................................................................................... 5
4.1.1.
Front panel .................................................................................................................................. 5
4.2.
Description of function keys .............................................................................................. 6
4.2.1.
HOLD key ................................................................................................................................... 6
4.2.2.
R (RANGE) key .......................................................................................................................... 6
4.2.3.
REL key ...................................................................................................................................... 6
4.2.4.
SEL key ...................................................................................................................................... 6
4.2.5.
Backlight key (
) .................................................................................................................... 6
4.2.6.
Auto Power OFF ......................................................................................................................... 6
4.3.
Measurements................................................................................................................... 7
4.3.1.
DC Voltage measurement .......................................................................................................... 7
4.3.2.
AC Voltage measurement .......................................................................................................... 8
4.3.3.
DC Current measurement .......................................................................................................... 9
4.3.4.
AC Current measurement ......................................................................................................... 10
4.3.5.
Resistance measurement ......................................................................................................... 11
4.3.6.
Continuity test ........................................................................................................................... 12
4.3.7.
Diode test .................................................................................................................................. 13
4.3.8.
Frequency and Duty Cycle measurement ................................................................................ 14
4.3.9.
Capacitance measurement ....................................................................................................... 15
5.
MAINTENANCE ......................................................................................................... 16
5.1.
Batteries 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.
Reference standards ................................................................................................................ 19
6.1.2.
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