HT instruments HT157 User Manual
Page 3
HT155 - HT157
EN - 1
Table of contents:
1. PRECAUTIONS AND SAFETY MEASURES .................................................................. 3
1.1.
Preliminary instructions .................................................................................................... 3
1.2.
During use ........................................................................................................................ 3
1.3.
After use ........................................................................................................................... 3
2. GENERAL DESCRIPTION .............................................................................................. 4
3. PREPARATION FOR USE .............................................................................................. 5
3.1.
Initial inspections .............................................................................................................. 5
3.2.
Instrument power supply .................................................................................................. 5
3.3.
Calibration ........................................................................................................................ 5
3.4.
Storage ............................................................................................................................. 5
4. OPERATING INSTRUCTIONS ........................................................................................ 6
4.1.
Instrument description ...................................................................................................... 6
4.1.1.
Front panel .................................................................................................................... 6
4.1.2.
Output interface ............................................................................................................. 6
4.2.
Description of function keys ............................................................................................. 7
4.3.
Analogue output description............................................................................................. 7
4.4.
Display contrast adjustment ............................................................................................. 8
4.5.
Turning ON/OFF the instrument ...................................................................................... 8
4.6.
Configuration of measuring parameters ........................................................................... 9
4.6.1.
Foreword ....................................................................................................................... 9
4.6.2.
Programming menu interface ........................................................................................ 9
4.6.3.
Defining the measure name ........................................................................................ 11
5. CARRYING OUT MEASUREMENTS ............................................................................ 13
5.1.
Statistic analysis of noise ............................................................................................... 13
5.1.1.
Initial operations .......................................................................................................... 13
5.1.2.
Statistic analysis operations ........................................................................................ 14
5.1.3.
24-hour analysis operations ........................................................................................ 17
5.1.4.
Integration analysis operations .................................................................................... 21
5.2.
Noise analysis in 1/1 and 1/3 octave band (HT157 only)............................................... 24
5.2.1.
Initial operations .......................................................................................................... 24
5.2.2.
Octave band analysis (1/1) .......................................................................................... 25
5.2.2.1.
Operations for sections LIST, GRAPH and TOTAL ................................................... 25
5.2.3.
Analysis in third-octave band (1/3) .............................................................................. 30
5.2.3.1.
Operations for sections LIST, GRAPH ....................................................................... 30
5.2.3.2.
Operations in TOTAL section ..................................................................................... 33
6. INSTRUMENT ACOUSTIC CALIBRATION ................................................................... 35
6.1.1.
Foreword ..................................................................................................................... 35
6.1.2.
Preliminary operations ................................................................................................. 35
6.1.3.
Acoustic calibration with calibrator HT151 .................................................................. 37
6.1.3.1.
Replacing the calibrator battery ................................................................................. 38
6.1.3.2.
Calibration result display ............................................................................................ 39
6.1.4.
Direct acoustic Calibration ........................................................................................... 39
7. OPERATIONS WITH THE MEMORY ............................................................................ 40
7.1.
Recalling results on the display...................................................................................... 40
7.1.1.
Recalling the statistic analysis data on the display ..................................................... 41
7.1.2.
Recalling the 24H analysis data on the display ........................................................... 42
7.1.3.
Recalling the integration measurement data on the display ........................................ 44
7.1.4.
Recalling the data of the octave band analysis (1/1) on the display ........................... 45
7.1.4.1.
Recalling the data of the analysis in Total octave band (1/1) ..................................... 46
7.1.5.
Recalling the data of the analysis in third-octave band (1/3) on the display ............... 47
7.2.
Data transfer onto USB Pen Drive ................................................................................. 48
8. OPERATIONS WITH SOUNDVIEW SOFTWARE ......................................................... 49