HT instruments HT157 User Manual
Page 4
HT155 - HT157
EN - 2
8.1.
Foreword ........................................................................................................................ 49
8.2.
Minimum system requirements ...................................................................................... 49
8.3.
Installing the driver USB ................................................................................................. 49
8.4.
Use of SoundView software ........................................................................................... 51
8.4.1.
Copy and Print commands .......................................................................................... 51
8.4.2.
File menu ..................................................................................................................... 52
8.4.3.
View menu ................................................................................................................... 53
8.4.4.
Name Menu ................................................................................................................. 53
8.4.5.
Result menu ................................................................................................................ 54
8.4.6.
Calibration menu ......................................................................................................... 54
8.4.7.
Help menu ................................................................................................................... 54
9. MAINTENANCE ............................................................................................................ 55
9.1.
General information ........................................................................................................ 55
9.2.
replacing the batteries .................................................................................................... 55
9.3.
Cleaning the instrument ................................................................................................. 55
9.4.
End of life ....................................................................................................................... 55
10.
TECHNICAL SPECIFICATIONS ............................................................................. 56
10.1.
Technical specifications .......................................................................................... 56
10.2.
Statistic analisys chararcteristics ............................................................................ 57
10.3.
Characteristics of analysis in 1/1 and 1/3 octave band (HT157 only) .................... 57
10.4.
Characteritics of portable calibrator HT151 ............................................................ 57
10.5.
General characteristics ........................................................................................... 58
10.6.
Accessories ............................................................................................................ 58
11.
SERVICE ................................................................................................................ 59
11.1.
Warranty conditions ................................................................................................ 59
11.2.
Service .................................................................................................................... 59
12.
APPENDIXES ......................................................................................................... 60
12.1.
Appendix 1 – Frequency weighting characteristics ................................................ 60
12.2.
Appendix 2 – characteristics of 1/3 octave band filter ............................................ 61
12.3.
Appendix 3 – frequency weighting A, C ................................................................. 64
12.4.
Appendix 4 – characteristics of 4Hz high-pass digital filter .................................... 65