![background image](http://html1.mh-extra.com/html/ht/ht155/ht155_user-manual_2178086023.webp)
HT155 - HT157
EN - 21
5.1.4. INTEGRATION ANALYSIS OPERATIONS
In this type of analysis, the instrument carries out an instant measurement, measures
integrated values and peak “C” values of the sound pressure level in the three frequency
weightings (A, C, Z) and in the three time constants (Slow, Fast, Impulse)
1. Use the “ ” or “
” keys to select the “Integral” icon (see Fig. 19) and confirm with
“
”.
Fig. 19: Integral analysis selection
2. The instrument shows the following screen relevant to the measured instant quantities:
Line 1
Lines 2-7
Line 8
Line 9
Fig. 20: Screen of instant values of Integral analysis
Line 1
The left part shows the current date/time set on the instrument, while the
right part shows the measuring range currently used by the instrument.
Date/time setting
Use the “ ” and “
” keys to move the flashing cursor to fields YYYY
(year), MM (month), DD (day), HH (hours), MM (minutes) SS (seconds)
and use the “
” and “
” keys to carry out the desired programming
Configuration of the measuring range
Use the “ ” and “
” keys to move the flashing cursor to symbol “R” and
use the “
” and “
” keys to select the measuring range among the
following options: 0
90dB, 10
100dB, 20
110dB, 30
120dB, 40
130dB, 50
140dB according to the reading carried out by the
instrument. After each range modification, the reading takes
approximately 3s to become stable
Summary of Contents for HT155
Page 1: ... Copyright HT ITALIA 2011 Release EN 1 02 28 12 2011 HT155 HT157 User manual ...
Page 2: ......
Page 62: ...HT155 HT157 EN 60 12 APPENDIXES 12 1 APPENDIX 1 FREQUENCY WEIGHTING CHARACTERISTICS ...
Page 63: ...HT155 HT157 EN 61 12 2 APPENDIX 2 CHARACTERISTICS OF 1 3 OCTAVE BAND FILTER ...
Page 64: ...HT155 HT157 EN 62 ...
Page 65: ...HT155 HT157 EN 63 ...
Page 67: ...HT155 HT157 EN 65 12 4 APPENDIX 4 CHARACTERISTICS OF 4HZ HIGH PASS DIGITAL FILTER ...