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HT155 - HT157
EN - 36
Line 4
This line indicated the sound pressure level set on the portable calibrator
HT151 during the calibration operation (see § 6.1.3)
Line 5
This line shows the results of the calibration operation. When the
instrument is calibrated by means of frequency weighting type C, “Lpx=”
indicates the current sensitivity level of the microphone
Line 6
This line contains the menu items which can be selected by the user
The “Rec.” option allows displaying the results of each calibration
operation
The “Cal.” Option allows activating the calibration procedure (see §
6.1.3)
The “App.” option is used for saving each setting defined by the user
during the manual adjustment procedures of the sensitivity levels
The “Mod.” option is used for the selection of the items relevant to the
manual adjustments of the sensitivity levels
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 ...