HT155 - HT157
EN - 6
4. OPERATING INSTRUCTIONS
4.1. INSTRUMENT
DESCRIPTION
4.1.1. FRONT
PANEL
LEGEND:
1.
Microphone
2.
ON key
3.
OFF key
4.
CANCEL key
5.
Key
to turn on the backlight
6.
LCD display
7.
ENTER key
8.
EXIT key
9.
OUTPUT key
10.
START/PAUSE key
11.
Arrow key
for programming
12.
Arrow key
for programming
13.
Arrow key
for programming
14.
Arrow key
for programming
15.
SETUP key for programming
Fig. 1: Description of the instrument’s front panel
4.1.2. OUTPUT
INTERFACE
LEGEND:
1.
AC analogue output
2.
RS-232 interface (not active)
3.
Mini USB interface
Fig. 2: Description of the output interface
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 ...