User Manual

HT155 - HT157
EN - 57
10.2. STATISTIC ANALISYS CHARARCTERISTICS
Functions: SLM statistic analysis in weighting A
Frequency integration with programmable period
Statistic analysis in 24 hours (24H)
Analysis type Measured parameters (*)
Statistic
L
AFp
, L
AFmax
, L
AF5
, L
AF10
, L
AF50
, L
AF90
, L
AF95
, L
AFmin
, SD,
L
Aeq1s
, L
Aeq,T
, L
AE
, L
AfeqT.
24H L
d
, L
n
, L
dn
further to statistic analysis parameters
Integration
L
xyp
, L
xyi
, L
xeq,1s
, L
xeq,T
, L
AE
, E, C
peak+
, C
peak-
,L
AFmax
,L
AFmin
,L
AFe
T
, L
ASe
q
T
, L
AIe
q
T
(*) X = frequency weighting A/C/Z ; Y = time constants F/S/I
10.3. CHARACTERISTICS OF ANALYSIS IN 1/1 AND 1/3 OCTAVE BAND (HT157
ONLY)
Functions: Spectrum analysis of noise in octave band (1/1)
and 1/3 octave band with integration measure
Frequency weighting:
A/C/Z
Spectrum analysis interface: spectrum frequency ensemble
Total analysis interface: realized with digital filter (see § 12.2)
Weighting Z added with high-pass digital filter (cut-off frequency: 4Hz) (see § 12.4)
Type of filter: digital, G=2 for analysis 1/1 and 1/3 octave band
Central frequencies of 1/1 octave band:
16Hz, 31.5Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz, 16kHz (see §
12.2 and § 12.3)
Central frequencies of 1/3 octave band:
12.5Hz, 16Hz, 20Hz, 25Hz, 31,5Hz, 490Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz,
160Hz, 200Hz, 250Hz, 315Hz, 400Hz, 500Hz, 630Hz, 800Hz, 1kHz, 1.25kHz,
1.6kHz, 2kHz, 2.5kHz, 3.15kHz, 4kHz, 5kHz, 6.3kHz, 8kHz, 10kHz,12.5kHz, 16kHz
(see § 12.2)
Measured parameters (*): L
fmeq,1s
, L
fmeq,T
, L
xyp
, L
xyi
, L
xeq,1s
, L
xeq,T
, L
AE
, E, C
peak
Tm
(*) fm = central frequency; X = frequency weighting A/C/Z ; Y = time constants F/S/I
Noise (E)’s exposure range : 0 65.535Pa
2
h
10.4. CHARACTERITICS OF PORTABLE CALIBRATOR HT151
Selectable SLM levels: 94dB and 114dB (reference 2x10
-5
Pa)
Uncertainty: 0.3dB (94dB); 0.5dB (114dB)
Reference frequency: 1kHz 1%
Distortion: 1%
Reference standard: IEC 60942:2003 Class 1 and ANSI S1.40:1984
Stability time: 3s
Operating temperature: -10°C 50°C (-14°F 122°F)
Storing temperature: -25°C 0°C (-13°F 158°F)
Reference humidity: <90%HR
Atmospheric pressure: 65kPa 100kPa
Power supply: 1x9V battery type IEC 6F22 or NEDA 1604
Dimensions: 117(L) x 53() mm ; 5(L) x 2()”
Weight (with battery and ½” adapter):250g (9 ounces)