5
Time weighting (RMS detection): Fast
, according to IEC 61672-1 class 2.
Slow
, according to IEC 61672-1 class 2.
Impulse,
according to IEC 61672-1 class 2.
•
Reference conditions:
Type of the acoustic field:
Free
Reference sound pressure level:
94.0dB (related to 20µPa)
Reference level range:
60 to 120dB
Reference frequency:
1000Hz
Reference temperature:
+23
℃
Reference relative humidity:
50%RH
Reference static pressure:
101.325 kPa
Reference incidence direction:
Perpendicular to the front of the microphone
diaphragm.
•
Calibration:
Acoustic using calibrator TES-1356 or equivalent.
Calibration check frequency is 1000Hz.
Nominal calibration level for the free field:
94.1dB
Nominal calibration level for the diffuse field:
94.0dB
•
Frequency for acoustic testing:
8000Hz
.
•
Warm-up time:
≦
2min
•
Sampling interval:
Bar graph indication → 125 ms approx.
Numeric indication → 1 sec approx.
•
Data record capacity:
Data can be stored in the memory.
Max. 200M data can be stored (micro SD CARD 4GB).
Max. 255 blocks can be split.
•
Microphone equivalent electrical impedance (electrical input device):
Replace the microphone capsule with a series capacitance of 27pF +/- 3pF.
Display LCD
•
Display screens
:
4 digit numerical indication of sound level, from 30.0 to 130.0dB with 0.1dB
resolution.
Bar-graph indication of current sound level with 1dB resolution.
Sound level range indicator: 30–90dB, 40–100dB, 50–110dB, 60–120dB or
70–130dB in five ranges.
Time display; year – month – day and hour: minute: second.
•
Display update rate:
1 second
•
Display first indication:
Depends on the condition the instrument when it was last
turned off.
•
Warning indications:
Out-of-range indications:
OVER displayed at upper limit of the range
UNDER displayed at lower limit of the range
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