3
● Digital display, good anti-interference performance, power
saving
● With the backlight feature, it is appropriate for gathering
the sound data at night. To save power, backlight auto power
off function is provided.
● Composite material injection molding process is adopted
for casing with anti-drop structure design. It is not only
extremely wear-resisting, but also elegant.
● With power saving and high-reliability circuit design,
well-designed high-efficiency power supply circuit makes
the batteries more durable.
V. Specifications
● Sound pressure accuracy: ± 1.5 dB (sound pressure
standard, 94 dB @ 1KHz).
● Sound pressure accuracy: ±5 dB (sound pressure standard,
94 dB @ 8KHz).
● Sound pressure frequency response: 30Hz - 8KHz.
● Dynamic range of sound pressure: 50 dB (for each
measurement gear level).
● Sound pressure measurement scope: 30-130 dBA, 35-130
dBC.
● Sound pressure frequency weighting characteristics: A and
C characteristics.
● Dynamic characteristic of sound pressure: FAST 125ms,
SLOW 1sec
● Microphone: polarized capacitive microphone.
● Digital display: 4-digit, resolution: 0.1 dB, sampling rate:
2 times/sec.
● Analog bar display: Each analog bar represents 1 dB,
sampling rate is 20 times/sec.
● Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB,
60—110 dB, 70—120 dB, 80-130 dB, 6 gear levels in total.
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