Key Technical Specifications:
Accuracy: Class 1 conforming to standards such as IEC
61672-1:2013, IEC 60651:1979, IEC 60804:2000, ANSI S1.4-1983 and ANSI
S1.43-1997.
Measuring (Sound Pressure) Range: 22 … 136 dB(A)
typical.
Overall Frequency Response: 3 Hz … 20 kHz.
Frequency Analysis:
- 1/1-Octave
Band Filter: 8 Hz … 16 kHz.
- Optional
1/3-Octave Band Filter Upgrade: 6.3 Hz … 20 kHz.
Microphone:
- Type:
½″ condenser microphone, Class 1.
- Sensitivity:
40 mV/Pa.
- Frequency
Response: 3 Hz … 20 kHz.
- Connector:
TNC; Power supply via ICCP standard.
Frequency Weightings: A, B, C, Z.
Time Weightings: Fast (F) 125 ms, Slow (S) 1 s, Impulse (I)
35 ms.
Output / Measuring Functions:
- LXY
(SPL)
- LXeq
- LXYSD,
LXSEL, LXE
- LXYmax
/ LXYmin
- LXPeak
- LXN
(statistics 1-99 %)
(“X” = frequency weighting A/B/C/Z, “Y” = time weighting F/S/I)
Inherent Noise:
- Microphone:
19 dB(A), 25 dB(C), 31 dB(Z)
- Electronics:
13 dB(A), 17 dB(C), 24 dB(Z)
AD Converter / Sampling:
- Resolution:
24 bit.
- Sample
Rate: Standard 48 kHz; LN Mode 20 ms.
Display & Memory:
- Display:
160×160 pixel back-lit LCD including numerical, bar-graph and graphical
sound curves.
- Memory:
4 GB Micro SD card standard.
Interfaces: USB (mass-storage & software readable) and
RS-232.
Voltage/Analog Outputs: AC 5 V RMS; DC 10 mV per dB.
Power Supply:
- 4 ×
1.5 V AA batteries
- 12 V /
1 A power adapter
- 5 V /
1 A USB power input
Battery Life: Minimum 10 h continuous use.
Standards Compliance: GB/T 3785.1-2010, GB/T 3785.2-2010,
IEC 60651:1979, IEC 60804:2000, IEC 61672-1:2013, ANSI S1.4-1983, ANSI
S1.43-1997.
Logging Interval: 1 s … 24 h (adjustable).
Alarm Function: User-adjustable alarm level.