MASTECH (Digital Sound Level Meter) has been designed according to the IEC651 Type2, ANSI S1.4 Type 2.
Overview:
- Accuracy: +-1.5dB
- Response frequency: 31.5Hz-8kHz
- Dynamic range: 50dB
- Frequency Weighting: A\C
- Time weighting: FAST 125ms, SLOW 1sec
- Microphone: Electret Condenser microphone
- Digital Display: 4 digitals, resolution 0.1dB, sampling rate 2 times/s
- Analog bar display: Each analog bar is as 1 dB, sampling rate 20 times/s
- Measurement ranges: 30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB, Total of 6 ranges
- Auto-range: Micro-computer can choose the best measurement ranges
- Over range indicator: UNDER (less than range) and OVER (over range)
- AC signal output: 0.707 Vrms at FS (Auto-range mode isn't included) Output impedance approx. 600Ω
- DC signal output: 10mV/dB Output impedance approx.100Ω
- Power supply: Four LR03 AM4 1.5V SIZE AAA alkaline cells
- Power life: About>35hrs (alkaline cells) Continuous operation
- AC adapter: Voltage 9vDC
- Voltage ripple < 100mVpp
- Supply Current >100mADC
- Socket pin Ground
- Casing positive
- External Diameter 3.5mm
- Data recording: 16000 data (extended to 128000 data)
- Operating temperature: 0℃ to +40℃
- Operating humidity: 10~80%RH
- Storage temperature: -10℃ to 60℃
- Storage humidity: 10 to 70%RH
- Dimensions: 245(L)x80(W)x35(H)mm
- Weight: Approx. 350g (including battery)
- Safety rating: CE(EMC) RoHS
Features:
- Display: 2000 counts
- Data Logging: 16000 records
- Auto Ranging
- Auto Power Off
- AC Singal Output: 0.707 Vrms at FS (Auto-range mode isn’t included) Output impedance approx.600Ω
- DC Singal Output: 10mV/dB Output impedance approx.100Ω
- AC Adapter
– Voltage 9VDC
– Voltage Ripple <100m Vpp
– Supple Current >100m ADC
– Socket: pin Ground
– Casing Positive
– External Diameter 3.5mm
- Fast
- Low
- A Weighting
- B Weighting
- Date and Time Display
- MAX
- Data Hold
- Display Backlight
- Low Battery Display
- Analog Bar Indication
- Over Range Indication
- RS-232 Pclink
- USB Interface
| Specification | Range | Resolution | Accuracy |
| Sound Pressure | 30dB~80dB | 0.1dB | +-1.5dB |
| 40dB~90dB | 0.1dB | +-1.5dB | |
| 50dB~100dB | 0.1dB | +-1.5dB | |
| 60dB~110dB | 0.1dB | +-1.5dB | |
| 70dB~120dB | 0.1dB | +-1.5dB | |
| 80dB~130dB | 0.1dB | +-1.5dB | |
| Sample Rate | 2 times/s | ||
| Dynamic | 50dB | ||
| Frequency | 31.5Hz~8KHz |
