BSWA 309 - Page 13

BSWA 308/309 BSWA Technology Co., Ltd
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Level Linearity
Range
2, 3, 4
22dB(A)~136dB
Octave: 30dB~136dB
25dB(A)~136dB
Octave: 33dB~136dB
Dynamic Range
2
123dB (13dB(A)~136dB)
122dB (14dB(A)~136dB)
Peak C Range
2, 3
47dB~139dB
50dB~139dB
Electrical Input
Maximum input voltage: 5Vrms (7.07Vpeak). Input impedance of
preamplifier: >6GΩ
Range Setting
Single range to cover whole dynamic range
Resolution
24Bits
Sampling Rate
48kHz (Sampling interval for LN: 20ms)
Time History
Time domain noise curve display. Duration time: 1min, 2min, 10min
LCD Display
160x160 LCD with white backlight, 14 step contrast level, 1s display
update rate
Mass Storage
4G MicroSD card (TF card)
Post-Processing
Post-processing software VA-SLM can read, analyze and generate
reports of store data.
Export Data
Directly connect to the computer to read the memory card (USB disk)
Output
AC Output (max 5V
RMS
, ±15mA), DC Output (10mV/dB, max 15mA),
RS-232 serial interface and USB (USB disk mode or modem mode)
Alarm
User define alarm threshold. LED indicate the alarm status
Setup Template
5 templates to save user setup for different application, template can be
save in MicroSD card
Auto Power On
Automatic power on and start measurement when power supply
available, ease of integration
Power Supply
4x1.5V alkaline batteries (LR6/AA/AM3), sustainable use of approx.10
hours (depends on battery). It also can be supply by external DC power
(7V~14V 500mA) and USB power (5V 1A)
RTC
Built-in backup battery has been calibrated at factory to the error <26s in
30days (<10ppm, (25±16) ºC). It can keep RTC running when replacing
the main batteries.