6
SW-BA-e-2020
calculated in parallel with different frequency/time
weightings.
24 h Measurement
Automatic measurement according to user-defined date and
time settings and storage of history data
Frequency weighting
Parallel A, B, C, Z
Time Weighting
Parallel detection of F, S, I and Peak
Internal noise 2
Sound 18 dB (A), 23 dB (C), 31 dB (Z)
Electrical data: 11 dB(A), 16 dB(C), 21 dB(Z)
Sound 20 dB(A), 26 dB(C), 31 dB(Z)
Electrical data: 14 dB(A), 19 dB(C), 24 dB(Z)
Upper limit value 2
134 dB(A)
Increased to 154 dB(A) for a
microphone with 50 mV/Pa
136 dB(A)
Increased to 154 dB(A) for a
microphone with 50 mV/Pa
Frequency
Response1
10 Hz to 20 kHz
20 Hz ~ 12.5 kHz
Linearity range 2, 3
20 dB(A) to 134 dB(A)
25 dB(A) to 136 dB(A)
Dynamic range
2
123 dB (11 dB(A) to 134
dB(A))
122 dB (14dB(A) to 136
dB(A))
Peak C range2
, 3
45 dB(A) to 137 dB(A)
47 dB(A) to 139 dB(A)
Electrical input
Maximum input voltage 5 Vrms (7.07 V peak). Input
impedance of the preamplifier > 6 G
Ω
Range setting
Single range to cover the entire dynamic range
Resolution
24 bits
Sampling rate
48 kHz
Time course
Time domain noise curve display Duration: 1 minute, 2
minutes, 10 minutes
LCD display
LCD 160 x 160 with white backlight, 14 contrast levels,
display update in one second.
Mass storage
4G Micro SD card (TF card)
Post-processing
Post-processing software VA-SLM for reading, analyzing
and generating reports from the stored data
Data export
Direct connection to the computer to read the memory card
(as USB drive)
Output
AC voltage output (maximum 5 VEFF, ±15 mA), DC voltage
output (10 mV/dB, maximum 15 mA),
Serial interface RS-232 and USB (USB drive mode or
modem mode).
Alarm
User-defined alarm threshold LED to indicate the alarm
status
Setup template
5 templates to store user setups for different applications,
template can be stored on the Micro SD card
Automatic switch-on
Automatic switch-on and automatic start of the
measurement when operating voltage is applied, easy
integration
Power supply
4 alkaline batteries 1.5 V (LR6/AA/AM3), sufficient for about
10 hours (depending on battery). The operating voltage can