4
4
5
5
Fire hazard due to incorrect polarity
Installing the battery incorrectly may damage the device and the
battery. Pay careful attention to inserting the battery with the cor-
rect polarity.
Possible damage caused by leaking battery
Battery leakage may damage the device permanently. Remove the battery from
the device if it is not going to be used for a long time.
Introduction
Your digital sound level meter allows for automatic or manual range selection
out of 6 ranges from 30 dB to 130 dB and offers a resolution of 0.1 dB. The de-
vice complies with the ANSI S1.4 and IEC 651 Type 2 standards.
A particular feature is the option to compensate for the background level by
pressing a key and to specifically evaluate noise sources in the foreground. Us-
ing two weighting filters (A or C), the sound level is weighted according to IEC
standard. Furthermore, it is possible to determine the maximum and minimum
values over a measuring period.
The sound level meter has sockets for powering external components, an audio
output, an envelope output and a digital RS232 interface for data transfer to a
PC.
