|Frequency range||31.5Hz - 8kHz|
|Measurement range (A)||30dB - 130dB|
|Frequency weighting||A, C|
|Time weighting||F, S|
|Standards||IEC 61672-1 Class 2|
The Voltcraft DL-161S is a sound level meter with USB connectivity.
See Voltcraft DL-161S/Info for more details (such as lsusb -vvv output) about the device.
This is a rebadged CEM DT-173.
The host sends commands and receives responses via a virtual serial port, with USB bulk endpoint 2 as a backend. A command consists of a single byte followed by any arguments to the command.
|0x0c||0xff||Calibrate device, 2 bytes payload:|
|1||Calibration value, as a signed integer between -10 and 10, where 1 represents 0.1 dB|
|0x0d||0xff||Get stored measurement count, 2 bytes payload:|
|Response has 3 byte payload, representing the number of bytes used in sample memory as a little-endian integer. Each sample uses two bytes.|
|0x0f||Get stored measurements, 2 bytes payload is offset into buffer (as pages? page size?)|