sauter KERN SW 1000 Instruction Manual page 12

PWR:
Standard DC socket (diameter 2.1 mm) for power supply, can be connected to an
external power supply unit 7 - 14 V, 500 mA.
☆Note : External voltages above 14 V can damage the sound pressure meter!
Mini USB:
Mini USB port for connecting to a computer in USB drive mode or modem mode,
see 4.4.10 USB Mode for
used as an additional external power supply, but the power supply must be
capable of handling 5 V/1 A.
USB drive mode: The files on the Micro SD memory card can be accessed
directly in this mode, no driver needs to be installed.
The computer can recognize the Mini USB port as a serial port (virtual serial port,
driver installation required) and address the sound pressure meter via the RS-232
protocol, for more information see 5.
☆ Note: The power supply must have a current of at least 1 A and the cable
must be able to transmit this current (do not use a cable with ferrite bead for
the power supply). After connecting to the computer, select the working mode.
Otherwise the computer will not be able to recognize the USB interface. The mini-
USB port and the RS-232 port cannot be used simultaneously when the modem
mode is selected.
Micro SD card:
Micro SD socket: For connecting a Micro SD card for storing SWN, OCT and CSD
files. We recommend that you use the card reader to format the Micro SD card
and not the USB drive mode. The Micro SD card supplied with the sound
pressure meter is already preformatted.
☆ Note: Hold the front (with the scratch protection) of the Micro SD card
downwards when inserting it.
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more information. The Mini USB connector can also be
SW-BA-e-2020