Pettersson M500 USB Ultrasound Microphone
USING THE M500
Getting started
Connect the M500 to a USB 2.0 high-speed or USB 3 port of your computer, using the supplied USB cable*. A sound will
be heard from the computer as an acknowledgement and the text "Pettersson" on the M500 will be illuminated to indicate
that the M500 receives power from the computer. This process may take a few seconds. The M500 is now ready to be used.
If no "USB device connected" acknowledgement sound is heard and/or the red indicator remains constantly on after
plugging the M500 into the USB jack, please disconnect the M500 a few seconds and then connect it again and wait to let it
establish the USB connection.
Next, start the BatSound Touch software. There will be two empty diagrams for the waveform (oscillogram) and
spectrogram. Tap the "Live View" symbol
above the respective diagram to turn on the Live View. Rub two
fingers in front of the microphone and you will "see" this sound in real-time on the screen. The red indicator on the M500
will flash once every second in this mode.
To make a recording, simply tap the red recording symbol
in the toolbar at the right The red indicator will then
light constantly. To stop the recording, tap the black stop
symbol.
Other recording modes are also available, such as the triggered and circular buffer modes. For more information about these,
please refer to the BatSound Touch User Manual in the BatSound Touch program folder.
The recorded files will be saved in the C:\Users\"Your Account"\Documents\BatSound\Recordings\ folder by default. "Your
Account" is the name of the user account that is currently used.
* In order to connect the M500 to a computer with a micro USB jack (e.g. a tablet PC) an adapter with an OTG USB micro
plug is required. Separate cables with USB Mini-B and USB Micro-B/OTG plugs are also available on the market.
Changing the microphone directionality
The M500 comes with a detachable directional horn. In order to obtain a more directional microphone characteristic as well
as a higher on-axis sensitivity, the directional horn should be used. To remove the horn, pull the horn straight away from the
microphone tip. Do not put pressure on the horn sideways - this may damage the microphone! When the horn is put back on
the microphone tip, please hold the horn at the edge while pressing it onto the tip. This avoids increasing the air pressure
over the microphone port, which might occur if the horn opening is closed e.g. with a finger.
Weather protection
The M500 is not waterproof and should be protected against the elements if used e.g. under humid conditions. The housing
and circuit board are relatively insensitive to humidity, but the microphone element and USB connector may require
protection.
M500 Specifications
Microphone:
Advanced electret
Sampling frequency:
500 kHz
ADC resolution:
16 bits
Interface:
USB 2.0, high speed or USB 3
Anti-aliasing filter:
8th order, 210 kHz
Frequency range:
10 kHz - 210 kHz
Real-time monitoring:
Through the PC sound card (under-sampling)
Size:
43 x 114 x 13 mm (incl microphone horn)
Weight:
60 g
Power:
USB bus powered (5 V, 150 mA max)
Pettersson Elektronik AB, Uppsala Science Park, 75183 Uppsala, Sweden
