Guidelines for Microphones
Rev 1.2.1
For best recording quality when using an ultrasonic microphone
Test the mic when it is first received and regularly thereafter using an Ultrasonic Calibrator available
from Wildlife Acoustics. This will allow you to quickly detect a loss in sensitivity
Mount ultrasonic microphones away from all solid surfaces including the recorder itself, walls,
ground, water tree branches and trunks and foliage to avoid recording echoes
Position the mic in the middle of the bat flyway
ATTENTION: SMX-U1 Microphone Has Built-In Gain
The SMX-U1 microphone has built-in gain and requires lower gain on the SM2BAT (+) than the SMX-US
or SMX-UT.
We recommend you set 12 dB of gain on the SM2BAT (+) for normal recording conditions
and 0 dB if you are very close to the bats to avoid clipping.
The gain is set using the jumpers on older
SM2BATs or DIP switches on s. If you need instruction, consult your Users Guide.
