Using SM2BAT to monitor Bats
7
Song Meter SM2BAT
Copyright © 2009-2011
to-noise ratio over +36dB gain. (When using +36dB gain, take care to
use the recommended jumper settings. Other permutations may not
provide as good signal quality).
The SMX-US microphone does not need the 2.5V 2.2K bias, but will
work with or without the bias jumper present. Note that the jumper is
required for the SMX-II acoustic microphones.
Schedule
You can configure the Song Meter to record only from sunset to sunrise
each day in half hour segments as follows:
First, configure your latitude, longitude, and UTC offset in the
“Location” settings.
Next, enter the following advanced schedule:
01 AT SSET-00:00:00
02 DO
03 RECORD 00:30:00 (recommended for 384kHz)
or
03 RECORD 01:00:00 (recommended for 192khz)
04 GOTO LINE 03 00X
05 00:00:00
06 GOTO LINE 01 00X
The schedule above will wait for sunset, then record back-to-back one-
hour or half-hour segments until sunrise (the last segment will end
early at sunrise), and repeat daily. You can modify this example to suit
your own needs.
Note that the maximum uncompressed file length is 2GB which works
out to 46.6 minutes at 384kHz mono and 192kHz stereo or 93.2
minutes at 192kHz mono. If you use one hour periods instead of half-
hour periods for 384kHz mono or 192kHz stereo, recordings would be
split into alternating 46.6 and 13.4 minute recordings which may be
confusing.
Audio Settings
The audio settings should be set as follows:
