5.3 Crest- und Period – Trigger
(”Automatic” recording)
Proceed with key in the main menu to
”Start Record”.
In the setup menu, the t
rigger mode
has to be set to
2 = Crest Adv, 3 = Crest
or
4 = Period
(see page 15)
With the key to
”Recording”
mode (directly or after warning of missing GPS).
If no valid GPS time is available, the BATLOGGER asks
for confirmation of the start of the recording without GPS data.
With the key , the recording mode is initiated.
The BATLOGGER is in sampling position and
awaits a
trigger event
(Crest or Period). In this
state, the BATLOGGER continuously digitises
signals from the microphone into internal RAM,
circularly overwriting old data (ring buffer)
(The ”
5
” on the display indicates present Crest factor)
Here,
manual triggering
is possible too: ( )
If a trigger event is detected, the BATLOGGER
displays the activity (peak frequency) and, if
Autorecord is enabled, switches to
”Recording”
and stays in this mode, until
the trigger event disappears again and the
”post trigger time” has passed. The detected peak
frequency is displayed continuously.
Afterwards it switches to
”Saving”
.
The recorded data, including the pre-trigger time,
are stored as
*.wav
file and corresponding meta
information as
*.xml
file onto SD card. Storage time
depends on the recording duration and SD card used.
During storage, the frequency that triggered the event
is displayed. This is a first hint for species recognition.
After storage, the BATLOGGER automatically returns to
”Recording”
.
Automatic recording can be
cancelled
(back to
”Start Record”
) with the keys and .
5.4 Live monitoring
A
Is the BATLOGGER in record mode and live monitoring function is enabled (see page 16) the ultrasonic sounds are
output live on the speaker or headphones. Here, the bat calls are transformed into audible range after the mixer-
principle (heterodyne). The mixer is adapted automatically and continuously to the currently detected frequency of
the calling bat.
The volume can be adjusted during operation.
With the key in the record mode to
“Volume”
.
With the key the volume is lowered, with the key raised.
Volume = 0 output is muted.
BATLOGGER Manual
Elekon AG Nov. 2012
11/28
(Changing Info-Line)
Start Record? >
(Changing Info-Line)
Start w/o GPS? >
(Changing Info-Line)
Sampling . . . ^
5
^
»
»
Menu
Menu
Menu
Saving #
xxxxxxxx
Freq =
xx
kHz
(Changing Info-Line)
Sampling . . . ^
5
^
(Changing Info-Line)
Exit Record >
Menu
(Changing Info-Line)
Volume = 3 <>
Menu
Menu
«
»
Menu
»
»
Act.
xx
kHz
Recording. . . ^
8
^
MENU
»
