D500X USER’S MANUAL
Firmware version 2.2.6
The D 500X is an ultrasound recording unit intended for long-term, unattended recording of
bat calls. The recorder is equipped with four slots for CF cards. The triggering system allows
the device to start recording as a sound is detected. The recording length can be selected in
steps from 0.3 up to 20 seconds. In order not to fill the card too fast at locations with high
activity, a minimum time between two recordings can be applied. The recorder is normally
operated in a low-power mode with no pre-trigger (i.e. the recording starts as the sound
exceeds the chosen threshold level), but both pre-and post-trigger functions are available in
the standard (not low-power) mode.
Some of the features of the D500X are:
•
Built-in electret microphone
•
Jack for external microphone
•
Powered either from 4 AA cells (internal) or external batteries/power supply
•
Timer to turn the unit on/off at desired intervals
•
Weather-protected housing (built-in microphone requires some protection)
•
Size: 165 x 170 x 53 mm, rugged aluminium housing
•
Sampling rates: 44.1 kHz, 300 kHz and 500 kHz (optimized for 500 kHz)
•
ADC resolution: 16 bits
•
Selectable high-pass filter to attenuate low frequency signals
•
Optional external trigger input jack
•
Time/date stamped sound files
