Basismekanismen i detektorene er at de omformer flaggermusenes
artskarakteristiske ultralyder som de bruker til ekko-lokalisering, til hørbar
lyd (for oss). Dette gir en lyd der vi kan kjenne igjen de ulike artene.
De enkleste modellene har bare denne
lydomformingsfunksjonen kalt heterodyning, som oversetter lyden i
nåtid på en valgt frekvens. Slike detektorer gjør det mulig å gjenkjenne de
fleste artene, og for eksempel finne kolonier. Zoologisk Forening anbefaler
dette for nybegynnere.
En mer avansert form for direkte hørbar oversettelse er frekvensdeling
der alle frekvensene av flaggermusens ultralyd blir oversatt.
De mer kostbare modellene for viderkommende entusiaster og
fagfolk har i tillegg tidsekspansjon. Lyden lagres da først i et
minne. Deretter kan den spilles i et redusert tempo der alle detaljene kommer
fram. Dette gir også bedre muligheter for opptak, arkivering og dokumentasjon.
Mer om
ekkolokalisering og flaggermus på Norsk Zoologisk Forenings sider
Produsentens info:
- Grafical display of bat calls: Sonogram with individual adjustable resolution, ideal for easy bat detection (4 pictures may be stored in internal memory).
- Spectrogram (persistant display)
- Frequency range 15 to 150 kHz infinitely adjustable in steps of 1 kHz
- Automatic tracking of bats with strongest calls in AutoBat-mode (detachable)
- Bat list, adjusted to the predefined maxifrequency, for easy determination of bats
- Bat-database with information
- microSD-card reader for expanded functions. The microSD card (accessories) will be recognized as a USB-drive.
- Generation of up to 512 screenshots of sonoand spectrograms as picture file for external use (accessories)
- Easy to handle, adjustments will be saved
- Excellent sensibility, due to high-quality ultrasonic-electret microphone in combination with a low-noise and complex preamplifier stage
- Noise suppression for fading out of background noise
- Big color display with adjustable brightness, overview of all possible adjustments and the last bat calls.
- Touch-screen (resistive) with touch-pen
- Clock and torch
- High quality of sound and volume, brilliant clear and differentiated transfer of bat sounds through integrated 1.5 W speaker
- Two level Boost-modus, for higher volume on guided tours
- Line-out and headphone output (combined, automatic detection)
- Firmware-update via USB interface and PC
- Auto shut-off for battery protection (adjustable from 1 min to ∞)
- Handy size and low weight: 104x57x15 mm (HxWxD), 125 g
| Product name: | SSF BAT3 |
| Ambient temperature | 0°C to 40°C |
| Battery | Li-Ion battery 1200mAh, 3.7V, 4.44Wh |
| Operating time | according to screen brightness ca. 3-6 hours continuous operation |
| Microphone | Ultrasonic Electret (FG-23629) |
| Frequency range | 15 kHz to 150 kHz |
| Processor | DSP-Processor 140 MHz |
| Signal processing | «High Speed-Low Noise»-operational amplifier separated for processor- and analogue section, low-pass 5 kHz, shielded analogue section for high signal-to-noise ratio |
| Display | TFT color screen with 240 x 320 pixels |
| Speaker | Rear speaker 1,5 W, additional front speaker |
| Jack plug | Earphone-/Lineout-outcome (automatic detection via impedance measuring) |
| USB | Battery-charge via USB-power supply, Firmware-Update via PC |
| MicroSD-card reader | MicroSD-card max. (FAT16 max. 4GB) |
| Weight | 125 g (incl. battery) |
| Dimensions | 104x57x15 mm (HxWxD) |
