Delivery of 4 professional ultrasonic bat detectors

Description

The subject of the order is the supply of 4 units of professional ultrasonic bat detectors, which have to comply with the following minimum parameters: Ultrasound detector with three ultrasound conversion systems (heterodyne, frequency division and time expansion) Frequency range: 5 kHz - 235 kHz (frequency division and heterodyne) Function for direct recording of ultrasonic signals (storage medium: CF card) ADC with 16 bits resolution and adaptive anti-aliasing filter Selectable sampling rates: 32, 44.1, 48, 96, 100, 192, 200, 250, 300, 384, 400, 500, 750, 768 kHz Low noise capacitor microphone, detachable and connectable via cable HF/MEM output - 3.5 mm stereo jack, load impedance 500 ohms or greater, ca 600 mVrms at 0 dB Power supply from internal (5 x AA) or external (7-10 V) batteries Switchable heterodyne frequency lock (using one of the keys of the keypad) - locks the heterodyne frequency at a selected value... Lot 1: The subject of the order is the supply of 4 units of professional ultrasonic bat detectors, which have to comply with the following minimum parameters: Ultrasound detector with three ultrasound conversion systems (heterodyne, frequency division and time expansion) Frequency range: 5 kHz - 235 kHz (frequency division and heterodyne) Function for direct recording of ultrasonic signals (storage medium: CF card) ADC with 16 bits resolution and adaptive anti-aliasing filter Selectable sampling rates: 32, 44.1, 48, 96, 100, 192, 200, 250, 300, 384, 400, 500, 750, 768 kHz Low noise capacitor microphone, detachable and connectable via cable HF/MEM output - 3.5 mm stereo jack, load impedance 500 ohms or greater, ca 600 mVrms at 0 dB Power supply from internal (5 x AA) or external (7-10 V) batteries Switchable heterodyne frequency lock (using one of the keys of the keypad) - locks the heterodyne frequency at a selected value Tripod mount integrated in detector housing Presence of so called "quick button" for switching on/off the display backlight (by means of one of the keyboard buttons)