Technical specifications

D 100

Type: Heterodyne
Frequency range: 10 - 120 kHz (min.)
Bandwidth: 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9V)
Quiescent current: 16 mA typ.
Size: 113 x 71 x 33 mm (113 x 71 x 63 mm including knobs)
Weight: 220 g. including battery
Outputs: 2 x 3.5 mm jacks for headphones and tape recorder.

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D 200

Type: Heterodyne
Frequency range: 10 - 120 kHz (min.)
Display accuracy: +/- 0.15 kHz
Bandwidth: 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9V)
Quiescent current: 17 mA typ. including LCD backlight
Size: 119 x 60 x 25 mm including knobs
Weight: 150 g. including battery
Outputs: 2 x 3.5 mm jacks for headphones and tape recorder.

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D 230

Type: Heterodyne and retained amplitude frequency division (divide-by-ten)
Frequency range: 10 - 120 kHz (min.)
Display accuracy: +/- 0.15 kHz
Bandwidth: 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9V)
Quiescent current: 23 mA typ. including LCD backlight
Comment switch: Yes
Size: 119 x 60 x 25 mm including knobs
Weight: 160 g. including battery
Outputs: 2 x 3.5 mm jacks for headphones and tape recorder.

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D 240X

Type: Heterodyne and time expansion (x10 or x20 - selectable via switch)
Frequency range: 10 - 120 kHz (min.)
Display accuracy: +/- 0.15 kHz
Bandwidth: 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9V)
Quiescent current: 30 mA typ. (replay) including LCD backlight
Comment switch: Yes
Memory size: 1M x 8
Sampling frequency: 307 kHz
Resolution: 8 bits
Storage time: 3.4, 1.7 or 0.1 sec. (selectable via switch)
Trigger modes: Manual, level - broadband, level - narrowband
Pretrigger: 50% of the selected storage time
Miscellaneous: Overload indicator, adjustable input gain, replay of signal in memory through heterodyne system

Size: 119 x 60 x 25 mm including knobs
Weight: 170 g. including battery
Outputs: 2 x 3.5 mm jacks for headphones and tape recorder.

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D 500X

Type: Direct, high-speed recording

Frequency range: 15 – 190 kHz (500 kHz sampling rate, high-pass filter enabled)

<5 – 190 kHz (500 kHz sampling rate, high-pass filter disabled)

Recording system

ADC resolution: 16 bits

Anti-aliasing filter: Yes, 8^th order, 190 kHz cut-off frequency

Sampling rates: 44.1, 300, 500 kHz (optimized for 500 kHz)

Recording length: 0.3, 0.5, 1, 2, 3, 5, 10, 20 sec or manual recording

Recording medium: CF card, 4 slots

Built-in microphone: Electret

Connections: External microphone, external trigger, external DC supply

Timer: Four on/off periods per day

Batteries: 4 x AA size, Alkaline or NiMH recommended

External DC supply: 4.5-8 V, typically ca. 200 mA (average, when recording), depends on CF card type and number

Size: 165 x 170 x 53 mm, excl. connectors etc.

Weight: 1.2 kg incl. batteries and front panel cover

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D 1000X

Type: Heterodyne, frequency division (x10), time expansion and direct recording

Frequency range: 5 – 235 kHz (frequency division and heterodyne)

5 kHz – 0.4 x sampling frequency (time expansion and direct recording)

Activating the high-pass filter results in a lower frequency limit of about 20 kHz.

Het. freq. resolution: 0.1 kHz (f<17.8 kHz)

0.2 kHz (18<f<43 kHz)

0.5 kHz (43.5 kHz<f<107 kHz)

1 kHz (108<f<235 kHz)

Headphones output: 3.5 mm stereo jack, load impedance 32 ohms or greater

HF/MEM output: 3.5 mm stereo jack, load impedance 500 ohms or greater, ca 600 mV_rms at 0 dB

Recording/playback system

ADC resolution: 16 bits

Anti-aliasing filter: Yes, adaptive

Sampling rates: 32, 44.1, 48, 96, 100, 192, 200, 250, 300, 384, 400, 500, 750, 768 kHz

Time exp. factors: 1, 2, 3, 5, 10, 20, 30

DAC resolution: 12 bits

GPS connection requirements:

Interface: RS-232

Protocol: NMEA 0183

Decoded sentences: GPGLL, GPGGA and GPRMC

Baud rate: 4800 Baud

Batteries: 5 x AA size, Alkaline or NiMH recommended

External DC supply: 7-10 V, 250 mA (average), 700 mA (peak)

Size: 170 x 80 x 35 mm, excl. microphone

Weight: 600 g incl. batteries

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