Connecting a set of headphones will turn off the internal loudspeaker. For both output sockets, the
heterodyne signal is available on the left channel and the frequency division signal on the right,
regardless of the setting of the HET/DIV switch (see the figure below).
At the TAPE socket the transformed, audible signals (HET and DIV) are available (see the figure below).
If the input impedance of the tape recorder is very low (lower than 5 kohms), the signal levels in the
detector will be decreased, resulting in a weaker output to the loudspeaker or headphones. Any tape
recorder connected to the TAPE output must be battery powered (not connected to the mains).
Technical specifications
Type: Heterodyne and
frequency division (÷10)
Frequency range: 10 - 120 kHz (min.)
Display accuracy: +/- 0.15 kHz
Bandwidth (het.): 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9V)
Quiescent current: 23 mA typ. including
LCD backlight
Size: 119 x 60 x 25 mm
Weight: 160 g. including battery
Outputs: 2 x 3.5 mm jacks for
headphones and tape
recorder (350 mV
rms
/3.3 kohm).
Comment switch: Yes
Using the detector in intense electromagnetic
fields may cause interference and/or temporary
signal loss.
ULTRASOUND DETECTOR D 230
Pettersson
Elektronik AB
www.batsound.com
Tel: +46 18 303880
Fax: +46 18 303840
Pettersson
Elektronik AB
A - Original signal B - Frequency division output
HET. DIV.
