Electronic Stethoscope

Electronic Stethoscope Specification


Electronic Stethoscope ES12 for locating sound sources.

 





 





Technical DATA MI10

Acoustic mode of operation:

 

Pressure gradient receiver

Directional characteristic:

 

Cardioids

Backward noise elimination:

 

20 dB

Frequency range:

 

see Diagram

Open circuit sensitivity at 1000Hz und 5V

 

7,2 mV/PA ±3 dB

Impedance:

 

1000 Ω ±40 %

Distortion at 28 Pa, (123dB) SPL:

 

< 3 %

Operating supply voltage:

 

0,8 – 15 V

Current consumption:

 

< 0,2 mA

Storage:

 

min. −25 °C, max. +60 °C

Operation mode:

 

min. −20 °C, max. +55 °C

Humidity range:

 

20°C / 99%, 60°C / 95%

Swan neck thread:

 

M10x1

Length:

 

455 mm

Weight:

 

approx. 130 g

Cable:

 

2 m, Ø 2,7 mm

Technical DATA AV14

Piezoelectric accelerometer input:

 

Microdot

Microphone input:

 

LEMO Serie 00

Frequency response hp-amp.:

 

−3 dB between 30 Hz – 20 kHz

Max. Output voltage hp-amp.:

 

4 Vss*) an 150 Ω

Distortion factor:

 

< 1 % at 1 kHz and 4 Vss

Output socket headphone:

 

3.5 mm stereo jack

Output socket measuring ampl.:

 

BNC (on rear panel)

Max. output voltage:

 

5 Vss

Output Impedance:

 

50 Ω in series with 10 μF

Max. Impedance:

 

> 10 , < 10 nF

Frequency response:

 

−3 dB between 1 Hz – 30 kHz

Microphone power supply voltage:

 

5,6 V via 8,2

Sensitivity (Piezoelectric accelerometer):

 

1 mV/pC or 10 mV/pC, ±2 %

LED "Supply Voltage":

 

green

LED "Charging" (rear):

 

red

Supply rechargeable battery:

 

9 V

Supply extern:

 

9–15 V DC

Battery Charge:

 

12–14 V, approx. 14 h

Current Consumption:

 

5 to 15 mA

Battery operating time:

 

approx. 10–30 h

Operating temperature

range:

 

+/- 0°C to +50°C

Cabinet material:

 

Aluminium

Dimensions (W × H × D):

 

55 × 25 × 100 mm

Weight with batteries:

 

approx. 250 g

Safety standards:

 

IEC61010, EMC EN55103-1, EN55103-2

Technical DATA KH10

Transducer type:

Dynamic

Operating principle:

Closed

Nominal frequency response:

5 - 30.000 Hz

Nominal impedance:

80 Ω per cartridge

Nominal SPL:

105 dB

Nominal T.H.D.:

< 0,2%

Power handling capacity:

100 mW

Sound coupling to ear:

Circumaural

Ambient noise isolation:

≥ 35 dBA

Nominal headband pressure:

approx. 6,5 N

Weight (without cable):

300 g

Length and type of cable:

33 m / straight cable

Connection:

Gold plated stereo jack plug (3.5 mm) and 1/4" adapter (6.35 mm)