3B Scientific Microphone User Manual

3B SCIENTIFIC® PHYSICS

Microphone U11367

Instruction sheet

11/08 Hh

1. Safety instructions

• Do not expose the microphone to sound levels

in excess of 110 dB!

2. Scope of delivery

1 Microphone box
1 Table microphone
1 Mini DIN connecting lead 8-pin, 60 cm length

3. Description

The microphone is suitable for measurements of
relative sound pressure, for examination of sound
waves and sound frequencies, e.g. those of voices
and musical instruments (fundamental tone and
overtones), for determination of sound velocity in
air, as well as for the examination of beats and the
Doppler effect.

It consists of a microphone box with amplifier and
an electret table microphone on a base, with de­tachable gooseneck stand.

4. Technical data

Table microphone with 3.5 mm stereo jack plug
Cable length: 1.8 m

Impedance: 1.4 kΩ
Frequency range: 30 Hz – 16 kHz
Type: Omni-directional

5. Operation

• Connect the microphone to the microphone

box and connect the latter to one of the two
analog inputs A or B of the 3B NETlog
the mini DIN lead

• Select “Vdc” as the operating mode for the

selected input.

TM

unit via

1

6. Sample experiment

Measuring the sound wave from a tuning fork

Equipment needed:
1 3B NETlog

TM

module U11300
1 Microphone U11367
1 Tuning fork 440 Hz, on

resonance box U10121

Fig. 1: Measuring the sound wave of a tuning fork

• Mount the 440 Hz tuning fork on the resonance

box and position the microphone in front of
the resonance box’s sound hole.

• Select an analog input on the 3B NETlog

module and activate the tuning fork experi­ment (template) in the 3B NETlab

TM

software.

TM

This provides all the necessary output settings.

• Conduct and analyse the experiment.

Fig. 2: Amplitude of sound wave from a tuning fork as a
function of time

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com

Subject to technical amendments

© Copyright 2008 3B Scientific GmbH