Connection Of The Foot Pedal And The Stethoscope Coupler; General Operating Mode - BRUEL & KJAER 4914 Instruction Manual

Fig. 3.8. The Light-probe Mirror-holder and three larynx mirrors
3.5. CONNECTION OF THE FOOT PEDAL AND THE STETHOSCOPE COUPLER
The Pedal is connected by inserting the screw-lock 6-pin DIN-plug of the pedal cable
into the PEDAL Socket on the front panel of the Type 4914. The screw-lock is then
tightened to hold the DIN-plug in position.
The Stethoscope Coupler is connected by pushing the free end of the rubber tube firmly
over the black MICROPHONE Connector on the front panel of the Type 4914.
3.6. GENERAL OPERATING MODE
12
Carry out the preliminary checks and adjustments necessary (see section 3.1 ), connect
the Light Cable, Light-Probe, Stethoscope Coupler and Pedal (see sections 3.2 to 3.5).
1. Set the "POWER" switch to "I" (On) and the Display will show that the instrument is
ready for measurement. See Fig. 3.9.
Voice Frequency, Hz Trigger Phase,
0
Fig. 3.9.
2. Hold the Stethoscope Coupler lightly against the patients neck in the vicinity of the
larynx. It is often preferrable that the patient himself holds the Coupler during the
consultation since this may be more comfortable for him.
Any sound produced in the larynx is then picked up by the Stethoscope Coupler and
fed to the Microphone Input.