User Guide

CCS Technical Documentation System Module and User Interface

NEM-2

Microphone

The microphone is embedded into the B-cover. IT features a sensitivity of 42+/-2dB

(0dB=1V/Pa at 1Khz). Its impedance is 1.4kohm.

Polarity as shown:

Figure 13: Microphone Polarity

Ringing tone speaker

Alerting tones, as MP3, AAC, MIDI or conventional sinusoidal files are made audible by

an integrated loudspeaker. The acoustic pressure level requirement for these ringing

tones is 105dB(A) at a distance of 5cm.

The ringing tone speaker NMP code 5140253, impedance 8 ohm, sensitivity 69B+/-2dB

SPL @ 0.1W, 1m, averaged over rated frequency range.

Polarity as shown:

Figure 14: Ringing tone speaker Polarity (the view on the spring contacts)

The ringing tone speaker is integrated into the B-cover. An adhesive ring acoustically

seals the lid, which closes the box. The lid is supported with mechanical reinforcements

to stop resonance of the housing. Two cylindrical contact pins, which are moveable

inside the lid, contact the electrical signal through from PWB to the Speaker.

Vibra

The Vibra code is 6800053.

Pin 1 (+)

Pin 2 (-)

side view