User's Manual

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Note d’étude / Technical document : URD1– OTL 5665.1– 002 / 70 884 Edition 03
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3.2.2.1 Recommended characteristics for the microphone
Item to be inspected Acceptance criterion
Sensitivity - 40 dB SPL +/-3 dB (0 dB = 1 V/Pa @ 1kHz)
Frequency response Limits (relatives values)
Freq. (Hz) Lower limit Upper limit
100 -1 1
200 -1 1
300 -1 1
1000 0 0
2000 -1 1
3000 -1.5 1.5
3400 -2 2
4000 -2 2
Current consumption 1 mA (maximum)
Operating voltage DC 1 to 3 V (minimum)
S / N ratio 55 dB minimum (A-Curve at 1 kHz, 1 Pa)
Directivity Omni-directional
Maximum input sound pressure level 100 dB SPL (1 kHz)
Maximum distortion 1%
Radio frequency protection Over 800 -1200 MHz and 1700 -2000 MHz, S/N ratio 50
dB minimum (signal 1 kHz, 1 Pa)
3.2.2.2 Recommended characteristics for the speaker
Item to be inspected Acceptance criterion
Input power: rated / max 0.1W (Rate)
Audio chain impedance 32 ohm +/- 10% at 1V 1KHz
Frequency Range 300 Hz ～ 4.0 KHz
Sensitivity (S.P.L) >105 dB at 1KHz with IEC318 coupler,
Distortion 5% max at 1K Hz, nominal input power
3.3 PWM
3.3.1 PWM outputs
The HiloNC module can manage two PWM outputs.
They can be configured with appropriate AT command (for more details refer to AT command set for Sagem
HiloNC module specification).
User application can set for each output:
- Frequency between : 25.6KHz and 1083.3KHz
- Duty range from: 0 to 100%