Filtering; Esd Protection; Voltage Surge Protection; Regulation - Wavecom G2 User Manual

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6.6.2. Filtering

Filtering guarantees:
* EMI/RFI protection in input and output,
* signal smoothing.
Components retained are on the one hand Low Pass Filter (LC filter
architecture) and other one power inductor.

6.6.3. ESD protection

This function protects all input/output against the electrostatic surges.
Components which compose this function will be sized according to, the
power of the electrostatic surges apply on the connectors and the normal
functioning voltage scale. Components retained are TRANZIL diodes (TVS
diode : Transient Voltage Suppression diode).

6.6.4. Voltage surge protection

This function allows a protection against, the voltage surges, the reverse
polarity and electrostatics surges on the power supply line.

6.6.5. Regulation

Main regulation is made with a DC/DC converter in order to supply power
at all functions (STEP-DOWN CONVERTER is the name of montage).

6.6.6. RS232 Interface

This function adapts voltage levels between the WISMO module and
external world .

6.6.7. Amplification

This function is obtains with an audio power amplifier.

6.6.8. Other function

Red indicator. This function shows three operating modes:
the red indicator light up and light down fast in the transmission mode,
the red indicator light up and light down slowly in the idle mode,
the red indicator is light up continuous in the network search mode