Voice Band Inverter

3

MX014

© 1997 MX•COM, INC.

www.mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054

Doc. # 20480013.006

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1. Block Diagram

6dB/Octave

Pre-emphasis

10dB Gain

TX Audio Feedback

TX Audio In

RX Audio In

RX Audio Feedback

BIAS

RX Path

Rx Path

Bandpass

Filter

300-3033 Hz

Bandpass

Filter

300-3033 Hz

Filsav 1

Filsav 1

Filsav 2

Carrier

6dB/Octave

De-emphasis

Path Invert

TX

TX

RX Path

TX Audio Out

RX Audio Out

BIAS

CLK Generator

Clock

Clock

CLK

3333 Hz

V

BIAS

V

3333 Hz

PTT

PTT

RX Audio Enable

RX Audio Enable

PTL

PTL

Privacy Enable

Carrier

Filsav 1

Filsav 2

RX Path

EMPSAV

TX

Path Invert

LOGIC

DD

SS

Figure 1: Device Block Diagram