ADLINK ND-6520 User Manual

Page 19

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NuDAM-6520

15

Functional Block Diagram

Power Regulator

& Filter

Power Input

+10V ~ +30V

+5V

GND

Isolation +5V

Isolation GND

DC to DC

Converter

TXD
RXD
RTS

GND

Receiver

RS-232

/ Driver

SW1

Opto-Isolation

Switching

Communication

Controller

Direction Control

Communication

TVS : Transient Voltage Suppresser
PTC : Positive Temperature Coefficient

RS-422/RS-485

Receiver/Driver

Data+

Data-

Rx+

Rx-

Tx+

Tx-

PTC

TVS

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