User's Manual

GE866-DUAL Hardware User Guide
1VV0301051 Rev. 2 – 2014-04-07
7
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 47 of 82
Mod. 0805 2011-07 Rev.2
An example of RS232 level adaptation circuitry could be done
using a MAXIM transceiver (MAX218).
In this case the chipset is capable to translate directly from
0/1.8V to the RS232 levels (Example done on 4 signals only).
The RS232 serial port lines are usually connected to a DB9
connector with the following layout: