GL865-DUAL V3 Hardware User Guide
1vv0301018 Rev.5 – 2013-08-05
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 42 of 76
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: