User's Manual

HE920 Hardware User Guide
1vv0301014 Rev.9 – 2014-01-23
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 72 of 84
14. Application guide
14.1. Debug of the HE920 in production
To test and debug the mounting of HE920, we strongly recommend foreseeing test pads on
the host PCB, in order to check the connection between the HE920 itself and the application
and to test the performance of the module connecting it with an external computer. Depending
on the customer application, these pads include, but are not limited to the following signals:
 TXD
 RXD
 ON/OFF
 RESET
 GND
 VBATT
 TX_TRACE
 RX_TRACE
 PWRMON
 USB_VBUS
 USB_D+
 USB_D-