Gemalto M2M GmbH EHS8 Manuale Utente
Cinterion
®
EHS8 Hardware Interface Overview
Page 24 of 43
EHS8_HIO_v02.770
2014-08-11
Confidential / Preliminary
potential interferers may be minimized by placing small capacitors (47pF) at suspected lines
(e.g. RXD0, RXT0, VDDLP, and ON).
While developing SMT applications it is strongly recommended to provide test points
for certain signals, i.e., lines to and from the module - for debug and/or test purposes.
The SMT application should allow for an easy access to these signals. For details on
how to implement test points see
The SMT application should allow for an easy access to these signals. For details on
how to implement test points see
[3]
.
The EMC measures are best practice recommendations. In fact, an adequate EMC strategy
for an individual application is very much determined by the overall layout and, especially, the
position of components. For example, mounting the internal acoustic transducers directly on
the PCB eliminates the need to use the ferrite beads shown in the sample schematic.
position of components. For example, mounting the internal acoustic transducers directly on
the PCB eliminates the need to use the ferrite beads shown in the sample schematic.
Note: EHS8 is not intended for use with cables longer than 3m.
Disclaimer
No warranty, either stated or implied, is provided on the sample schematic diagram shown in
No warranty, either stated or implied, is provided on the sample schematic diagram shown in
Figure 6
and the information detailed in this section. As functionality and compliance with
national regulations depend to a great amount on the used electronic components and the
individual application layout manufacturers are required to ensure adequate design and
operating safeguards for their products using EHS8 modules.
individual application layout manufacturers are required to ensure adequate design and
operating safeguards for their products using EHS8 modules.
2.4 Sample Application