Q2686 Wavecom, Q2686 Datasheet - Page 81

• Manufacturer Part Number: Q2686
• Description: Wireless CPU
• Manufacturer: Wavecom

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6.1.4 Antenna
WARNING:
Wavecom strongly recommends to work with an antenna manufacturer either
to develop an antenna adapted to the application or to adapt an existing
solution to the application.
Both the mechanical and electrical antenna adaptation is one of the key issues
in the design of the GSM terminal.
6.2 Mechanical Integration
Attention should be paid to:
6.3 Operating System Upgrade
The Q2686 Wireless CPU
easily be upgraded.
IMPORTANT:
In order to follow regular changes in the GPRS standard and to offer a state-of-
the-art
designed around a Wireless CPU
Operating System upgrades on the Wireless CPU
protocol. Therefore, the application shall either allow a direct access to the
Wireless CPU
mechanism allowing the Wireless CPU
via X-modem.
The Operating System file can be downloaded to the modem using the X-
modem protocol. The AT+WDWL command allows the download process to
be launched (see the description in the AT Command User Guide [7]).
The serial signals required to proceed with X-modem downloading are:
Rx, Tx, RTS, CTS and GND.
The Operating System file can also be downloaded to the modem using the
DOTA (download over the air) feature. This feature is available with the Open
AT
1.1.1.
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WM_PRJ_Q2686_PTS_001-007
®
•
•
interface. For more details, please, refer to the Open AT
Antenna cable integration (bending, length, position, etc)
Leads of the Wireless CPU
Operating
®
serial link through an external connector or implement any
confidential ©
System,
®
Operating System is stored in flash memory and can
Wavecom
®
®
to be soldered to the Ground plane
(or Wireless CPU
®
Operating System to be downloaded
recommends
®
®
via the standard X-modem
based product) allow easy
Q2686 Wireless CPU
that
Design Guidelines
®
the
documentation
application
March 6, 2007
Page: 80 / 87
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