Life Expiry Message; Sending Message Via Downlink - Kannad PROV-CARBON Manuel Utilisateur

USER MANUAL / MANUEL UTILISATEUR

6.7. Life Expiry Message

Life expiry mode occurs at the end of mission once all the programmed cycles are performed and the
corresponding data transmitted. This mode enables to obtain a regular position of the float for an eventual
recovery. Taking into account the significant cost of Iridium packets, the following has been decided:
• Technical packets will be transmitted by default every 6 hours. The transmission period at life expiry is
a technical parameter (PT30) expressed in hours.
• The Iridium communication phase at life expiry will include a reception phase enabling to process the
commands via downlink.
• If the float must be recovered, a command can be sent to update the transmission period and to obtain
a GPS position more frequently.

6.8. Sending message via downlink

Sending command via downlink is restricted to one PM! command by e-mail (max. 20 bytes length).
For e-mails configuration, refer to
PROV-CARBON
AN2005-07-V3.3.0 from NAL
PAGE : 25 / 70
DATE : 20/12/2007
INDEX : A
REF. : DOC07220
Research, section 11. ANNEX page 31.