Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 107
10.4.3.2.
Iridium Msg Interval
Please note that even with Listening disabled, Satlink will still check for messages periodically. A
message checks happens with every transmission. If scheduled transmissions are disabled,
message checking still happens every Msg Interval
.
The
message checking may not be disabled
without disabling the whole modem. Message checking will happen at least once a day.
Message checking happens even if recording is off.
Message checking will NOT happen if the transmission interval is faster than
Msg Interval
. This is
because
every transmission already includes a message check.
If a unit is setup with a
Scheduled Interval
of 1 hour, and a
Msg Interval
of 15 minutes:
00:15:00 - Message Check
00:30:00 - Message Check
00:45:00 - Message Check
01:00:00 - Transmission and Message Check- No additional message checking required
00:15:00 - Messages Check
With a
Scheduled Interval
of one hour and a
Msg Interval
of 24 hours, no additional message
checking occurs:
23:00:00 - Transmission and Message Check - No additional message checking required
00:00:00 - Transmission and Message Check - No additional message checking required
01:00:00 - Transmission and Message Check - No additional message checking required
The message check serves several purposes:
It prevents the customer from permanently severing the remote connection.
It allows stations to go into lower power mode than if
Listening
were enabled.
Please note that message checking is not scheduled to occur at a specific time. Message
checking is guaranteed to happen at least every Msg Interval. It is not scheduled to happen at
the top of the hour or at any other time. If the interval is set to an hour, it means that it may
take up to an hour for a message to be received. It does NOT mean that it will happen at the top
of every hour.
10.4.3.3.
Iridium Enable
The
Iridium Enable
setting may be used to completely disable the Iridium modem. If disabled,
Satlink will never power on the modem and no Iridium features will be available. This setting is
the equivalent of disconnecting the modem from the board. It may not be set remotely.
10.5.
Cell Setup
A cellular modem is an optional component for Satlink. A cellular modem is similar to equipment
found in a mobile phone. Satlink will use the cellular modem in order to connect to the internet
and deliver sensor data to a server. When equipped with a cell modem, Satlink can easily be
accessed remotely over the internet.
