Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 93
If Tx Enable is disabled but Listening is on, X-Link will be able to receive
messages; GPRSLink, HSPALink, and CDMALink will be able to receive incoming
connections too.
Setting up your GPRSLink with Tx Enable disabled and Listening enabled is a valid
setup in which software like Sutron WIN may periodically get data from the
station.
7.2.1.2. Tx Time and Tx Interval
These variable controls when and how frequently scheduled transmissions are to
be made. Tx Enable must be on for these settings to be relevant.
The interval controls how often transmissions are made, and the time controls
when the transmission process is started.
Example: Time 00:00:00 interval 00:10:00
00:10:00 transmission process starts
00:20:00 transmission process starts
00:30:00 transmission process starts
and every ten minutes afterwards…
Example: Time 00:00:30 interval 00:05:00
00:00:30 transmission process starts
00:05:30 transmission process starts
00:10:30 transmission process starts
and every five minutes afterwards…
The transmission is not instantaneous. At the designated time, the
transmission process will start. That process includes formatting the data
content, powering on the modem, waiting for the modem to acquire a good
signal, etc.
Make sure to have the transmission scheduled a short while after the
measurements are completed. If the measurements happen at the 15 minute
mark, set the transmission time to 16 minutes to ensure the measurements are
completed before the transmission process starts.
For IRIDIUMLink and other X-Links set up to transmit messages, in order to
receive the freshest data, the Tx Interval should be set such that only one
transmission is sent at one time. Ideally, each message will be full. See the
section Optimizing Data Usage for more details.
7.2.1.3. Tx Format
The format controls what the data in the transmission looks like. Options are
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