Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 156
16.3.1.1.
Example: Append xx
Logger sends command: !TX1 EXTBUF APPEND 16<CR><LF>
Satlink replies: <ETX>
Logger sends 16 bytes of data: DATA TO TRANSMIT
Link replies: OK 16 bytes added<ETX>
16.3.1.2.
Example: Append
Logger sends command: !TX1 EXTBUF APPEND<CR><LF>
Satlink replies: <ETX>
Logger sends data: DATA TO TRANSMIT<ETX>
Satlink replies: OK 16 bytes added<ETX>
16.3.1.3.
Example: Insert
>TX1 EXTBUF INSERT
Send transmission data. Finish with ETX (Ctrl-C).
PLEASE TRANSMIT THIS DATA
OK 25 bytes added
>TX1 EXTBUF SHOW
PLEASE TRANSMIT THIS DATA
>TX1 EXTBUF BYTES
25
>TX1 EXTBUF SIZE
16384
To clear the data in the buffer (without adding any new data), issue TX1 EXTBUF INSERT 0
16.3.2.
EXTBUF Errors
If something goes wrong, Satlink will reply with
ERROR
Syntax error. Either the telemetry indicator (TX1) was missing, or the command was
incomplete.
ERROR TIMEOUT
More than 30 seconds passed since the last data byte was inserted in the buffer. Data
inserted prior to the timeout will get transmitted.
ERROR BUFFER FULL
More data was inserted than could fit. Data inserted prior to the overflow will get
transmitted.
16.4.
Random Transmissions
TX2 Random in the SL3-XMTR-1 does not need to be enabled for the unit to transmit data on the
random channel since it is expected to be controlled by the connected logger and the TX2
TXNOW command.
The random transmission still needs to be setup with the correct satellite type, channel, ID,
power output, and other desired settings.
The logger controls the sending of data and the specific random transmissions, Random Normal,
Random Burst and Random alarm With the TX2 TXNOW command.
