Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 163
16.7.
Pseudobinary over SMS
Some bytes that are normally used as a part of Pseudobinary transmissions are
not allowed in SMS. When X-Link sends Pseudobinary data over SMS, those
bytes are replaced according to the following table:
Original Byte ASCII Original Byte Hex Replacement Byte ASCII
[
5B
1
\
5C
2
]
5D
3
^
5E
4
`
60
5
{
7B
6
|
7C
7
}
7D
8
~
7E
9
[
5B
1
16.8.
SHEF and SHEFFIX Data Format
SHEF is a format that is commonly used by Sutron's Satlink satellite transmitter.
It is an ASCII format that is easy to read and contains some self-descriptive
information.
The format of the transmission data is:
: <LABEL1> <OFFSET> #<INTERVAL> <DATA1> <DATA1> ...
<DATA1)>
: <LABEL2> <OFFSET> #<INTERVAL> <DATA2> <DATA2> ...
<DATA2>
...
: <LABEL(N)> <OFFSET> #<INTERVAL> <DATA(N)> <DATA(N)>
... <DATA(N)>
LABEL
This is the
Label
entered as a part of the setup for each
measurement. The label can be a SHEF two-character
parameter code such as HF for gauge height or PC for
cumulative precipitation or it can be any string you enter. Refer
to
http://noaasis.noaa.gov/DCS/htmfiles/schefcodes.html
for a
list of SHEF codes commonly used.
OFFSET
This number indicates how long ago the sensor reading was
made. The number is in minutes and it refers to the most recent
data. It is relative to transmission start.
INTERVAL
The interval indicates how often the measurement was made. It
corresponds to the setting
Meas Interval.
