Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 137
Pseudobinary B for Scheduled and Alarm Txs
transmitted will be value * 10^RightDigits. The string /// will be sent if the
data was never measured or was erased.
The number of values sent for each measurement is set separately for each
measurement in the Scheduled Transmissions, Num values to Tx field. Note
that this is different from the 8210 where the num values to Tx was the same
for each sensor. As a result, Satlink Logger sends all the required values for
one sensor (most recent first) before proceeding to the next measurement. In
the 8210, values were interleaved.
This is data given to Satlink Logger by an external device. This data is
untouched by Satlink Logger. It gets transmitted in the same way it was
received.
Data will only appear here if another logger gives Satlink transmission data. It
is not usual to have both Measurement Data and External Data.
This is an optional 1 byte binary encoded number representing the battery
voltage of Satlink under load during the last environmental satellite
transmission.
This value is appended only if the correct Append Option is selected.
If the battery reading is zero, then that is the first transmission since bootup.
The range of the Pseudobinary number is -32 to +31 and can be converted to
volts by multiplying by 0.234 and adding 10.6 allowing a range of 3.1 to 18.1
volts.
This 8 byte value is appended only if the correct Append Option is selected.
LAT/LONG can be decoded into D:M:S format by converting the binary values
to decimal and applying the following formula:
Degrees latitude = 64 * ( 1st-byte AND 63 ) + ( 2nd-Byte AND 63) − 90
Minutes latitude = 3rd-byte AND 63
Seconds latitude = 4th-byte AND 63
Degrees longitude = 64 * ( 5th -byte AND 63) + ( 6th -Byte AND 63) − 180
Minutes longitude = 7th-byte AND 63
Seconds longitude = 8th-byte AND 63
For example BAAODAXe would be decoded as Lat 39o 1' 15" Long 77o 24' 37"
Fractional seconds are scientifically rounded.
The hemisphere is NOT encoded. One cannot tell whether the station is North
or South, East or West via pseudobinary encoding.
The Lat/Long information will be user readable. For example,
N39O1'18.48"W77O24'36.91" means a latitude of North 39 degrees, 1
minute, 18.48 seconds and longitude of W 77 degrees, 24 minutes, 36.91
seconds.
This is an optional 4 byte field that holds the previous transmission's forward
and reflected power.
Two values are transmitted: forward and reflected power.
Each value is encoded as a 2 byte binary encoded signed number. The number
of right digits is 1 yielding range of 0 - +204.8 watts.
The initial transmission will have a value of -1.0 as the power (as there is no
power reading prior to the first transmission).
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