Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 141
Denotes Pseudobinary C format
Delimiter for next measurement
M1 day of the year of the most recent reading. For 2013, it is
June 14th.
M1 minutes into the day of the most recent reading: 9:21AM
M1 measurement interval in minutes.
M1 most recent sensor reading made at 09:21AM
M1 sensor reading made at 09:20AM
M1 oldest sensor reading made at 09:19AM
Delimiter for next measurement
M2 day of the year of the most recent reading.
M2 minutes into the day of the most recent reading.
M2 measurement interval in minutes.
Delimiter for end of measurement data
Battery voltage (11*0.234+10.6)
15.3. Pseudobinary D Data Format
This is another compact data format. It differs from Pseudobinary B in that it has a timestamp at
the start of the message. The timestamp indicates when the transmission should have taken
place and helps decode when the data was collected. Pseudobinary D is 4 bytes larger than
format B.
The timestamp is similar to the one in Pseudobinary C. Pseudobinary D is smaller than
Pseudobinary C and it lacks detailed timestamps that would allow one to completely reconstruct
the time the data was collected from the message itself. To correctly use Pseudobinary D, the
decoder needs to know the measurement setup used.
The benefit of using Pseudobinary D is being able to correctly decode data regardless of when it
was sent or received. This allows stations to re-transmit old data and have it correctly
interpreted by the decoder while keeping the message size at a minimum.
BLOCK-IDENTIFIER is always sent as D to indicate that this is the
Pseudobinary D format.
GROUP-ID can be 1 to indicate a scheduled transmission, 2
meaning an alarm transmission, 3 indicating a forced
transmission, and 4 indicating a retransmission.
This 2 byte encoded 6 bit binary encoded (see below) number
represents the Julian day of the year. The day tells when the
transmission was originally scheduled to take place.
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