Sutron Xpert2, Operation And Maintenance Manual

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Bringing the Benefits of Real-Time Data Collection to the World
Sutron Corporation, Tel: 703-406-2800, http://www.sutron.com
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C3+ADGTU?///+BDGTU?@UI+CDGTU??~v///.L
Group
3 format C
Sequence A 1
Julian Day DG 263
Time TU 21:41
Interval ? 00:-1
Data: /// missing
Sequence B 2
Julian Day DG 263
Time TU 21:41
Interval ? 00:-1
Data: @UI 1353
Sequence C 3
Julian Day DG 263
Time TU 21:41
Interval ? 00:-1
Data: ?~v -74
/// missing
Batt V L 13.4
Pseudobinary-D 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.
Name Bytes Description
Block ID 1 BLOCK-IDENTIFIER is always sent as "D" to
indicate that this is the pseudobinary D format.
Group ID 1 GROUP-ID can be "1" to indicate a scheduled
transmission, “2” meaning an alarm transmission,
and “3” indicating a forced transmission, or “4”
indicating a retransmission
Day 2 This 2 byte encoded 6 bit binary encoded number
represents the Julian day of the year. The day tells
when the transmission was originally scheduled to
take place
Time 2 This 2 byte encoded 6 bit binary encoded number is
a number of minutes into the day. It tells when the
transmission was originally scheduled to take place
Measurement 3 for each Sensor data encoded 6 bit binary. The value