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APPENDIX A
– TELEMETRY FORMATS
This appendix contains descriptions for each of the telemetry formats supported by Xpert
Iridium.
ASCII Column Format
The ASCII Column format is an ASCII, human readable format placing sensor values in
columns, with each row containing data from earlier measurement intervals (newest data appears
in top row).
The following example contains the last 3 measured values for 4 different sensors. Note how “//”
is used to indicate “missing” data.
-4.422 35.00 136.16 37.00
-4.397 34.00 135.23 36.00
-4.324 33.00 134.88 //
The “right digits” property, defined by the ISBD data tag block, determines the number of right
digits that appear in the transmission.
The number of rows in the transmission is determined by the “Num Values” property in the
“Iridium Transmission Settings” dialog (select “Transmit” entry under the Iridium node on the
Setup tab).
Handar Format
The Handar format is an ASCII, human readable format where sensors are separated by
<CRLF>, sensor data is separated with a space, and missing data is reported as “M”.
For example:
010034380517419:21:30G42+0NN155E9200070"
1.3 1.3 1.3 1.3
2.4 2.4 2.4 2.4
M 12.2 12.2 12.2 12.2 12.3 12.3 12.3
NFDRS and NIFC Formats
The NFDRS (National Fire Danger Rating System) and NIFC (National Interagency Fire Center)
formats produce reports of human readable ASCII values using SHEF codes as labels for data.
The labels applied to measurement outputs are used to identify the data to include in the report.
The following table shows what labels are recognized be the NIFC and NFDRS formatter. An
“x” means the sensor label must appear in the setup for the formatter to succeed. The items with
no “x” are recognized and will be formatted, but are not required.
Sensor
Label
NIFC
NFDRS
Rainfall
PCH
x
x
