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Document Title: 24
User’s Manual for the GPS Orion-S/-HD Receiver
Document No. Issue 1.0
GTN-MAN-0110 June 22, 2003
DLR/GSOCNo part of this document shall be reproduced in any form or disclosed to third parties without prior authorization.
4.3.1.2 DR – Data Rate
The DR command provides the means for an individual configuration of receiver output mes-
sages. Sentences can be deactivated completely, polled once or issued at selected intervals.
CmdID Chars. Format Description
DR 11 Data Rate
1x <STX>
2xx Command Id (=DR)
2xx Message number
3x(xx) Output interval (-1..127)
2xx Checksum
1x <ETX>
Notes:
• The output interval specifies the time between consecutive messages of the re-
quested frame number in units of the time interval between navigation solutions (i.e.
1 s for 1 Hz version, 0.5 s for 2 Hz version)
• A value of “-1” for the output interval is used to deactivate a given message
• An output interval of “0” requests a one-time output (polling) of the given message
• Negative message numbers control the output of NMEA type message (-1=GPGGA,
etc.)
Examples:
<STX>DR400113<ETX> Issue the F40 navigation message at each update
<STX>DR43-10D<ETX> Deactivate the F43 channel status message
<STX>DR4802A<ETX> Poll the current configuration and status parameters (F48 msg.)
4.3.1.3 SM – Sentence Mode
The sentence mode command can be used to increase the field width of various Winmon
sentences (F00, F03, F04) to accommodate increased altitude, velocity and Doppler values
as encountered in typical space applications.
CmdID Chars. Format Description
SM 7 Sentence Mode
1x <STX>
2xx Command Id (=SM)
1x Sentence Mode (0=Winmon,1=Winmon-X)
2xx Checksum
1x <ETX>
Example:
<STX>SM02E<ETX> Select standard WinMon format for F00, F03, and F04
<STX>SM12F<ETX> Select extended WinMon format