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A TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)
148 Copernicus GPS Receiver
Notes – See the associated superpacket output, described later in this appendix.
Packet 8E must be used to specify which superpacket is to be output.
Automatic output of 0x5A raw measurement messages is supported in the Lassen IQ
GPS Receiver for backwards compatibility with older TSIP applications.
Report Packet 0x56 - Velocity Fix, East-North-Up (ENU)
If East-North-Up (ENU) coordinates have been selected for the I/O “velocity” option
(see Packet 0x35), the receiver sends this packet under the following conditions:
• Each time that a fix is computed
• In response to Packet 0x37 (last known fix)
The data format is shown below.
The time-of-fix is in GPS or UTC time as selected by the I/O “timing” option.
7 Reserved
Auxiliary/Pseudo Range Measurements
3 0 Raw Measurement Bit 0
1
Raw measurements off
Raw measurements on
1 Reserved
2 Reserved
3 Signal Level Unit Bit 0
1
Output AMUs
Output dB Hz
4 Reserved
5 Sig levels for SVs Bit 0
1
Signal levels Off
Signal levels On
6-7 Reserved
Table A.37 Report Packet 0x56 Data Formats
Byte Item Type Units
0-3 East Velocity Single m/s; + for east, - for west
4-7 North Velocity Single m/s; + for north, - for south
8-11 Up Velocity Single m/s; + for up, - for down
12-15 Clock Bias Rate Single m/s
16-19 Time-of-Fix Single seconds (GPS or UTC)
Table A.36 Command Packets 0x55 and 0x35 Data Descriptions (continued)
Byte Bit Item Type Value Definition