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A TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)
136 Copernicus GPS Receiver
Command Packet 0x32 - Accurate Initial Position,
(Latitude, Longitude, Altitude)
This packet is identical in content to Packet 0x2B. This packet provides the GPS
receiver with an accurate initial position in latitude, longitude, and altitude
coordinates. However, the GPS receiver assumes the position provided in this packet
to be accurate. This packet is used for satellite acquisition aiding in systems where
another source of position is available. For acquisition aiding, the position provided
by the user to the GPS receiver in this packet should be accurate to a few kilometers.
For high-accuracy time transfer, position should be accurate to a few meters.
Command Packet 0x35 - Set Request I/O Options
This packet requests the current I/O options and allows the I/O options to be set. To
request the options settings without any changes, send the packet with no data bytes.
To change the options settings, include four data bytes with the values. The I/O
options, their default settings, and the byte values for all possible configurations are
shown below.
The Set/Request I/O options are stored in battery-backed memory. To store them in
non-volatile RAM (Flash), use the 0x8E-26 command. The GPS receiver returns
Packet 0x55.
These abbreviations are used in the following table:
• ALT Altitude
• ECEF Earth-centered, Earth-fixed
• XYZ Coordinates
• LLA Latitude, Longitude, Altitude
• HAE Height Above Ellipsoid
• WGS-84 Earth Model (ellipsoid)
• MSL Geoid Mean Sea Level
• UTC Coordinated Universal Time
Table A.20 Command Packet 0x32 Data Format
Byte Item Type Units
0-3 Latitude Single Radians, North
4-7 Longitude Single Radians, East
8-11 Altitude Single Meters