Trimble Outdoors 58052-00 Benutzerhandbuch

A TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)

1 3 4 Copernicus GPS Receiver

Command Packet 0x24 - Request GPS Receiver Position Fix Mode

This packet requests current position fix mode of the GPS receiver. This packet
contains no data. The GPS receiver returns Packet

6D.

Command Packet 0x25 - Initiate Soft Reset & Self Test

This packet commands the GPS receiver to perform a software reset. The GPS
receiver performs a self-test as part of the reset operation. This packet contains no
data. Following completion of the reset, the receiver will output the start-up messages
(see

Table A.4

). The GPS receiver sends Packet

45 only on power-up and reset (or

on request); thus if Packet

45 appears unrequested, then either the GPS receiver

power was cycled or the GPS receiver was reset.

Command Packet 0x26 - Request Health

This packet requests health and status information from the GPS receiver. This packet
contains no data. The GPS receiver returns Packet

46 and

4B.

Command Packet 0x27 - Request Signal Levels

This packet requests signal levels for all satellites currently being tracked. This packet
contains no data. The GPS receiver returns
Packet

47.

Command Packet 0x2B - Initial Position (Latitude, Longitude, Altitude)

This packet provides the GPS receiver with an approximate initial position in latitude
and longitude coordinates (WGS-84). This packet is useful if the user has moved
more than about 1,000 miles since the previous fix. (Note that the GPS receiver can
initialize itself without any data from the user; this packet merely reduces the time
required for initialization.) This packet is ignored if the receiver is already
calculating positions. The data format is shown in the table below.

Note – To initialize with ECEF position, use Command Packet 0x23.

Table A.17

Command Packet 0x2B

Byte

Item

Type

Units

0-3 Latitude

Single

Radians, north

4-7

Longitude

Single

Radians, east

8-11

Altitude

Single

Meters