Lassen SQ, Reference Manual

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3 Software Interface
3 8 Lassen SQ GPS Receiver
3.3.2
TSIP Data Output Modes
TSIP is the default protocol for the Lassen SQ GPS receiver. This
binary language offers users a wide variety of commands and reports.
TSIP enables the Lassen SQ GPS receiver to operate in two data
output modes, both available during operation. In Query Mode, packet
data is returned in response to input query packets. In Automatic
Mode, a selected group of data packets is output continuously at two
fixed rates – every second and every five seconds. The format and
ensemble of the automatic output packets is configured using packets
0x35, 0x70, and 0x8E-20 (see Appendi xA for packet details). Packet
settings are stored in BBRAM. They can also be saved in non-volatile
memory (Flash) using command packet 0x8E-26. See Appendix A for
additional information on Flash storage for custom operation.
3.3.3
Automatic TSIP Output Options and Defaults
Default 0x35 setting (byte 0, 1, 2, 3 = 2, 2, 0, 0):
• Position and velocity data precision: 4 byte floating point
• Position output option and format (byte 0 setting):
– Latitude – radian
– Longitude – radian
– Altitude – meters (WGS-84)
• No super-packet output (byte 0 setting)
• Velocity output option and format (byte 1 setting):
– East Velocity – meters/sec.; + for East
– North Velocity – meters/sec.; + for North
– Up Velocity – meters/sec.; + for Up