User and I/O Interface ....................................................109
Physical and Electrical Characteristics .............................109
Environmental Characteristics .........................................110
1PPS Output.....................................................................112
Event Marker Input ............................................................113
Resetting the Receiver .......................................................113
Upgrading the Receiver Firmware ........................................114
SP Loader Software Utility..................................................114
Installing SP Loader .......................................................114
Getting Started With SP Loader .......................................114
Upgrading Receiver Firmware ..........................................115
Installing a Firmware Option............................................116
Activating a CenterPoint RTX Subscription........................117
Reading Receiver Warranty Expiration Date.......................117
SP File Manager Software Utility ........................................118
Installing SP File Manager ..............................................118
Connecting SP90m to your Computer...............................118
Getting Started With SP File Manager ..............................118
Establishing a Connection with the Receiver .....................120
Copying Files to the Office Computer ...............................120
Deleting Files from the Receiver ......................................120
UHF Networking ................................................................121
NMEA Messages ................................................................122
ALR: Alarms ..................................................................122
ARA: True Heading.........................................................122
ARR: Vector & Accuracy..................................................123
ATT: True Heading .........................................................124
AVR: Time, Yaw, Tilt.......................................................124
BTS: Bluetooth Status ....................................................125
CAP: Parameters of Antenna Used at Received Base..........125
CPA: Height of Antenna Used at Received Base ................126
CPO: Position of Received Base .......................................126
DDM: Differential Decoder Message .................................126
DDS: Differential Decoder Status .....................................127
DTM: Datum Reference ..................................................128
GBS: GNSS Satellite Fault Detection ...............................128
GGA: GNSS Position Message .........................................129
GGK : GNSS Position Message ........................................129
GGKX: GNSS Position Message .......................................130
GLL: Geographic Position - Latitude/Longitude..................131
GMP: GNSS Map Projection Fix Data ...............................132
GNS: GNSS Fix Data ......................................................133
GRS: GNSS Range Residuals ..........................................134
GSA: GNSS DOP and Active Satellites..............................134
GST: GNSS Pseudo-range Error Statistics .........................135
GSV: GNSS Satellites in View ..........................................135
HDT: True Heading.........................................................136
HPR: True Heading ........................................................136
LTN: Latency .................................................................137
MDM: Modem State and Parameter..................................137
POS: Position ................................................................138
