Topcon GRS-1 - GPS Details

Specifications
GRS-1 Operator’s Manual
A-6
GPS Details
Table A-2 lists the GPS board’s general specifications.
Serial port 1 port for communication with the GMS+ board (port A);
small connector
USB port 1 port for Windows Mobile; type Mini-B ver. 1.1; connect
to PC using ActiveSync or Device Center
External power port 1 port; DC jack type A; for connecting the AC adaptor or
external battery
SD card slot 1 slot for memory storage and I/O up to 2GB FAT16
format supported (SDHC cards are not currently
supported)
External antenna
port
Lemo FLS.00.250connector;
5 VDC output to external antenna
Table A-2. GPS Board Specifications
Tracking Specifications
Tracked Signals GPS/GLONASS, L1 C/A Code & Carrier, GPS L2C
WASS/EGNOS/MSAS
Receiver Type G – GPS L1
GD – GPS L1/L2
GGD – GPS/GLONASS L1/L2
Standard Channels 72
Cold Start
Warm Start
Reacquisition
< 30 sec
< 10 sec
< 1 sec
Survey Accuracy
Static For L1 – H: 3mm + 0.8ppm (x baseline length);
V: 4mm + 1.0ppm (x baseline length)
For L1 +L2– H: 3mm + 0.5ppm (x baseline length);
V: 5mm + 0.5ppm (x baseline length)
Table A-1. GRS-1 General Specifications (Continued)