Topcon GR-3 User Manual

Specifications
GR-3 Operator’s Manual
A-8
Cinderella days is an option that turns a single frequency, GPS
receiver into a dual-frequency, GPS+GLONASS receiver for 24 hours
every other Tuesday at GPS midnight. Refer to Topcon’s website for
more information and specific Cinderella day dates.
Bluetooth Module Details
Table A-3 lists the Bluetooth wireless technology module’s general
specifications.
Features Up to 20 Hz update rate for real time position and raw
data (code and carrier)
10cm code phase and 0.1mm carrier phase precision
RTCM SC104 version 2.1, 2.2, 2.3, and 3.0 I/O
Multiple Base RTCM
Geoid and Magnetic Variation models
RAIM
Different DATUMs support
Features
(continued)
Output of grid coordinates
CMR and CMR+ support
Memory
Internal Memory SD (secure data) card, removable
Capacity
Dependent on capacity of the installed SD/MMC card
a
,
currently up to 1 GB
Logging Time 53 hours (8 MB, 15sec, L1/L2, 7 satellites)
Logging Interval 0.05 to 86400 seconds, depending on purchased options
a. SD = secure digital; MMC = mulit-media card
Table A-3. Bluetooth Module Specifications
Range up to 10 m
Type Class 2
Service classes Miscellaneous
Supported profiles LM, L2CAP, SDP, SPPP
Table A-2. GPS Board Specifications (Continued)

Topcon GR-3 Specifications

General

Brand	Topcon
Model	GR-3
Category	Receiver
Language	English