Topcon GR-3 User Manual

GR-3 Receiver Setup and Survey
GR-3 Operator’s Manual
4-6
Figure 4-3. Antenna Offset Measurements
• SHMM to ARP vertical offset = 168mm
• SHMM to ARP radius = 78.3mm to side; 95.8mm to corner
Table 4-1 gives the offset values for the receivers.
Table 4-1. Offset Values for GR-3 Receiver
ARP To L1 Phase Center ARP To L2 Phase Center
Up 228.8 MM. 216.3 MM.
Vertical Height
to ARP
Station Marker
or
Tip of RTK Pole
Slant Height
to Base of
Corner on
Gray Bumper
66.5mm
168mm
228mm228mm228mm228mm228mm228mm234.5mm
A
B
A = ARP to edge = 78.3
B = ARP to corner = 95.8
49mm
When measuring the height of
the Rover antenna, include the
height of the Quick Disconnect.

Topcon GR-3 Specifications

General

Brand	Topcon
Model	GR-3
Category	Receiver
Language	English