v5.20 - Classic DocuShare Home - Trimble

D.5.3 Overdetermined Positions
Series 4000 D
The Series 4000 receiver can compute overdetermined GPS positions.
D.5.4 Carrier Phase Mode
You cannot operate a Series 4000 receiver in carrier phase mode in
conjunction with the Asset Surveyor software. You can, however, use
a Series 4000 receiver to perform static surveys, provided your
receiver has the appropriate firmware options installed.
D.5.5 Base Station Operation
D.5.6 2D Modes
The Series 4000 GPS receiver may be operated as a real-time base
station in conjunction with the Asset Surveyor software on the TSC1
datalogger as described in the TSC1 Asset Surveyor Software User
Guide.
Note – The Series 4000 receiver cannot be used to log a base station
file for the purpose of postprocessed differential correction. It can only
be used as a real-time base station emitting RTK/RTCM corrections.
The Series 4000 receivers operate in overdetermined 2D mode,
meaning that they can use 4 or more satellites to compute a 2D
position. In the Auto 2D/3D context, the receiver typically switches to
computation of 3D positions whenever 4 or more satellites are
available. It does, however, remain in 2D mode if the 3D PDOP
exceeds the configured PDOP mask, but the overdetermined 2D
PDOP is below the PDOP mask.
TSC1 Asset Surveyor Operation Manual 265