Introduction
7
Operation and Reference
OPTION F - Fast Data Output
When this option is enabled, the receiver can be set to output NMEA messages and
raw data from the serial port at rates up to 10 Hz (0.1 second intervals). Without this
option, frequencies up to 5 Hz (0.2 second intervals) are available.
OPTION T - Point Positioning
When this option is enabled, the receiver can be put into point positioning mode using
the $PASHS,PPO command. Point positioning mode improves the accuracy of an
autonomous position of a static point.
OPTION 3 - Observables
This option determines the number of data observables available (Table 1.3).
OPTION J - RTK Rover
When this option is enabled, the receiver can be set as an RTK (CPD) rover station
capable of receiving carrier phase data transmitted by the Base receiver and used to
compute real-time centimeter-level RTK positions. This option requires that the
Observables option be set to 3. For RTCM message types 18/19 and 20/21, the
RTCM Rover option [U] is also required.
OPTION K - RTK Base
When this option is enabled, the receiver can be set as an RTK base station capable
of outputting carrier phase data used by the Rover receiver to compute real-time
centimeter-level RTK positions. The output will be in proprietary DBEN or RTCM-104,
version 2.3 format. This option requires that the Observables option be set to 3. To
transmit RTCM 18/19 or 20/21 the B option is also required.
Table 1.3.
Option 3 Observables
Option
Code Phase
Carrier Phase
None
C/A on L1, P-Code on L1/L2
None
1
C/A on L1, P-Code on L1/L2
None
2
C/A on L1, P-Code on L1/L2
L1 only
3
C/A on L1, P-Code on L1/L2
L1/L2
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