Rtk tab – Spectra Precision FAST Survey User Manual

Page 21

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Send file after config: You may have a number of additional
commands executed (proprietary commands of the

“$PASH” type) when later you tap on

to configure the

receiver. These commands must have been saved to a text
file, for example to a file created using

Equip > GPS Utility

Send command. To select the file you want the receiver to

execute when being configured, tap on the blue button
and highlight the corresponding file name.

•

NMEA Output Port: You may ask the base to output one or
more NMEA messages (GGA, GLL, RMC, VTG, GSV, GSA,
ZDA, GST: see screen example) on the specified output
port. Once you have defined the

output port (common to

all NMEA messages), tap on the

Configure button and

then, for each desired NMEA

message, select its output

rate (in Hertz or seconds).

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Use QZSS: Enables/disables the use of the QZSS (Quasi-
Zenith Satellite System) constellation covering Japan and
the Far East.

•

Use GPS: Enables/disables the use of the GPS
constellation (enabled by default).

•

Source Datum: If GPS is used, this is a read-only field
providing the name of the datum (i.e. “W84”) on which
position solutions are computed. If GLONASS is used and
GPS is not used, you have the choice of which datum to
use: either “W84” (GPS datum) or “PZ90.02” (GLONASS
datum).

•

Virtual Antenna: This option is disabled by default.

Enabling the virtual antenna, which is defined as the

generic “ADVNULLANTENNA” GNSS antenna, allows all

collected data to be decorrelated from the GNSS antenna

actually used at signal reception level. This may be useful

if you wish to post-process the raw data collected with a
rover from another manufacturer with the raw data
collected with this base.

RTK Tab

Use this tab to define:

1. The type of device (“

Device”) the GNSS receiver will use

to forward its corrections to users.

2. Possibly the network (“

Network”) the base will rely upon to

deliver its corrections to users.

3. The type of corrections (“

Message Type”) the GNSS

receiver will generate.

4. Optionally the Repeater mode for ProMark/ProFlex 800

receivers (Off or On).