Table of Contents

Setting a Base With a Radio Transmitter

This page is an abridged version of the Base Setup-Full Setup page only showing the settings required to configure a base with an external radio transmitter.

 

These groups of parameters are detailed below.

Base

Use this area to enter the position of the base.

 

Parameter

Designation

$PASHS

Dynamic

Necessarily static.

DYN

Station ID

Choose and enter a station ID for your reference station, according to the type of differential messag­es it will generate:

   0-1023 (RTCM 2.3)

   0-4095 (RTCM 3.x and ATOM)

   0-31 (CMR & CMR+)

STI

“Get current po­sition” button

Click on this button if you want to allocate the last position computed by the receiver as the reference position for the base. As a result, the Lat/Lon/Height fields below are updated with the coordinates of this last computed position.

CPD,MOD

Latitude

Longitude

Ellipsoid Height

Latitude, longitude and ellipsoidal height defining the reference position of the base. May be entered manually or using the “Get Current position” button.

POS

Antenna

Use this area to define the parameters of the antenna used physically at the base, as well as a virtual antenna if necessary. A virtual antenna may be defined to allow the base to deliver raw data as if it were collected with this antenna.

See the description of each parameter in the table below.

 

Parameter

Designation

$PASHS

Reference Po­sition

Select one of the options below to define the phys­ical location of the base:

   L1 phase center

   Antenna Reference Point (ARP)

   Ground mark

ANR

Measurement Type

Specify the type of measurement (“Slant” or “Ver­tical”) through which the above antenna height was measured.

ANH

Antenna Height

Enter the measured antenna height according to the measurement type used and the selected dis­tance unit.

ANT or ANH

Receiver an­tenna

Select the name of the antenna used at the base. This antenna name can only be chosen from a list of antenna names stored in the receiver.

UNKNOWN, NULLANTENNA, ADVNULLANTEN­NA are special definitions of antennas typically used as virtual antennas.

ANP,OWN

Antenna Radi­us

(Only if “Slant Height” measurement type select­ed). Enter the antenna radius according to the se­lected distance unit.

ANT

SHMP Offset

(Only if “Slant Height” measurement type select­ed). Enter the vertical offset of the Slant Height Measurement Point for the antenna used by the rover. Take care to enter this parameter in the se­lected distance unit. See also the Note below.

ANT

Virtual Antenna

This parameter allows you to define a virtual an­tenna:

   Select “Off” if you do not want to define one

   If you want one, select the virtual antenna name for which you would like the receiver to deliver raw data, i.e. as if the raw data had been collected using this antenna.

This antenna name can only be chosen from a list of antenna names stored in the receiver.

NULLANTENNA, ADVNULLANTENNA, etc. are the most commonly used virtual antennas.

ANP,OUT

 

Satellites

Use this area to define the constellations tracked by the base as well as the elevation mask applied to all constellations. See the description of each parameter in the table below.

 

Parameter

Designation

$PASHS

Recording and Output Eleva­tion Mask

Enter the elevation mask, in degrees, used by the re­ceiver to determine which raw/differential data from each visible satellite should be recorded or output, de­pending on the elevation of the satellite. No data from any visible satellite located below this elevation angle will be recorded or output.

ELM

GLONASS

Check this button to enable GLONASS tracking (re­quires installed S option). Clear it otherwise.

GLO

SBAS

Check this button to enable SBAS tracking.Clear it otherwise.

SBA

Transmitter

Use this area to set the receiver port to which the external radio transmitter is connected, declare the type of radio used and enter its settings.

 

Parameter

Designation

$PASHS

Message

Choose the type of differential message that will be broadcast by the transmitter. The detail of the selected message appears next to the field.

 

Serial Port

Specify the serial port to which the transmitter is con­nected.

 

Baud Rate

Choose the baud rate used on that port.

PRT

Mode

Only port A can be RS232 or RS422. All the others are necessarily RS232.

 

RTS/CTS

Check this button to enable the RTS/CTS handshaking protocol on the port (if RS232). Clear it otherwise.

CTS

Device

Select the model of the external radio connected to the base:

   None/Cable

   U-Link TRx

   Magellan UHF: Radio transmitter P/N 800986

   Pacific Crest

   ARF7474B EU: License-free radio for use in Europe

   ARF7474A NA: License-free radio for use in North America

RDP,TYP

 

Following the selection of a radio type, new fields appear just underneath the Device field showing the current settings of the transmitter. Set the radio parameters as follows:

 

Parameter

Designation

$PASHS

Load trans­mitter settings button

(All radios except ARF7474A NA) First click on this button to load the current settings of the chosen ra­dio type (“Loading..” is displayed in the Channel field while these settings are being loaded).

As a result, the Channel, Protocol and Airlink Speed fields are refreshed to view the current radio set­tings.

$PASHQ,RDP,PAR

Channel

(All radios except ARP7474A NA) Choose one of the available channels for this radio.

RDP,PAR

Protocol

(For U-Link TRx and Pacific Crest radios only) Choose one of the protocols below:

   DSNP (U-Link TRx only)

   Transparent

   TrimTalk (Pacific Crest only)

RDP,PAR

Airlink Speed

(For U-Link TRx and Pacific Crest radios only) Choose one of the baud rates below:

   4800

   7600 (U-Link TRx only)

   9600

   19200 (Pacific Crest only)

RDP,PAR

Forward Er­ror Correction

(For Pacific Crest radio only)

Choose whether this option must be enabled or not in the Pacific Crest transmitter:.

   Button on: Enabled

   Button off: Disabled

RDP,PAR

Scrambler

(For Pacific Crest radio only)

Choose whether this option must be enabled or not in the Pacific Crest transmitter:.

   Button on: Enabled

   Button off: Disabled

RDP,PAR