Data Output
This page is used to define the data messages delivered by the receiver on its various ports. The following groups of parameters need to be defined:
• Differential messages
• NMEA messages
• Raw data
These groups of parameters are detailed below.
Differential Messages
Use this page to define the differential messages generated by a base. The following data formats are possible:
• ATOM
• CMR
• RTCM 2.3
• RTCM 3.0 & 3.1
• DBEN
All the message types pertaining to a given data format are listed vertically.
To enable the output of a differential message, you just need to enter the desired refresh rate (in seconds) for this message in the corresponding field.
Leaving a field blank means you don’t want the message type to be output.
For all ATOM message types, you also need to choose between the different formats available:
• 4: Standard (Static Base)
• 100: Compact (Static Base)
• 101: Super Compact (Static Base)
• 204: Standard (Moving Base)
• 300: Compact (Moving Base)
For each of the listed CMR and RTCM message types, you can place the mouse cursor over the “I” sign adjacent to the Refresh Rate field and read the full definition of the message.
The ports used to output the differential messages are defined on the Base Setup page. A priori, it does not make sense to output differential messages in a rover.
NMEA Messages
Use this page to define the NMEA messages generated by a receiver, whether a base or a rover.
To define the output of an NMEA message on a given port, you just need to select the message type from the Message drop-down list, the output port from the Output drop-down list, then enter its output rate, in seconds, in the Rate field, and finally click on the Add button.
The new message definition will then appear as a new row in the table on the right.
Before you select a message type from the drop-down list, you can hold the mouse cursor over this message name in the drop-down list. After about one second, a tip box will appear providing the full definition of this message.
Note that for messages PTT, TTT and XDR, you don’t have to define an output rate, due to the very nature of these messages.
To change the settings of an existing message (port, rate), select the corresponding row in the table. This populates the three fields on the left with the settings of that message. Edit the port and/or rate and then click on the Modify button to save your changes.The table row is updated accordingly.
Note that depending on the current selection on this page, the button located underneath the three fields on the left may be either grayed or with a different label (Add or Modify).
Deleting a message definition can be done by simply clicking on the corresponding “trash” sign in the Clear column on the far right. This deletes the table row.
There is also a Clear All button underneath the table that allows you to delete all the message definitions from the table in one click.
Raw Data
Two data formats are possible:
• ATOM (navigation data and other data)
• Ashtech Legacy (navigation data and other data)
Follow the instructions below to define the output of messages, whether in ATOM or Ashtech Legacy format:
• Select the message type from the Message drop-down list, the output port from the Output drop-down list, then enter its output rate, in seconds, in the Rate field, and finally click on the Add button. The new message definition will then appear as a new row in the table on the right.
Before you select a message type from the drop-down list, you can hold the mouse cursor over this message name in the drop-down list. After about one second, a tip box will appear providing the full definition of this message.
• To change the settings of an existing message (port, rate), select the corresponding row in the table. This populates the three fields on the left with the settings of that message. Edit the port and/or rate and then click on the Modify button to save your changes.The table row is updated accordingly.
Note that depending on the current selection on this page, the button located underneath the three fields on the left may be either grayed or with a different label (Add or Modify).
• Deleting a message definition can be done by simply clicking on the corresponding “trash” sign in the Clear column on the far right. This deletes the table row.
• There is also a Clear All button under the table that allows you to delete all message definitions from the table in one click.