Factory default settings, Com1, Com2 – NavCom LAND-PAK Rev.N User Manual
Page 18: Message descriptions
Technical Reference Manual Rev. N
Blk = All;
Blu = IOP w/Internal Radio
;
Red = IOP & LBM
;
Grn = Engine only
16
Factory Default Settings
COM1
Configuration - Data port
Rate – 19.2Kbps
Output of NMEA messages GGA & VTG scheduled @ 1Hz rate
Though the output rate defaults to 1Hz, the data output rate can be changed to On
Change. Messages GGA and VTG follow the navigation rate when set to On
Change.
This port is normally used to output data to other devices or machines that can make immediate
use of the precise positioning data available from the SF-2050. COM1 also serves as the DGPS
correction input/output port when NCT, CMR, or RTCM RTK correction services are in use.
COM2
Configuration - Control Port
Rate – 19.2Kbps
This port is normally used to input and output proprietary messages used for navigation and
receiver setup. The table below describes the default messages needed to best initiate
surveying with minimal effort. The user has full control over the utilized message types and their
associated rates via either StarUtil or a third party software/utility.
Msg
Rate
Description
44
On Change
Almanac
81
On Change
Ephemeris
86
On Change
Channel Status
A0
On Change
Alert Message
AE
600 Seconds
Identification Block
B0
On Change
Raw Measurement Data
B1
On Change
PVT Solution
The term On Change indicates that the SF-2050 will output the specified message
only when the information in the message changes. On occasion, there may be an
epoch without a message block output.
Message Descriptions
The following messages are described in detail in the section, System Control & Response
Commands.
44 Packed Almanac:
Data corresponding to each satellite in the GPS constellation, including: GPS Week number
of collected almanac, GPS Time of week [in seconds] of collected almanac, almanac
reference week, almanac reference time, almanac source, almanac health, pages 1-25, and
sub-frames 4 and 5.
81 Packed Ephemeris:
Individual satellite tracking information including: GPS Week number of collected ephemeris,