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FAQs Ashtech



1.

Where can I find Firmware, Reference Manuals, and Software for Ashtech OEM GNSS receiver boards?

2.

Where can I find information on Ashtech OEM GNSS Receiver Boards?

3.

What is the required Antenna Gain for Ashtech OEM GNSS Receiver Boards?

4.

How do I build a ‘G’ file from current Ashtech OEM GNSS Receiver Boards?

5.

Can I get support for Ashtech Survey, GIS, and Mapping and Reference Station Systems?

6.

What Program is used to load Firmware or Receiver Options to Ashtech OEM GNSS Receiver Boards?

7.

I’m having trouble obtaining a solution.  What can I try?

8.

What are the speed and altitude limits of the AshTech OEM GNSS Receiver Boards?

9.

The receiver returns a ‘NAK’ or no response to commands and queries.  What can I try?

10.

I want to setup an MB100 in DUO mode to produce an internal heading solution.  What script do I need?

11.

On my MB100 / ABX100 I am connected on the Ant2 connector, but do not track any satellites.  What can I do?

 

1.

Where can I find Firmware, Reference Manuals, and Software for Ashtech OEM GNSS receiver boards?

Firmware, Manuals, and Software for Ashtech OEM GNSS Receiver Boards can be found on the Ashtech FTP site:
ftp://ftp.ashtech.com

2.

Where can I find information on Ashtech OEM GNSS Receiver Boards?

General information can be found on the Trimble InTech site:
http://intech.trimble.com/oem_gnss/receiver_boards

3.

What is the required Antenna Gain for Ashtech OEM GNSS Receiver Boards?

In general, most receivers require the antenna/LNA gain minus the RF Network Loss to be between +20dB and +30dB.

The HDS-800, MB-XXX, and ABX products require this to be between +23dB and +45dB.

Please refer to the reference manual for your specific product’s specifications.

4.

How do I build a ‘G’ file from current Ashtech OEM GNSS Receiver Boards?

Legacy products that do not have the ATOM message can use the DOS Data logger software (available on ftp://ftp.ashtech.com)

The MB-One and HDS-800 are capable of logging ‘G’ files internally.

Users can log the ATOM NAV, ATR, and RNX,&SCN,0 messages in a file and name that file with the ‘G’ file naming convention.

The ‘G’ file naming convention: (GWW01A15.067)
• G = Name of the file
• WW01 = Alphanumeric site name (usually set by command: ‘$PASHS<SIT,xxxx’)
• A = File sequence designator (A, B, C, etc…)
• 15 = Year
• .067 = Julian day of the year

The RINEX software tool can convert the ATOM file to RINEX.  Ashcom is a good tool to log binary data for this purpose.

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5.

Can I get support for Ashtech Survey, GIS, and Mapping and Reference Station Systems?

Requests for support on Ashtech Survey, GIS, Mapping and Reference Station Systems are referred through the Spectra Precision Dealer network.  If you are unaware of your particular Spectra Dealer, please see the Spectra Precision Dealer Locator:
http://www.spectraprecision.com/ashtech/dealerLocator.jsp?RF=PRO-EN&LANGUE=0 

6.

What Program is used to load Firmware or Receiver Options to Ashtech OEM GNSS Receiver Boards?
For the DG14 Family and GG12W, Firmware or Receiver Options can be loaded using the GNSS Program Loader.

For the MB-One, options can be loaded with Ashcom or via the Web User Interface.  Firmware can be loaded via the Web User Interface or directly via the USB port.
• Instructions for Firmware loading are available in the firmware release notes.

Ashcom, Universal Program Loader, and the GNSS Program Loader are available on our FTP site:
ftp://ftp.ashtech.com

7.

I’m having trouble obtaining a solution.  What can I try?

The antenna should be placed outside with a clear view of the sky.  Try to eliminate obstacles that obscure a clear view of the sky and cause multipath as much a possible.

8.

What are the speed and altitude limits of the Ashtech OEM GNSS Receiver Boards?

By law, the maximum velocity is 1,000 knots (514 m/s) and the maximum altitude is 18,287 meters (60,000 ft.).  When the antenna exceeds either limit, no solution is provided.  Some receivers have the capability to remove one or both limits.  Your RSM can provide the needed paperwork and process.

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9.

The receiver returns a ‘NAK’ or no response to commands and queries.  What can I try?

All commands and queries must be in upper-case and end with a CR/LF.
• The CR/LF is automatic when using Ashcom and Evaluate. 
• If using a third party software, like HyperTerminal, ensure to enable CR/LF.

If the receiver does not have the options to support the command or query, it will return a ‘NAK’.
• Options can be queried by ‘$PASHQ,RIO’ or ‘$PASHQ,RID’

10.

I want to setup an MB100 in DUO mode to produce an internal heading solution.  What script do I need?

Configurations can easily be performed via scripts.  The follow is an example for an MB100 to produce an internal heading solution in DUO mode.
$PASHS,CFG,DUO
$PASHS,DIF,PRT,H
$PASHS,CPD,BAS,1
$PASHS,TOP,SBA
$PASHS,VEC,TT
$PASHS,CPD,ARR,MOD,ON PASHS,CPD,ARR,LEN,0 

11.

On my MB100 / ABX100 I am connected on the Ant2 connector, but do not track any satellites.  What can I do?

Most likely, the auto antenna detection did not recognize the command.
• Disconnect and reconnect the antenna.
• Send the command $PASHS,ANT,EXT

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