Updates & Downloads
GSD 20 software version 2.30
as of July 30, 2003
USB Card Programmer
Download (1.11 MB)
View download instructions and system requirements
Change History
Changes made from version 2.20 to 2.30:
- Unit will now reacquire the bottom faster when moving quickly over large changes in bottom depth greater than 200 ft (60 m).
- Sped up re-acquisition by not alternating frequency unless the user has chosen dual-frequency mode.
- Updated company name and copyright information.
Changes made from version 2.10 to 2.20:
- Corrected a minor production-related problem.
Changes made from version 2.02 to 2.10:
- Added the ability to set factory defaults via the head unit. For example, a
GPSMAP 2006/2010 can now reset the GSD 20's settings to factory defaults.
- Fixed potential problems with the serial communication related to memory leaks
and baud rate changes.
Changes made from version 2.01 to 2.02:
- Fixed potential problems if disconnected from unit.
- Improved sonar noise rejector some. Now less likely to reject weak signals when rejection isn't necessary.
Changes made from version 2.00 to 2.01:
- Changes to support production board level tests.
- Fixed a bug that potentially caused problems loading new software to remote units.