Tac32

The Totally Accurate Clock (32-bit)

For additional information, contact info@cnssys.com.

Tac32Plus Software

CNS Clock and Tac32 Software	CNS Systems produces the CNS Clock and the CNS Clock II. For more information about CNS Systems' products go to the CNS Systems main page.
CNS Clock and Tac32 Software	For more information on Tac32 software, including sample screen images, go to the Tac32 Software page. Ordering information and prices
	Install Tac32 directly from the Web: This installation method uses InstallFromTheWeb technology, which provides you with the fastest download and error recovery. Click the Install button at left to install the latest version of Tac32. Windows NT/2000/XP/2003 users must be logged on as the administrator.
	Install Tac32 locally: Download the Tac32 installation file Tac32S.exe by clicking the icon to the left then execute the file on your computer.
	The Documentation for Tac32 and the CNS Clock II is available in Adobe format. To download right click on the button to the left and choose to save the target as a file.
	The Documentation for Tac32 and the original CNS Clock is available in Adobe format. To download right click on the button to the left and choose to save the target as a file.
	The Tac32 documentation file requires Adobe Acrobat reader version 7.0 or newer. The reader can be installed as a plug-in for use within your Web browser.
Latest Version: 2.7.6	Version 2.7.6, Jul 22, 2008 Enhancements: Updated the CMC hardware-software identification message (#45) decoder to reflect more recent message data specification and to display more information. Allow use of any baud rate for any receiver. New models of some receivers are implementing new data rates. Corrections: Correctly display PRN32 on the Satellite Az-El Chart. Fixed a memory leak.
Version: 2.7.5	Version 2.7.5, Nov 11, 2007 Enhancements: Recognize the iLotus built M12M based on the new SiRF copyright notice. Corrections: Change the "Bad Almanac" message to "Cold Start or Bad Almanac" for the M12 series receivers.
Version 2.7.4	Version 2.7.4, Aug 23, 2007 Enhancements: Added 100PPS support for the CNS Clock II. The CNS Clock II is unique in that it provides a precision 1PPS even when in 100PPS mode so that normal operations can continue in 100PPS mode. Corrections: Correctly identify the new iLotus M12M receiver modules. These modules are designed by Motorola but built by iLotus. Added interim support for the SIGNAV TM3-1 receiver which is intended to be a Motorola M12 Timing receiver clone. CMC (Marconi) message receive was broken in Version 2.7.3 when converting to unicode and is now fixed. The CMC receiver's DGPS Status message was being derived from the wrong message thus giving false indications. Also, the CMC DGPS status tells if DGPS is enabled, not if it is being received, so the display message was changed. In decoding the CMC message 33 it was found that the satellite table was incompletely cleared resulting in unused satellites remaining on the screen and occasionally even showing duplicate satellites. This is now fixed. Identify CMC Allstar and Superstar receivers separately. Improve CMC receiver initialization, especially disabling undesired messages so that the Superstar correctly displays its data on TAC32's screens. Fix the default size of the main window for first time users.
Versions 2.0 - 2.7.3 1.0 - 1.2.8	For earlier release notes click on the Version 1 or 2 aircraft icons below.
	Fly off to the Release Notes pages The release notes archive is on separate pages. Click on the airplanes to get there.