Install Tac32

CNS Systems, Inc.

Tac32
The Totally Accurate Clock (32-bit)
For additional information, contact info@cnssys.com.

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.

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. Updated November 10, 2006. Note: Versions of this document since April 2006 have been missing major sections. Please replace with this new documentation.

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. Updated April 5, 2006.

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:
2.7.5 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.

Version
2.7.3 Version 2.7.3, Apr 2, 2006
Enhancements:

UNICODE version of the software is now automatically installed on all 32-bit versions of Windows (NT/2000/XP/2003). This allows users with Japanese and Chinese versions of Windows to successfully enter passwords.
When a mode search fails, set the default mode to Motorola Binary ("mot bin") instead of generic NMEA so that first time users start up in the most used mode.
Added support for the Motorola/i-Lotus M12M GPS timing receiver.
When recording periodic GPS logs, provide the user the option to use the GPS second number instead of the UTC second number to avoid the effects of Leap Seconds on the log data set. Also provide the user the option to shift the period +/- one second to allow synchronization of log data with other data sources.

Corrections:

Corrected a sign error in the UTC vs. GPS time message on the main screen.

Version
2.7.2 Version 2.7.2, December 3, 2003
Enhancements:

Provide complete decoding of the T-RAIM message for the M12+ (@@Hn).
Provide manual control and full decoding for M12+ DSP message (@@Tr).

Corrections:

Oncore XT receivers are now correctly identified. These are receivers with part numbers starting with "A".
If a Conexant or Navman Rx, print "CNXT/NVMN" on status line, not "Motorola CNXT".
Set Tropo Corrections ON for precision Timing mode.
Changed the default internal receiver delay to better match the values determined during the USNO calibration testing. This value is different for different versions of the CNS Clock.
When RINEX log is open be sure range data messages are logged when logging period is longer than once per second (Motorola VP series 6 and 8 channel receivers only).
Provide DOP Status messages for UT, UT+ and CNXT receivers.
Added decoding of antenna sense bits in M12+ Self Test response.
Fixed RINEX logging so that its period correlates with the second number. Thus log entries for a 10-second period will occur at seconds 0, 10, 20, 30, 40 and 50.

Version
2.7.1 Version 2.7.1, September 30, 2002
Corrections:

Oncore XT receivers are now correctly identified. These are receivers with part numbers starting with "A". This problem was introduced in V2.4.2 but was made worse with a change to the default configuration in V2.7.0.

Version
2.7.0 Version 2.7.0, September 14, 2002
Enhancements:

Update Help files to add instructions for Windows XP setup and for multiple instance setup.

Create M12+ and CNXT as distinct new receiver types.

Corrections:

Change the function of the "?" button on the toolbar from accessing "About" to accessing "Help".

For M12 and M12+ Timing Receivers activate the Tropo, 100PPS and Self Survey controls.

Disable 100PPS for CNXT.

Do not display "Insufficient Satellites" error if "Bad Almanac" is detected.

Versions
2.0.0 - 2.6.1
1.0.0 - 1.2.8 For earlier release notes click on the Version 1 or 2 aircraft icons below.

Fly off to the Release Notes Archives
The release notes archive is now on separate pages.
Click on the airplanes to get there.

Copyright © 1997-2007 CNS Systems, Inc. All rights reserved.

*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. Updated November 10, 2006. Note: Versions of this document since April 2006 have been missing major sections. Please replace with this new documentation.
	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. Updated April 5, 2006.
	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:* *2.7.5*	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.
Version 2.7.3	Version 2.7.3, Apr 2, 2006 Enhancements: UNICODE version of the software is now automatically installed on all 32-bit versions of Windows (NT/2000/XP/2003). This allows users with Japanese and Chinese versions of Windows to successfully enter passwords. When a mode search fails, set the default mode to Motorola Binary ("mot bin") instead of generic NMEA so that first time users start up in the most used mode. Added support for the Motorola/i-Lotus M12M GPS timing receiver. When recording periodic GPS logs, provide the user the option to use the GPS second number instead of the UTC second number to avoid the effects of Leap Seconds on the log data set. Also provide the user the option to shift the period +/- one second to allow synchronization of log data with other data sources. Corrections: Corrected a sign error in the UTC vs. GPS time message on the main screen.
Version 2.7.2	Version 2.7.2, December 3, 2003 Enhancements: Provide complete decoding of the T-RAIM message for the M12+ (@@Hn). Provide manual control and full decoding for M12+ DSP message (@@Tr). Corrections: Oncore XT receivers are now correctly identified. These are receivers with part numbers starting with "A". If a Conexant or Navman Rx, print "CNXT/NVMN" on status line, not "Motorola CNXT". Set Tropo Corrections ON for precision Timing mode. Changed the default internal receiver delay to better match the values determined during the USNO calibration testing. This value is different for different versions of the CNS Clock. When RINEX log is open be sure range data messages are logged when logging period is longer than once per second (Motorola VP series 6 and 8 channel receivers only). Provide DOP Status messages for UT, UT+ and CNXT receivers. Added decoding of antenna sense bits in M12+ Self Test response. Fixed RINEX logging so that its period correlates with the second number. Thus log entries for a 10-second period will occur at seconds 0, 10, 20, 30, 40 and 50.
*Version* *2.7.1*	Version 2.7.1, September 30, 2002 Corrections: Oncore XT receivers are now correctly identified. These are receivers with part numbers starting with "A". This problem was introduced in V2.4.2 but was made worse with a change to the default configuration in V2.7.0.
*Version* *2.7.0*	Version 2.7.0, September 14, 2002 Enhancements: Update Help files to add instructions for Windows XP setup and for multiple instance setup. Create M12+ and CNXT as distinct new receiver types. Corrections: Change the function of the "?" button on the toolbar from accessing "About" to accessing "Help". For M12 and M12+ Timing Receivers activate the Tropo, 100PPS and Self Survey controls. Disable 100PPS for CNXT. Do not display "Insufficient Satellites" error if "Bad Almanac" is detected.
*Versions* *2.0.0 - 2.6.1* *1.0.0 - 1.2.8*	For earlier release notes click on the Version 1 or 2 aircraft icons below.
	*Fly off to the Release Notes Archives* *The release notes archive is now on separate pages.* *Click on the airplanes to get there.*