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Jan
6
HYPACK 2017 Training Event
Posted by Jerry Knisley on 06 January 2017 03:32 PM

Hello,

     It is finally here, the HYPACK 2017 training event in New Orleans. All of the preparations are complete, the van is packed and Rob Baird is on his way. This year the training is not being broadcast live as there were too many issues with the hotel internet and then the stream service failed on the last day. We are recording the event as usual but it will be posted later in January. If you have not already checked out the website for the training event, the link below will take you there. We have a full schedule of planned seminars in both the main room and the two expert session rooms. If you have any questions regarding the event please let us know.


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Dec
29
A Leap Second to be added December 31st, 2016
Posted by Jerry Knisley on 29 December 2016 09:46 AM

A leap second will be added on December 31, 2016.

The first leap second was inserted into the UTC time scale on June 30, 1972. Leap seconds are used to keep the difference between UT1 and UTC to within ±0.9 s. The table below lists all leap seconds that have already occurred, or are scheduled to occur.

What is a leap second?

A leap second is a second added to Coordinated Universal Time (UTC) in order to keep it synchronized with astronomical time. UTC is an atomic time scale, based on the performance of atomic clocks that are more stable than the Earth's rotational rate. Astronomical time (UT1), or mean solar time, is based on the rotation of Earth, which is irregular.

There are two main reasons that cause leap seconds to occur. The first is that the duration of the atomic second was measured and defined by comparing cesium clocks to the Ephemeris Time (ET) scale, an obsolete time scale that defined the second as a fraction of the tropical year. The duration of the ephemeris second was slightly shorter than the mean solar second and this characteristic was passed along to the atomic second. If the atomic second had been defined with respect to the mean solar second, it is likely that leap seconds would have been required much less frequently. The second reason for leap seconds is that the speed of the Earth's rotation is not constant. It sometimes speeds up, and sometimes slows down, but when averaged over long intervals the trend indicates that it is gradually slowing. This gradual decrease in the rotational rate is causing the duration of the mean solar second to gradually increase with respect to the atomic second.

Are there benefits and/or detriments to adding leap seconds?

By keeping Coordinated Universal Time (UTC) within one second of astronomical time, scientists and astronomers observing celestial bodies can use UTC for most purposes. If there were no longer a correction to UTC for leap seconds, then adjustments would have to be made to time stamps and legacy equipment and software which synchronize to UTC for astronomical observations. However, adding a second to UTC can create problems for some systems, including data logging applications, telecommunication systems and time distribution services. Special attention must be given to these systems each time there is a leap second.

NIST Information on Leap Seconds

Most Importantly, How does a Leap Second affect my Survey?

The HYPACK software uses the time of the computer or the time of the sensor to know when a reading occurred. Time is the most critical part of any survey. Knowing this, the Leap Second should not affect anyone negatively. We will be running our GPS over night and recording the GPS signal to determine if there are any unintended consequences but at this time we are confident that the software is ready. According to what has been read on the subject, the GPS satellites do not account for leap seconds internally. They transmit their internal time along with a number of leap seconds according to the GPS Interface Specification. The hardware on your vessel uses this information to determine what time the signal was received. Any modern GPS system should take this into account and report the correct time.

*Information on this page was copied from the NIST website


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Dec
23
Happy Holidays from HYPACK Support
Posted by Jerry Knisley on 23 December 2016 02:49 PM

     The HYPACK offices will be closed on Monday the 26th and Tuesday the 27th of December in observance of the Christmas Holiday. The office will reopen at 8:30 am on Decemebr 28th.

If you need to reach the on call Support Technician please call them at (860) 975-4005 and you will be forwarded. If the on call Support Technician does not answer, please leave a message and they will return your call as quickly as they can.  


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Nov
23
Thanksgiving Holiday at HYPACK
Posted by Jerry Knisley on 23 November 2016 02:39 PM

Hello,

        We are excited whenever Thanksgiving is here. It is a perfect time to thank everyone, including you, our customers! We would like to thank you for believing in our products and services. Allow us to express our gratitude for having you as one of our loyal customers. The past year has really been good, and we look forward to assisting you in the coming year.

       The HYPACK Offices will be closed November 24th and November 25th, however there will be a technician on call for support. To reach the on call support technician please call the main office at (860) 635-1500 and press 9 when prompted. If the on call technician does not answer please leave a message and your call will be returned as soon as possible.


We hope you’ll have a fruitful Thanksgiving celebration this year.

Again, Happy Thanksgiving!

The HYPACK Support Team


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Aug
12
WINDOWS 10 Anniversary Update and HYPACK
Posted by Jerry Knisley on 12 August 2016 02:27 PM

Recently Microsoft rolled out the Windows 10 Anniversary Update. When an update is installed it not only adds features to the operating system but occasionally it also removes files that Microsoft has deemed no longer required. This is the case with the Windows 10 Anniversary Update. There is a file that Microsoft removed with the update that is required by the HYPACK SURVEY program to function properly.  

The way to fix this issue is to download a single file and place it in the HYPACK directory. This additional file will not affect the update to your windows 10, and all functions for that update will work as intended. The file can be found on the HYPACK Support Website by clicking on link here WINDOWS 10 Anniversary fix for HYPACK.

If you have any questions regarding this please contact HYPACK Technical Support at (860) 635-1500 or via email at Help@HYPACK.Com 


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