Do you know that the internal design of PC clocks cannot guarantee their accuracy. Most PC clocks gain or lose from several seconds to several minutes each day. Perhaps you have many clocks in your home or office? But what the mater is that they really accurate? Do not take it for a negligible thing. For example, most computer networks rely on clocks. When the clocks in these computers do not agree with each other or with the correct time, several negative consequences may arise, including: Operations failure, data loss or security holes. Want to have that clock be the clock on the PC you're using right now? The time synchronizer is a good choice. There is a powerful and handy time synchronization tool I will recommend to you. That is PresenTense Time Server, which came from Bytefusion Ltd. Following are the detailed introductions of this network time server. Come with me and view how excellent this time synchronization tool is now!

PresenTense Time Server is an RFC standard multi protocol windows time server supporting the NTP4 and SNTP standards. We can use PresenTense Time Server to synchronize our PC to a primary time source such as an atomic clock on the internet or an inhouse GPS reciever and offer time services to clients on our local area network. In addition, PresenTense offers hardware clock support for generic satellite clocks via the NMEA 0183 protocol, WWVB radio clocks and DCF77 radio clocks. The installation includes drivers for GPS clocks from Arbiter Systems, Spectracom, Hopf and Ultralink as well as Garmin III Plus and Garmin 5.

The key benefits and features of PresenTense Time Server include:

The default behavior for PresenTense Time Server on a multi-homed (more than one IP address) machine is to bind to ALL interfaces. In certain situations, we may not want certain time engines to bind to all interfaces so this option allows us to exclude interfaces. In the above example, the UDP Time Engine will not bind to the two interfaces shown in the Current Exclusions list. The Available Interfaces combo box shows the interfaces present on the machine. If we have an interface which is only present at certain times, launch this dialog when it is currently connected and add it to the exclusions list. We should not unnecessarily exclude interfaces as this does introduce some extra overhead for PresenTense Time Server. With PresenTense Time Server, advanced logging was introduced to the TCP, UDP and SNTP time engines.

When the NTP4 plug-in attempts to connect to a clock on it's respective COM port and receives an error, the action taken can be configured here. Failure condition is when Windows reports failure to open the com port or a USB disconnect message is received from Windows (usually indicating the USB GPS cable has been physically removed or the driver has exited). In the event that the com port can be opened but the clock is not responding or is not plugged in or has been hit by lightning etc, this will not have any effect. Windows will report successful opening of the com port and an event clk_noreply will be generated by higher routines. The service will continue to monitor the clock and when it's plugged back in or the error condition is fixed, communication will be re-established. This essentially adds a low level port failure recovery mechanism. We can choose "Try Continuously" or choose a certain number of times to try with a configured number of seconds between attempts to open the com port.

PresenTense Time Server provides special settings for us. This section currently has two settings and the documentation may not always be up to date with what actually appears here. Other options may be added without the documentation being updated.

SNTP and NTP time protocols work only with UTC/GMT/Zulu time. Time clients are responsible for adjusting the offset from the standard time sent, including adjustment for DST Daylight Saving (Summer Time). Not all devices are capable of doing this so under some circumstances, we may want to serve local time, which is set by the locale in Windows. A good example of when this may be necessary is for devices which do not have the updated DST changeover times for 2007 and beyond. If we can set the offset in the device, set it to 0 and serve local time via this option. When we activate this option, the SNTP engine will automatically be chosen. Devices which simply display the time given will changeover immediately. Some devices may statistically analyze the sudden change and skew the time toward the new time served. The computer on which PresenTense Time Server is running must have the updated DST changeover times installed. These are available from Microsoft.

When using "Undisciplined Local Clock" with the NTP4 GPS driver, it is possible to fudge the local clock to be a lower stratum than it is. The reason we may want to do this is that many devices will not accept a stratum higher than 6 as a time source.

The Priority Boost setting allows us to increase the real-time priority of PresenTense Time Server in the context of the Microsoft Windows operating system. Tasks with a higher priority receive a greater share of CPU attention. If our system runs many CPU intensive applications, use the "Priority Class High" setting to enhance the accuracy of PresenTense Time Server.

By default if we choose NTP Time Source or GPS Clock without setting a Fallback, PresenTense Time Server will enter a default server for us. Sometimes this is not desirable and can cause alarm messages when operated behind a firewall. Choose this option to stop a default server being entered.

The CMOS/BIOS clocks on many motherboards can drift while Windows is in operating. This causes a problem when the operating system is rebooted as it uses the drifted time until synchronization is achieved. To minimize the drift, PresenTense Time Server can update the CMOS/BIOS clock at regular intervals where the interval is in hours.

Additional features of PresenTense Time Server include: a NTP key generator, NTP troubleshooting software, failover redundancy, NT service support, remote administration and more.

In addition, PresenTense Time Server provides a free trial for us but only can be free used 30 days with full functions. It is a standalone software and does not need any extra software and hardware requirement. PresenTense Time Server does not contain any adware or spyware. It works with Win2000/XP/2003/Vista and its current version is 4.1. The price of the registration version is only $195.95 and we can get update and upgrade free. With all these features, simple interface, excellent usability, low cost and free trial period - why are you still reading? Download the free trial now and experience what powerful and effective it is at once! If you feel this utility is helpful indeed, introduce it to your friends please!

PresenTense Time Server delivers industrial grade network time synchronization with microsecond accuracy. It runs as a network time server with support for secure NTP version 3 and 4, SNTP and Unix-Time and offers features like user-level security and email-based error notification and more.
In addition, PresenTense offers hardware clock support for generic satellite clocks via the NMEA 0183 protocol, WWVB radio clocks and DCF77 radio clocks. The installation includes drivers for GPS clocks from Arbiter Systems, Spectracom, Hopf and Ultralink as well as Garmin III Plus and Garmin 5. Additional features include a NTP key generator, NTP troubleshooting software, failover redundancy, NT service support, remote administration and more.
PresenTense Time Server is an RFC standard multi protocol windows time server supporting the NTP4 and SNTP standards. You can use PresenTense Time Server to synchronize your PC to a primary time source such as an atomic clock on the internet or an inhouse GPS reciever and offer time services to clients on your local area network. Most leading GPS and Radio hardware clocks are supported via the serial port. Error notifications can be received via email or Syslog. PresenTense Time Server is an enterprise class windows time server that is easy to install, configure and maintain.
Technical facts And Features for PresenTense Time Server

USB disconnect recovery support
Update BIOS/CMOS clock regularly
Email notification upon error - now supports SMTP AUTH
Selective binding to interfaces on multihomed hosts
Configurable polling for GPS clocks upon COM port failure
Low cost of ownership, no yearly fees and support included
Multi protocol time server
Synchronizes to almost any true time source
Powerful configuration settings
High degree of accuracy
Offers time services to clients via your PC
Synchronizes to GPS receivers supporting the NMEA 0183 protocol
Drivers for many reference clocks including Spectracom and Hopf
Accurate, inexpensive and reliable
Supports SNTP, UDP, TCP and NTP3 / NTP4 time server protocols
Simultaneously supports clients using different time protocols

NTP drivers for many GPS Receivers included
Free Run Support
Automatic compensation for system clock drift
Redundancy if time source unavailable
Runs as a true Time Server System Service
Highly Customizable
Remote Monitoring and Administration
Advanced statistical filtering to give high accuracy

The license of this software is Free Trial Software, the price is $195.95, you can free download and get a free trial before you buy. If you want to get a full or nolimited version of PresenTense Time Server, you can buy this server utility software software.