PresenTense Time Server Facts Sheet
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PresenTense Time Server is a multi
protocol time server which synchronizes itself with any true time
source and then acts as a server for all network clients. It is
easy to set up but has powerful configuration settings for networks
which require a high degree of accuracy. This means you can use
PresenTense Time Server to synchronize your PC to a primary time source
such as an atomic clock on the internet and offer time services to
clients on your local area network.
PresenTense Time Server also allows
synchronization to GPS receivers via
RS-232 and the NMEA 0183 protocol and ships with drivers for many reference
clocks including Spectracom and Hopf.
If you need an accurate,
inexpensive and reliable time server, read on!
PresenTense Time Server operates three server components
concurrently on the ports shown below :
This feature enables you to operate time clients on your network
using different time protocols simultaneously depending on your
requirements for accuracy.
PresenTense Time Server features include :
When operating as a secondary time server, PresenTense Time Server
can synchronize to primary, network time servers of the following
protocol families :
When operating as a primary time server, PresenTense Time Server
can synchronize to GPS receivers via the PC's serial port and the
NMEA 0183 protocol. In order to be
compatible with PresenTense Time Server, GPS receivers must emit
the GPRMC or GPGGA NMEA sentence (recommended
minimum coordinates) at one or two second intervals.
PresenTense Time Server
automatically compensates for local system clock drift when
operating in NTP or SNTP mode. This ensures maximum clock accuracy
when free-running in the event of loss of connectivity to the
reference time source.
The
National
Emergency Number Association
(NENA) identifies time keeping requirements for
Public Safety Answering
Points (PSAP) such as 911 call centers. These
requirements include continuous accuracy of 100 milliseconds to UTC
when locked to the reference time source and a maximum clock drift
or error accumulation of one second pay day when the system must
"free run". See also PresenTense NTP Auditor.
An automatic fail-over mechanism switches to a redundant network
time source if the primary time source becomes unavailable (only
available when synchronizing to a primary network time server).
PresenTense Time Server can notify you by email if the time source
becomes unavailable or critical errors are encountered during
operation. Supports all types of SMTP Auth including NONE, LOGIN, PLAIN, CRAM-MD5, and NTLM.
PresenTense Time Server operates as a system service - invisibly in
the background. Configuration changes are made via the PresenTense
Time Server applet in the system control panel.
PresenTense Time Server features advanced configuration options,
including the ability to evaluate the accuracy of its time source
to within milliseconds.
Initial setup and later configuration via the control panel require
administrator privileges. This minimizes the risk of tampering with
system parameters by unauthorized users.
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Remote Monitoring and Administration
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PresenTense Time Server may be administered fully by remote and
monitored over the network to ensure accurate time keeping. Please
check www.bytefusion.com for availability of monitoring software.
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Advanced Statistical Filters
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Advanced statistical
filters ensure that erroneous measurements are discarded, thus
avoiding erratic system clock behavior.
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Time Zone Specific Reference Clock
Selection
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PresenTense Time Server automatically selects the most suitable
primary reference clock server, based on your time zone configuration and geographic location.
Trademarks
Microsoft Windows and Windows NT, Windows 2000 and Windows XP are
either registered trademarks or trademarks of Microsoft
Corporation. No associations are implied. Garmin 38 and Garmin GPS
2 Plus are registered trademarks or trademarks of Garmin
Corporation.
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