NTP100 – Rev 1.0.1 Dec-04
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RS-232 Terminal Configuration (specific to models NTP100-GPS and NTP100-OSC only)
The RS-232 configuration interface behaves identically to the telnet interface. To communicate with the NTP100 in this
manner connect any RS-232 terminal or PC serial port and serial terminal application to the DB-9 connector on the rear of
the NTP100 unit (labeled RS-232). A “straight-through” 9-wire cable should be used. The settings for the RS-232 port are:
9600 baud, 8 data bits, 1 stop bit, no parity. Consult the section entitled Telnet Terminal Configuration for details on how to
change configuration using the terminal interface.
NTP Client Information
Any computer system desiring to synchronize its time to the NTP100 server must incorporate an NTP client. A NTP client is
responsible for asking the NTP server for time/date information, or in some cases simply listening on the network for NTP
time broadcasts, then setting the internal time of the computer or device. NTP client applications come in a variety of
flavors, supporting different features, and with different levels of accuracy, fault tolerance, and reporting. Many are
inexpensive to license, or free.
Listing for NTP clients can be found at the NTP home page, http://www.ntp.org, as well as many shareware/freeware file
search engines.
Dimension 4
Operates in most Windows environments. Concise user interface, can be minimized to the system tray.
http://www.thinkman.com/
TimeSync
Operates in a Windows NT/2000 environment, and can run as a service.
http://www.intsoft.com
XNTP
XNTP is the commonly used Un*x distribution of NTP server/client software. XNTP is distributed with many Un*x
operating system packages, and is licensed for use without fee. The distribution can also be built for Windows operating
systems although it is generally not needed for the Windows 2000/XP platforms (see Win32Time below).
http://www.ntp.org
Win32Time (W32Time)
This application, somewhat based upon NTP, is a Microsoft-specific time synchronization service that is incorporated into
Windows 2000, Windows XP, and probably future Microsoft operating systems.
Only Windows server running as PDC (primary domain controller) can query an external NTP server to set time.
To configure a PDC computer running Win32Time to query an external NTP server, execute the ‘net time’ command from a
command prompt.
Configure the external NTP source:
Ø
net time /setsntp:xxx (where xxx is the name or IP address of an NTP server)
View the currently configured NTP source:
Ø
net time /query
A dissertation on configuring and deploying Win32Time in an enterprise network environment is beyond the scope of this
manual. Please refer to the documentation included with your Windows 2000/XP operating system for details. The
Microsoft Knowledge Base also contains a number of useful articles. Search on the ‘net time’ and ‘w32time’ keywords.
