Simplex Ethernet Clock Bedienungsanleitung PDF herunterladen

NTP [Network Time Protocol]

Unit 4, 2-8 South St

Rydalmere, NSW 2116

T: 13 14 91

F: 1800 659 025

W: www.simplextime.com.au

NTP definition & Application

Document: NTP.doc Issued: October 2008

NTP FAQ & Resources

Q: How can NTP clock installations save time and money?

A: If your site has an existing or planned LAN/WAN infrastructure then the Ethernet clocks

using NTP protocol can simply be added as extra nodes

The alternative to using the existing LAN infrastructure is to run power and control cables to

each and every clock from the Master Clock Locations(s). This can be a costly exercise when

signal repeaters and installation labour costs are considered.

By using an existing LAN as a means to synchronize the clock system there can be substantial

installation savings in installing clock systems If you have a Local Area Network then the

infrastructure in already in place to access accurate

NTP Time at every LAN/WAN node.

Having all the clocks on a WAN/LAN now allows the installation engineers and maintenance

staff to quickly check clock status without necessarily having to visit each installed location

and possibly disrupt business activities or processes in that location. This then opens up the

possibility to monitor and detect faults automatically if suitable software is made installed.

Existing IT or computer knowledgeable maintenance staff can maintain and support the

clocks with little training, alternately the maintenance function can be outsourced to Simplex.

New or replacement Ethernet clocks can be installed by suitably qualified staff

Electricians should only be required when installing additional mains power outlets.

Note:

1. NTP does not affect Day Light Saving or Time Zone settings which need to be

configured for each clock.

2. The Ethernet clocks power must be derived from:

a. Local Battery

b. Local Mains Power

c. Power over Ethernet PoE (i.e. NTP + Power)

3. Local Government legislation may require telecommunications handling licenses for

installers.

If you have a Local Area Network already installed or planned then the infrastructure exists

to deliver accurate

NTP Time at every TCP/IP port in your organization. This allows NTP

based time clocks to utilize this existing LAN/WAN infrastructure.

The maintenance of UTC time is now automatic and does not require manual update.

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