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3 answers

To save on what couldn't be explained any better than by professionals I have links for you:

Slave Clock http://en.wikipedia.org/wiki/Slave_clock
Master Clock http://en.wikipedia.org/wiki/Reference_clock
Satellite Synchronized Clock http://en.wikipedia.org/wiki/Radio_clock

I hope that answers the question.

2007-01-01 18:12:12 · answer #1 · answered by Anonymous · 0 0

MASTER CLOCK
# A system of 1588 clocks may be segmented into regions separated by boundary clocks. Within each region there will be a single clock, the master clock, serving as the primary source of time. These master clocks will in turn synchronize to other master clocks and ultimately to the grandmaster clock.
ieee1588.nist.gov/terms.htm

# A separate clock signal which is sent from a master device to all slaves to maintain tape position synchronization. In this process, the master clock device sends a signal from a dedicated word-clock output to a dedicated word-clock input on all slave devices over a separate cable, typically terminated with a BNC connector. ...
www.dilettantesdictionary.com/index.php

# The source of timing signals (or the signals themselves) that all network stations use for synchronization.
members.lycos.co.uk/ahsanshahzad/network_glossary.htm

SLAVE CLOCK:
* In telecommunication, a slave clock is a clock that is coordinated with a master clock. Slave clock coordination is usually achieved by phase-locking the slave clock signal to a signal received from the master clock. To adjust for the transit time of the signal from the master clock to the slave clock, the phase of the slave clock may be adjusted with respect to the signal from the master clock so that both clocks are in phase. ...
en.wikipedia.org/wiki/Slave_clock

Satellite Synchronized Clock
Abstract
A satellite disseminated time and date code is received and converted into local time signal and displayed. The ground stations scan a frequency spectrum for signals from geosynchronous satellites. Once found, the position and time information from the satellites is used to compute the correct local time.
http://www.google.com/patents?hl=en&lr=&vid=USPAT4287597&id=HpI5AAAAEBAJ&oi=fnd&dq=+Satellite+Synchronized+Clock

2007-01-05 04:14:07 · answer #2 · answered by raj k 2 · 0 0

From Wikipedia, the free encyclopedia

Slave Clock:

In telecommunication, a slave clock is a clock that is coordinated with a master clock. Slave clock coordination is usually achieved by phase-locking the slave clock signal to a signal received from the master clock. To adjust for the transit time of the signal from the master clock to the slave clock, the phase of the slave clock may be adjusted with respect to the signal from the master clock so that both clocks are in phase. Thus, the time markers of both clocks, at the output of the clocks, occur simultaneously.

In other areas, the term refers to satellite electrical clocks that operate remotely from an electrical pulse issued by a master clock. In the 19th and early 20th centuries, slave clocks were widely used throughout public buildings and business offices, and their remote operation was regulated by electrical signals sent by a centralized master clock.

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Master Clock

In telecommunication, the term reference clock has the following meanings:

1. A clock with which another clock is compared.

2. A clock, usually of high stability and accuracy, used to govern a network of mutually synchronized clocks of lower stability.

In other applications, the term refers to a master clock that is the timekeeping standard with which to regulate or compare the accuracy of other clocks, including slave clocks.

2007-01-02 02:18:55 · answer #3 · answered by arai 2 · 0 0

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