The Synchronizing reference article from the English Wikipedia on 24-Apr-2004
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Synchronizing

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In telecommunication, the term synchronizing has the following meanings:

1. Achieving and maintaining synchronism.

2. In fax, achieving and maintaining predetermined speed relations between the scanning spot and the recording spot within each scanning line.

Note: In the civilian community, the noun "synchronization " is preferred to "synchronizing."

Source: from Federal Standard 1037C and from MIL-STD-188