Vaisala Spectrum 4.0 - Manual (Page 78)

Glossary
72
U–Z
Transfer The term used when the software makes a copy of the data contained in a
connected data logger. The transfer process creates a file on the PC but does
not affect or delete the data on the logger. Other terms commonly used to
describe the transfer process are download, upload, backup, or copy.
USB An acronym for Universal Serial Bus, a standard for connecting external
devices such as a mouse, keyboard, scanner, printer. USB offers many ben-
efits over serial and parallel port connections, including thinner and cheaper
cables, greater expandability (with the addition of a USB hub, a single USB
port can handle over 100 peripheral devices) and greater speed.
UTC An acronym for Universal Time Coordinated, UTC is a standard time com-
mon to every place in the world. Also known as Greenwich Mean Time (GMT)
and World Time. UTC is expressed using a 24-hour clock but can be con-
verted into a 12-hour clock (AM and PM). An absolute time reference that
does not rely on Time Zone information, UTC contrasts with Local time. UTC
and Local Time information is contained in Logger files and is used to form
the time base on logger graphs and data.
Zooming Enlarging a portion of an on-screen graph.