GRASS VALLEY PERFORMER, Instruction Manual

Page: 18 / 182

xvi
Preface
Glossary of Terms
The terms defined below are used in this manual. We have listed
them here for your convenience.
AC coupled A method of connecting one circuit to another so as to trans-
mit the varying AC characteristics of the signal while blocking
the static (DC) characteristics.
address An identification tag for separate devices sharing a common
communications bus.
ASCII (American Standard Code for Information Interchange) – A
standard system used extensively in data transmissions, in
which 128 letters, numerals, symbols, and special codes are
each represented by a binary number.
ASCII string A group of letters, numerals, and/or symbols represented by
ASCII code equivalents.
audio follow video An operational mode in which audio and video channels are
tied together so that when the operator selects the video
source, the audio simultaneously and automatically switches
with the video.
baud rate In terms of bits, the number of bits per second transmitted in
a digital signal.
binary A base-2 numbering system using the two digits 0 and 1, as
opposed to the ten digits, 0 through 9, in the decimal system.
BPS (Button Per Source) A router control panel that has a designat-
ed button for every controlled source.
breakaway The source number of at least one level (video, audio 1, or au-
dio 2) is different from the source number of one or both of the
other levels.
bus A signal path to which a number of devices (control panels,
routers, etc.) are connected.
channel In routing switchers, a complete and independent signal path.
controlled destinations Outputs that are assigned to a specific control panel.
destination offset The addresses of the destinations controlled by a control pan-
el which have been incremented to a higher set of numbers.
destination The point to which a source signal is routed.