Glossary-4
7500 Series Instruction Manual
Flag
A parameter that can be set in a control panel
template to control how the panel operates.
Flash Memory
See:
Flip-Flopping
Alternately connecting each of two different
Sources to a single Destination (at a designat-
ed switching rate (See:
GBR (Green, Blue & Red)
The three primary colors used in video pro-
cessing, often referring to the three un-en-
coded outputs of a color camera. The
sequence of GBR indicates the mechanical
sequence of the connectors in the SMPTE
standard. Also see: RGB.
GPI
General Purpose Interface. Refers to the HX-
GPI or Horizon General Purpose Interface
used to connect a Horizon Routing Switcher
to a Series 7000 System.
GSC
Global Serial Channel. Refers to the GSC
Mezzanine which provides additional BNC,
serial communications ports for the Series
7000 MCPU. The four additional BNCs pro-
vided per mezzanine can be used as addi-
tional control panel bus or Tally System
ports. The GSC can also be used to provide
Node Control Bus expansion. In this capaci-
ty, only one of the four BNCs can be used be-
cause traffic density is too great for all four
BNCs to be serviced by a single communica-
tions controller.
GUI
Graphical User Interface. Refers to the Con-
figuration Editor software program used to
configure the Series 7000 System.
Hardware
1. Electrical devices connected through phys-
ical wiring. 2. Electronic programming tech-
nique using physical connections and
therefore essentially unalterable.
HDTV
Television with a resolution approximately
four times that of Conventional Definition
Television and a 16:9 (H x V) picture aspect
ratio.
Heartbeat
A health status message provided by net-
worked frames that are polled by MCPUs.
Horizon
A Grass Valley line of routing switchers.
HX
Grass Valley Horizon Series Crosspoint
Routing System.
IBOP
Interconnect /Break Out Panel. An option
panel used to add BNC connectors to an au-
dio matrix using 50-pin D connectors.
ID or IDENT
A software routine that identifies a device
(e.g. a control panel). Includes such informa-
tion as:
• controlled Destination
• active tally level
• panel name
• software version
• system name
I/O
Abbreviation for input/output. Typically re-
fers to sending information or data signals to
and from devices.
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