Grass Valley Apex v.2.0 - Manual (Page 126)

128 APEX — Installation and Service Manual
Glossary
remote switcher
Non-Thomson distribution switcher under
Jupiter control.
repeater
Device for connecting two LAN segments.
retained level
see STICKY LEVEL .
reverse switching
In Jupiter systems, term used in RS-232/422/
423 data switchers where one level is used to
switch data from a controlling device (such
as an editor) to a controlled device (such as a
VTR); a second level is used to return data to
the controller. The return path is switched
automatically by the control system.
RS-422
EIA standard which defines the electrical
characteristics of balanced voltage digital in-
terface circuits. More rugged than the earlier
RS-232 standard, which employs unbalanced
voltages. This standard does not specify a
connector type. While the Jupiter VTR / con-
trol panel bus and CC 2010 matrix (cros-
spoint) bus are both based on the RS-422
standard, the VTR / control panel bus uses 9-
pin D connectors and the CC-2010 matrix bus
uses 15-pin D connectors.
RS-422 bus
see SERIAL BUS .
S
salvo
Single-command switching of source(s) to
multiple destinations.
SCP
Software Control Panel.
segment
Portion of a LAN. In 10B ASE 2 systems, a seg-
ment is limited to 185 meters and 30 nodes.
However, segments can be joined by repeat-
ers.
sequencing
Term used in connection with Jupiter for sin-
gle-command switching of one or more
sources to one or more destinations. With a
CP-3000 switcher control panel, each named
sequence can contain up to 25 switching
events.
serial bus
In Jupiter systems, term used for the inter-
face bus that connects VTRs and control pan-
els to a controller board such as a VM-3000.
Depending on how the bus is configured by
software, may also be referred to as Sony
bus, Ampex bus, ES
BUS , MPK bus, RS-422
bus, etc.
server
1. Hardware: a computer that provides
shared services to other computers over a
network; e.g., a file server.
2. Software: a program that provides data to
client programs in the same or other comput-
ers. In Jupiter systems, a “JNS server” (soft-
ware) is said to run on a “file server”
(hardware).
set
see CONFIGURATION SET .
single-bus control panel
Selects any source for 1 destination.
SMPTE
Society of Motion Picture and Television En-
gineers. URL: http://www.smpte.org.