Grass Valley CRSC v.3.2 - Manual (Page 126)

114
Tutorials
Cabling
errors should take only a small fraction of a second to execute. Under normal conditions, a
typical salvo executes in a few milliseconds.
Salvos are not affected by the state of level buttons.
Cabling
Compact routers and control panels are professional- or industrial-grade products. Although
they are small and relatively inexpensive, they are actually designed to be used in broadcast
systems and professional video editing. They can also be used in conference rooms, digital
cinemas, and other facilities.
Routers and control panels are just one part of a system that may include DVDs, VTRs, Monitors,
A/D converters, D/A converters, and so on. To connect all these devices you will need cables and
connectors. Whatever your application, it requires high-quality cables of various kinds and
certain tools to prepare cables of the right length.
Cable Types
There are many cable types. In a compact router system, cables differ primarily by connector
type. Most of Grass Valley’s compact routers have BNC connectors.
Length limits are as follows:
• SD — Belden 1694A, BNC, up to 350 m at 270 MB/s (1312 feet)
• HD — Belden 1694A, BNC, up to 150 m at 1.485 GB/s (492 feet)
• 3Gig — Belden 1694A, BNC, up to 100 m at 2.97 GB/s (328 feet)
• AV — Belden 8281, BNC connectors, up to 1000 feet.
• AA — Belden 8451, DB25 connectors (each supports 8 shielded twisted pairs), to 1000 feet.
See DB25 Connectors on page 115. Grass Valley’s WC0053 breakout cable can be useful with
DB25 connectors.
• Machine control — RJ-45 connectors, cable length to 100 m with high-quality cable. machine
control routers often connect to machines (VTRs, for example) that have DE9 serial connec-
tors. If that is your case, you will have to fabricate a DE9-to-RJ45 cable. (Grass Valley’s BP-
PORT-64 breakout panel can be of some use here.) See
RJ-45 Connectors on page 115.
• Ethernet — RJ-45 connectors, cable length to 100 m with CAT5 or CAT6 cable. Beyond 100 m,
you will probably experience some packet loss or degradation in speed.
Connectors
Serial Connector
The automation connector for all CR Series routers and remote panel modules has this pinout:
The connector is RS-485, but can be used as RS-422.
5
1
6
9
Gnd
TX–
RX+
Gnd
n.c.
Gnd
TX+
RX–
Gnd