Sony BKPF-300, Руководство по эксплуатации

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5 (E)
Features and Control System of
the Routing Switcher
Simultaneous control of multiple signals with
the level setting
To simultaneously handle several types of signals,
each type of signal requires a different routing
switcher. These are known as levels. For example, a
VTR requires video, audio, time code, and remote
control signals for recording. To switch these signals,
these signals require video, audio, time code, and
remote routing switchers, respectively. You can set a
maximum of eight levels and different input and
output signal numbers for each level in order to
simultaneously control these levels.
Control using S-BUS protocol
In the routing switcher system, a control unit controls
signal switching using S-BUS protocol. S-BUS is a
protocol developed by Sony for control of a digital
routing switcher system. This protocol enables
communication between multiple routing switchers
and control units using one coaxial cable. A combined
total of 254 routing switchers and control units can be
controlled using S-BUS protocol. However, when this
selector board is used as the primary station, the
maximum number of controllable units is 31.
Features of an S-BUS System
An S-BUS control system transmits the control signals
among several routing switchers and control units that
are connected with one coaxial cable. In an S-BUS
control system, one switcher is designated as the
primary station, which controls the entire system, and
the remaining switchers and control units are
designated as secondary stations. Signal transmission
among the secondary stations is controlled by the
primary station.
The S-BUS control system has the following features.
•
LAN (Local Area Network) type control signal
transmission using a single 75-ohm coaxial cable.
•
Possible extension of the coaxial cable up to 500
meters when a BELDEN 8281 or equivalent cable is
used.
•
Possible connection and disconnection of a switcher
or control unit to the S-BUS line during normal
operations without turning the power off.
•
Control of multiple S-BUS lines and up to 254
switchers and control units (including the primary
station) from the routing switcher designated as the
primary station.
1)
•
Possible connection of a maximum of 128 routing
switchers and control units to one S-BUS line.
1)
•
Display of the errors detected through the self-
diagnose function on the terminal connected to the
primary station on the S-BUS line.
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1) When this selector board is used as the primary station,
the maximum number of controllable units will be 31.