Camera Command Network Units - Cnu-700 And Cnu-500 - Sony BVP-900 Series Product Information Manual

6
CONTROL SYSTEM
6-3. Camera Command Network Units - CNU-700 and
CNU-500
The CNU-700 and CNU-500 Camera Command Network Units are
designed as the technical 'nerve center' of a Star Shape Network
System where all commands such as 'All', 'Control Priority',
'Parallel/Mode', etc. are centralized and distributed to the respective
CCUs of the studio system. They are is furnished with an RS-232C
port to provide interface capability to external systems such as ISR
(Interactive Status Reporting), external PC or modem and robotics
control systems. They can be mounted in a 19-inch standard rack
(3U height for the CNU-700, and 1U height for the CNU-500).
Through the modem or PC, camera data file can be transferred from
a master camera in a studio to cameras at several remote sites during
a live broadcast.
By employing a RISC-based microprocessor in the CNU-700 and
CNU-500, the communication speed has been greatly improved.
Consequently, real-time control and instant response to MSU-700 or
RCP-700 Series commands have been made possible. With the
combination of one VCS-700 Video Selector with a CNU-700 or CNU-
500, each of six picture and six waveform monitoring video signals
can be handled (and expanded to 96 of each with eight CNU-700
units).
Through a CNU-700 or CNU-500, one RCP can control one CCU
while one MSU is able to control multiple CCUs. All units connected
to the CNU can easily communicate with each other. Because of this
useful new facility, simultaneous control of multi cameras, file
transfer between multi cameras and control from an external device
are now possible.
As a convenient tool for system set-up and maintenance, both MSU
control routing and CNU control assignment can be displayed on a
monitor.
Since the CNU is the nerve center of a system, it has a bypass facility
Number of Cameras connectable
Number of RCPs connectable
Multi MSU connectable
Multi VCS connectable
Other controller connectable
Programable with remote control
RS-232C connector for ISR
RS-232C connector for switcher etc.
REF. video in
Character out
Assignment between RCP and CHU/CCU
Power supply to RCP
Connect to previous generation's
command system such as CCU-370
Height
19-inch standard rack mauntable
Table 6-1 A comparison between the CNU-700 and CNU-500
31
to maintain communication between the CCUs and RCPs in the event
of a CNU malfunction or power loss. Therefore, even when the
power unit or AT board of the CNU-700 or CNU-500 has failed,
camera heads and CCUs can be directly controlled from the RCPs to
let program production continue.
As mentioned in Section 2, Total System, the cost versus
performance balance between the two types of Camera Command
Network Unit allows users to build up systems that meet their
application needs. The CNU-500 is suitable for applications with up to
six cameras, while the CNU-700 can be expanded to handle up to 12
cameras with use of the BKP-7930 optional expansion board.
Alternatively, with the BKP-7932 optional command conversion board
installed instead of the BKP-7930, the CNU-700 can operate with six
previous-generation CCU-370/355/350 units as well as six CCU-700A
or CCU-550 units. Sophisticated software design and high-speed
CPUs in both types of CNU ensure rapid system response in all
applications.
(a) High-speed data transmission rates
CNU to MSU/RCP/CCU: More than 500 Kbps (Approximately
50 times faster than earlier camera command systems)
Camera Head to CCU: 35 Kbps (Approximately 15 times the
speed of earlier analog camera systems)
(b) System configuration
Basic system: Up to six cameras with one CNU-700 or CNU-500
Expanded system: Up to 12 cameras with one CNU-700 with one
BKP-7930 optional board installed
Maximum system: Up to 96 cameras with eight CNU-700 units
(each with an BKP-7930 optional board installed) via I/O port on
the rear panel (four MSU-700 Master Set-up Units required).
CNU-700
Up to 6 cameras
Up to 12 cameras with BKP-7930 fitted
Up to 96 cameras with multi CNU connected
Up to 6 RCPs
Up to 12 RCPs with BKP-7930 fitted
Up to 96 RCPs with multi CNU connected
Yes
Yes
Yes
Yes
Yes
One
Two when BKP-7930 fitted
Yes
2
Free
Yes
"Yes, when BKP-7932 installed"
3 U
Yes
CNU-500
Up to 6 cameras
No
No
Up to 6 RCPs
No
No
No
No
Available with optional AUX connector
No
Yes
No
No
Yes
1
Fixed
No (But RCP can be powered from CCU)
No
1 U
Yes