Camera Command Network Units - Cnu-500/ 700 - Sony BVP-E10 Series Product Information Manual

4-3.

Camera Command Network Units - CNU-500/ 700

The CNU-700 and CNU-500 Camera Command
Network Units are designed as the technical 'nerve
centre' 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
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).
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 the MSU-700A/750 or
RCP-700 Series commands have been made possible.
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 -function, simultaneous control of multi
cameras, file transfers between multiple cameras and
control from an external device are now possible. As a
convenient tool for system set-up and maintenance,
MSU control routing ,CNU control assignment, and
other system information can be displayed on a
conventional picture monitor.
Since the CNU is the nerve centre of a system, it has
a bypass facility 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 HDCUs can be directly controlled
from the RCPs to let programme production continue.
As mentioned in Section 2, Total System, the cost
versus performance balance between the two types of
Camera Command Network Units allows users to build
up systems that meet their application needs. The
CNU-500 is suitable for applications with up to six
Table 4-3-1:A comparison between the CNU-700 and CNU-500
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
cameras, while the CNU-700 can be expanded to
handle up to 12 cameras with use of the BKP-7930
optional expansion board. By adding additional CNU-
700s and BKP-7930 expansion boards, a large system
of up to 96 cameras can be controlled.
(1) 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 analogue camera systems)
(2) 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 a BKP-7930 optional board
installed) via I/O port on the rear panel (four MSU-
700A/750 Master Set-up Units required).
(3) Character display
Information concerning the camera heads and CCUs
connected to the CNU-700 and CNU-500 can be
displayed on a monitor via the CHARACTER
connector. This includes:
• Camera settings
• System connection information
• Results of Auto set-up
• Self-diagnostics information
(4) Emergency feature
In the event of a problem with the CNU-700 and CNU-
500, turning their internal OPERATION switch to the
EMERGENCY position allows control signals from the
remote control panel to be directly connected to the
camera head. In this way, programme production can
continue by bypassing the CNU.
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
(RCP power is maintained when CCU is
switched off)
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 is powered from CCU)
No
1 U
Yes
Chapter 4 Control System
BVP-E10 Series Product Information Manual
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