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WJ-MPU855 Central Processing Unit
Preface
The WJ-MPU855 CPU is the Central Processing Unit for the System 850 Matrix Switcher. The System 850 Matrix Switcher is a
CCTV surveillance system having multiple video inputs, multiple video outputs, and multiple control stations. The WJ-MPU855
is capable of controlling a maximum of 1 024 video input sources and a maximum of 256 video outputs, such as monitors, with
64 system controllers.
The WJ-MPU855 is a high-performance Intel X86 processor based computer running the OS-9 real time operating system
allowing you to build up a redundant system of duplicate CPUs.
Appearance
Front View
Rear View
q Operate Indicator (OPERATE)
Is on when the power of the WJ-MPU855 CPU is turned
on.
Note: The power switch of the CPU is located under-
neath the front panel.
Remove the front panel by removing two screws on
the panel.
w Reset Button (RESET)
The RESET button is recessed inside the front panel
hole to the right of the OPERATE indicator.
Press this button when the CPU rejects control from
outboard equipment.
e Fan Alarm Indicator (FAN ALARM)
Indicates the cooling fan status.
This LED lights when a temperature rise in the CPU is
detected. Turn the power off and refer servicing to
qualified service personnel.
r HDD (Hard Disk Drive) Indicator (HDD)
Indicates the hard disk drive status.
44
q
w
e
RESET
FAN ALARM
HDD
OPERATE
ACTIVE
t r
y
u
ETHERNET
GYGTEM
CAMERA
OTHER
CONTROLLER
CROSS POINT
OSD
SYSYTEM
(RS–485)
CONTROLLER
i
DATA 12
DATA 11 DATA 10
DATA 9
DATA 8
DATA 7
DATA 6
PERIFERAL INTERFACE (RS–232C)
3
2
1
Central Processing Unit WJ–MPU
!2
DATA 5
DATA 4
DATA 3
DATA 2
DATA 1
PARALLEL
REDUNDANT
RSATELLITE
CPU
MODE
NO
YES
STANDALONE
SATELLITE
SIGNAL
GND
o !0 !1
t Active Indicator (ACTIVE)
Indicates the system status of the CPU.
y Ethernet Ports (ETHERNET)
Exchange control data via Ethernet.
• SYSTEM CONTROLLER
This port is provided for controlling the 850 System with
the WV-CU850 system controllers. Up to 64 controllers
can be connected to this port through a hub.
Note: The total number of system controllers connect-
ed via RS-485 and Ethernet is limited to 64.
• CAMERA/CROSS POINT/OSD
This port is used to exchange control data between the
cages through a hub.
• OTHER
Reserved for future use.
u Controller Ports [SYSTEM CONTROLLER (RS-485)]
These ports are provided for controlling the 850 System
with the WV-CU350 system controllers. Up to 12 con-
trollers can be connected.
855
Central Processing Unit
125V 3.0A
AC IN
!3
!4
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