displaye d on the designated main monitor #1. If there are
multiple alarm signals, the alarm videos w ill be switc hed to
the Monitor # 1 one by one. The system can store the alarm
status. Even the alarm signal is disconnected, if the user does
not respond to the alarm, the alarm status still exists. If the
alarm signal exists all the time, even the userresponds to the
alarm the alarm status cannot be cleared, but the monitor
will not display the alarm video.
2)
AUTO-BUILD MODE: the designated main Monitor #1 and #2
will display the alarm videos. Whe n multiple alarm signals
exist simultaneously, the signals will be separate d into two
groups to be displayed on the monitorsseparately. The alarm
vide o display on each m onitor are similar to that of B asic
Mode. The system can store the alarm status. Eventhe alarm
signal is disconne cted, if the user does not respond to the
alarm, the alarm status still exists. If the alarm signal exists all
the time , eve n the user responds to the alarm the alarm
status cannot be cleared, but the monitor will notdisplay the
alarm video.
3)
SEQUENCE DISPL: the designated main Monitor #1 and #2 will
display the alarm videos. When multiple alarm signals exist
simultaneously, the Monitor #1 will display the first alarm video
that is not responded to. Whenthe first alarm is responded to
, the Monitor #1will display the second alarm that is not done
so. While monitor#2 displays circularly all the alarm videos
that are not responded to . Eac h alarm video has a dw ell
time of 1 second. The system can store the alarm status. Even
the alarm signal is disco nnec ted, if the user does not re-
spond to the alarm , the alarm status still e xists. If the alarm
signal exists all the time, even the user responds to the alarm
the alarm status can not be cleared, but the monitor will not
display the alarm video.
3.13 Alarm Clearance
There are two modes of alarm clearance: automatic clear-
anc e and manual clearance . The modes can cause the
system to exit the alarm event status and return to the work-
ing status before the alarm event. The system master can
authorize any keyboard (user) the right to clear an alarm. The
unauthorized keyboard does not have the right. After clear-
ing a alarm, the user will not hear the alarm sound. If the
alarm event still exists, the ARM word in the alarm status dis-
play column on the monitor flashes.
1)
Automatic clearance (after the alarm co ntact points be-
come disconnected or connected for 20 seconds, the sys-
tem will clear alarm automatically): after the alarm contact
points become disconnected for 20 seconds,the alarm video
will disappearfrom the monitor automatically. By this mode,
any alarm video can be caught on time. After the first alarm
vide o is cleared from the monitor, the next alarm vide o is
display ed on the monitor. Under the automatic clearance
mode, the user can also clear the alarm manually.
2)
Manual clearance: under the manual clearance mode, the
alarm video remains on the respondent monitor untilthe user
visits the monitor through the keyboard. The master can set
and authorize any keyboard the right to clear alarms; unau-
thorized keyboard can not clear the alarms.
3.14 Lock Functions
To reinforce the safety and reliability, the system sets lock
functions spe cially. They are to limit the control scope of
keyboards to monitors and cameras. They are two modes:
1)
Lock cameras to keyboards: setwhich keyboardcan control
which cameras;
2)
Lock monitors to keyboards: set which keyboard can control
which monitors.
3.15 Receiver
The system sends control signals to receiver through RS-485.
Receiving the signals, the receiver translates the commands
to control the operations of camera, Pan/Tilt, Lens and light.
3.16 Keyboard Controller
The system can connect 8 keyboards and 1multi-media PC
controller, including all- functio n main keyboard contro ller
with m enu programm ing, multi-m edia PC controller and
auxiliary keyboards.
3.17 Variable Speed Joystick Control
The joystick can contro l constant or variable speed Pan/Tilt
and Dome camera. User can also use joystick to select items
when editing programs.
3.18 Impedance Switch of Video
Input Impedance switch for video input: all video inputs have
been connected to the terminal impedance s with high or
low ohm on the matrix mainboard. By using the DIP switch in
the matrix user can se lect the high or low impedance for
each video input.
3.19 Dome Camera Phase Setting
If the cameras are out of phase, vertical roll on monitor ap-
pears when user switches between cameras.The phase set-
ting isused to setthe cameras in phase so that verticalroll on
monitor can be eliminated.
3.20 Storage and Memory
The system can store the latest 5 turning on time and turning
off time, alarm arming time, alarm disarming time, alarm
time, alarm events, and alarm clearance.
3.21 Multi-media Control
The system can connect PC through a RS232 port to transmit
the inform ation to the PC. The PC is a wholly new controller
apart from the keyboard.
3.22 Communication Ports
The system provides eight groups of RS-485 BUS to connect
receivers, four 6-pin RJ-11 ports to connect keyboards, and
a RS232 port to connect PC.
3.23 Ports and Connectors
1)
Video Input and Output: standard BNC connectors.
2)
Looping Video Connection: two 34-pin flat cable ports.
3)
Keyboard: four 6-pin RJ-11 ports to connect keyboards.
4)
Alarm Input and Output: 32 inputs throughremovable screw
terminal blocks. Four Normal open/Normal close relays out-
put alarm signals.
5)
RS-232 port: 9-pin D-Sub ports to c onnect PC. The ¡¡stored
information in Matrix can be transmitted to PC. At the same
time, PC can control the whole system instead of keyboard.
6)
RS-485 port: remo vable screw terminal block to c onnect 8
groups of 485 BUS that control all the dome cameras.
