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e00_VDH_M814.book Page 66 Thursday, October 28, 2004 9:59 AM
APPENDIX
1. CONTROL TERMINAL SPECIFICATIONS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Terminal
Name
No.
1
RS-485A
RS-485
2
RS-485B
RS-485
3
C
Resistance ladder
4
REMOTE
connection
5
C
Normal open,
6
CLOCK ADJ IN
Low level active
Normal resistance
CLOCK ADJ
7
5V DC/57kΩ,
OUT
Low level active
8
C
SERIES REC
Normal open,
9
IN
Low level active
NON REC
Normal resistance
10
OUT/SERIES
5V DC/57kΩ,
REC OUT
Low level active
Normal open,
11
ALARM IN 1
Low level active
Normal open,
12
ALARM IN 2
Low level active
Normal open,
13
ALARM IN 3
Low level active
Normal open,
14
ALARM IN 4
Low level active
ALARM
Normal open,
15
RESET
Low level active
Normal resistance
16
ALARM OUT
5V DC/57kΩ,
Low level active
17
C
Open collector
WARNING
18
(500 mA),
OUT
Low level active
Open collector
DISK FULL
19
(500 mA),
OUT
Low level active
*1 Used for twisted-pair cable connection.
*2 Outputs SERIES REC OUT when OVER WRITE in REC MODE SET is
"OFF", and SERIES REC is "-1M", "-2M", or "-3M". Outputs NON REC
OUT when SERIES REC is "OFF".
*3 The following warnings are output:
Hard disk drive error
No input signal when VIDEO LOSS is ON.
Signal
Function
To RS-485 terminal signal
1
A*
To RS-485 terminal signal
1
B*
Common
Remote Control terminal
Common
Input for clock setting
Output for clock setting
Common
Input terminal used when
recording with multiple
digital video recorders
connected.
Output terminal used
when recording with
multiple digital video
2
recorders connected.*
Alarm input for channel 1
Alarm input for channel 2
Alarm input for channel 3
Alarm input for channel 4
Alarm reset input
ALARM OUT
Common
Warning output*3
Recording area full
warning
Fan error
Recording error
Connecting cables to the control terminals
Cable
Flat-blade screwdriver
(1) Push in the lock pin with a flat-blade screwdriver.
(2) Insert the cable.
(3) Pull out the lock pin with a flat-blade screwdriver. The
cable is now secured in place.
System controller connections
The connections for a system controller are shown below.
Insert a twisted-pair cable (sold separately) into the
RS-485A, RS-485B and C (ground) terminals on the rear
panel. Connect the RS-485A and RS-485B output to signal
A and signal B respectively of the system controller.
RS-485
A B C
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
To signal B
Twisted-pair cable
To signal A
Ground
System controller (sold separately)
Twisted-pair cable
Reduces signal interference caused by noise from other
cables.
For information about the system controller, contact your
local dealer.
RS-485
terminal
66
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