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3
CONNECTIONS (contd.)
3-3 Connecting signal input/output terminals
[CAM SW OUT] camera switching signal
output terminal
To control the camera switching timing from this unit.
CAM SW
OUT
COM
Reference: "3-2 Connecting more than one camera (using an
external switcher)" on page 10.
[ALARM RESET] alarm signal reset input
terminal
To stop alarm recording when a signal is received during
alarm recording.
ALARM
RESET
COM
Switch
[CLOCK RESET IN] clock reset input terminal
To set the clock to the master clock or other device's clock
using a signal from an external device.
External
master
clock
[EXT REC IN] external recording control signal
input terminal
Recording can be started, stopped or controlled with an
external signal.
EXT REC
IN
COM
Frame switcher's
camera switching signal
input
Vcc
Vcc: 5 V-12 V
CLOCK
RESET IN
COM
External control
device
[ALARM IN] alarm signal input terminal
Starts alarm or sensor recording when a signal is received.
ALARM
IN
COM
[HDD FULL OUT] HDD full-output terminal
Outputs a signal during recording when the hard disk is full.
HDD FULL
OUT
COM
* Signal output is possible only when menu switch <HDD
FULL OUT> is set to "ON" and <REPEAT REC> is not set
to "OFF".
[CLOCK RESET OUT] clock reset terminal
Outputs a clock reset signal. It is possible to set the clock of
the digital video recorders following this unit to that of this
unit in second unit.
Second digital
video recorder
This unit
CLOCK
CLOCK
RESET OUT
RESET IN
COM
External interface specifications example
Power supply
Control signal
GND
● Use each device rated for using situation.
Frame switcher/alarm sensor's
alarm output terminal
HDD full lamp
External
interface
Last digital video
recorder
CLOCK
RESET IN
COM
(Lamp, etc.)
Relay
COM
11
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