24
Alarm Function and a Reset Switch

System Example

Refer to the following system example when connecting a sensor or a security control door with a reset switch.
ALARM IN
TRIGGER OUT
RESET4321G4321GGV+–G

About the Reset Circuit

Vc
R
Vf
10mA
+5V
When isolating the power source (procured locally)
It is suitable if the reset circuit is installed in a distance from
the MPEG2 encoder and it is under the influence of noise.
When supplying the power from the MPEG2 encoder
It is suitable if the reset circuit is installed near the MPEG2
encoder such as in the same rack and the connection
distance between them is short.
V
+
–
G
RESET
Reset Switch
l
To the reset circuit
of a microcomputer
+5V
V
+
–
G
RESET
Reset
switch
To the reset circuit
of a microcomputer
Reset output of
an other device
Short-circuit
• Open collector or non-voltage make contact
• Low Active (less than 0.2 V)
• Voltage endurance (more than 10 V DC)
Sensor
Security control door
TRIGGER OUT 1
(Interlocking with
ALARM IN 1)
Reset Switch
(For restarting the MPEG2 encoder)
Alarm Input 1Alarm Input 2
On the rear panel of
the MPEG2 encoder
Short-circuit "V" and "+" when supplying power from
the MPEG2 encoder to the reset circuit.
Reset Circuit
Relay 1*
Security devices
(Warning light, etc.)
1*: Install a relay according to your needs.
CONNECTIONSCONNECTIONS