3
The camera’s external I/O interface allows you to connect 2 devices (such as sensors, motion detectors, etc.) that can be used to trigger the camera’s image
buffering and transferring features (see Section 2 Using Triggers to Buffer and Transfer Images in the Operating Instructions on the CD-ROM).
The external I/O interface has 6 terminals.
You can connect an external microphone and external speaker to the camera to use the Listen and Talk features, respectively. For information about these
features, see 1.2.10 Audio Features in the Operating Instructions on the CD-ROM. You can also connect a TV or other video device (NTSC or PAL format) to the
camera to monitor or record camera images. Connect the devices as shown below.
Read the following information after setting up the camera according to the procedure described in the Setup Guide.
Connecting External Sensors
Circuit Diagram Example
Caution
• The external I/O interface is not capable of connecting directly to devices
that require large amounts of current. In some cases, a custom interface
circuit (customer-provided) may have to be used. Serious damage to the
camera may result if a device that exceeds its electrical capability is
connected to the external I/O interface.
• Low voltage/current circuits and high voltage/current circuits are used in
the camera circuit. All wiring should be performed by a qualified
electrician. Incorrect wiring could damage the camera and cause a fatal
electric shock.
• External devices connected to the camera’s output terminals cannot be
controlled in the event of a network error or failure. Keep this in mind when
connecting door locks, heat-emitting devices, or other devices that may
be dangerous if they cannot be controlled.
Terminal
Description
G
GND terminal.
1
External sensor input 1. The camera can be triggered by either an open
circuit or a GND short-circuit.
G
GND terminal.
2
External sensor input 2. The camera can be triggered by either an open
circuit or a GND short-circuit.
3
External device control output. Allows you to control an external device
using the output buttons in the camera’s operation bar (for example,
turning a light on or off).
• This terminal’s behavior can be changed (see 7.4 Controlling the
External Output Terminal in the Operating Instructions on the CD-
ROM).
• This terminal is an open collector circuit. The maximum drawing
current is the same as terminal 4. Do not exceed the voltage of the
terminal 4.
4
DC power output terminal.
• 10.5–13 V DC
• Maximum load drive is 100 mA.
Note
• Do not push strongly on the external I/O interface with the pointed object. The
external I/O interface may get stuck into the unit, and you may not be able to
use it.
Connecting Audio/video Devices
Note
• Analog video output is disabled by default. See 7.5 Controlling the Analog
Video Output Signal in the Operating Instructions on the CD-ROM for more
information.
• If you use an external microphone, excessive cable length or a poor quality
cable can cause degradation in audio quality.
• The microphone cable should be no longer than 7 m (23 feet).
• Use a speaker with a built-in amplifier. The speaker connects to the camera with a
stereo audio cable similar to that used by your PC. The output signal is mono.
• Make sure the camera and speaker are turned off when connecting or
disconnecting the speaker cable, otherwise noise may be heard from the
speaker.
• The external microphone input does not correspond to a line level. Audio may
be distorted when the line level is input. Audio distortion will be solved if you
insert the following circuits. Under no circumstance should high-level audio,
such as from a speaker, be connected to this input terminal. Doing so is likely
to damage the camera.
External I/O interface
Light
Door Sensor 1 (Alarm 1)
Door Sensor 2 (Alarm 2)
Relay
Camera
12 V*
2
3
4
G
1
G
*DC 10.5 V–13 V
Speaker cable
( 3.5 mm stereo mini plug)
Microphone cable
( 3.5 mm mini plug)
( 3.5 mm mini plug)
To TV
To speaker
To microphone
Video cable
For microphone (Plug-in power +3.3 V)
For speaker (Output impedance 560 line level)
For TV
Camera
Microphone Input
Audio Line
Out
Capacitor
Resistor
1 F
33 K
