AXIS Q7404 Video Encoder
Hardware Overview
Connectors and Buttons
For technical specifications, see
page 57
.
BNC Connector
Each video input is terminated using a coax/BNC connector. Connect a 75 Ohm coaxial video cable; the recommended maximum
length is 250 m (800 ft).
Note
If the video source is connected in parallel with other equipment using a BNC T adaptor, disable the input termination by
setting the 75 Ohm termination switch to OFF to avoid reduced image quality.
Network Connector
RJ45 Ethernet connector.
NOTICE
NOTICE
NOTICE
The product shall be connected using a shielded network cable (STP) or an optical fiber cable. All cables connecting the
product to the network shall be intended for their specific use. Make sure that the network devices are installed in
accordance with the manufacturer’s instructions. For information about regulatory requirements, see
Electromagnetic
Compatibility (EMC), on page 2
.
I/O Connector
Use with external devices in combination with, for example, tampering alarms, motion detection, event triggering, time lapse recording
and alarm notifications. In addition to the 0 V DC reference point and power (DC output), the I/O connector provides the interface to:
•
Digital output
– For connecting external devices such as relays and LEDs. Connected devices can be activated by the
VAPIX® Application Programming Interface, output buttons on the Live View page or by an Action Rule. The output will
show as active (shown under
System Options > Ports & Devices
) if the alarm device is activated.
•
Digital input
– An alarm input for connecting devices that can toggle between an open and closed circuit, for example:
PIRs, door/window contacts, glass break detectors, etc. When a signal is received the state changes and the input becomes
active (shown under
System Options > Ports & Devices
).
Power Connector
2-pin terminal block for power input. Use a Safety Extra Low Voltage (SELV) compliant limited power source (LPS) with either a rated
output power limited to
≤
100 W or a rated output current limited to
≤
5 A.
Audio Connector
The Axis product has the following audio connectors:
•
Audio in (pink)
– 3.5 mm input for a mono microphone, or a line-in mono signal (left channel is used from a stereo signal).
•
Audio out (green)
– 3.5 mm output for audio (line level) that can be connected to a public address (PA) system or an
active speaker with a built-in amplifier. A stereo connector must be used for audio out.
RS485/RS422 Connector
Two terminal blocks for RS485/RS422 serial interface used to control auxiliary equipment such as PTZ devices.
Control Button
The control button is used for:
•
Resetting the product to factory default settings. See
page 52
.
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