User manual

11
Network
You can connect the 7700 Series unit directly to a 10/100 Base-T network or via a hub. Use a standard UTP
Category 5 cable with RJ45 connectors.
– Connect the unit to the network using the Ethernet jack.
Alarm inputs
The 7700 Series unit has two alarm inputs on the orange terminal block. The alarm inputs are used to transfer
signals from external alarm devices, such as door contacts or sensors. Given the appropriate configuration, an
alarm device can, for example, trigger automatic connection between an encoder and a decoder in a remote
location. A voltage free normally open contact or switch can be used as an actuator.
Note
It is preferable to use an actuator with a bounce-free contact system.
– Connect the leads to the appropriate terminals on the orange terminal block and check that the connection
is secure.
Relay output
The 7700 Series unit has a relay output for switching external devices, such as lights or audible alarms. This
relay output can be activated manually if there is an active connection with the 7700 Series unit. Moreover, the
output can be configured to activate audible alarms or other devices as a response to an alarm signal. The
relay output is also located on the orange terminal block.
Warning!
The maximum rating of the relay contact is 30 V and 1 A.
– Connect the leads to the appropriate terminals on the orange terminal block and check that the connection
is secure.
Microphone/loudspeaker
The connection for the microphone/loudspeaker is also on the orange terminal block.
The bidirectional audio signals are transmitted simultaneously with the video signals. This can be used, for
example, to operate a loudspeaker or door intercom at the target location.
– Connect a line level audio source to the appropriate terminals on the orange terminal block of the transmitter
and check that the connection is secure.
– Connect a loudspeaker to the appropriate terminals on the orange terminal block of the receiver and check
that the connection is secure.
Switching on/off
Power Connection
The 7700 Series unit can be connected to power from two different locations on the casing.
– Connect one wire to the + terminal and one wire to the - terminal of the terminal block.
– When using a power brick with a wiring harness, connect one of the harness’s 2-block output connectors to
the corresponding power input on the opposite side of the 7700 unit casing as the orange terminal block.
Warning!
Take appropriate measures to ensure that the power supply is protected against voltage surges, spikes,
and brownouts.