2N Helios IP Video Kit - Manual (Page 16)

16
2N TELEKOMUNIKACE a.s., www.2n.cz
®
Connection of External Microphone
2N
®
Helios IP Video Kit is equipped with an input for connection of an external
electret microphone on the MIC+ and MIC- terminals.
Connection of External Amplifier
2N
®
Helios IP Video Kit is equipped with a line output for connection of an external
power amplifier on the LINE OUT+ and LINE OUT- terminals.
Connection of External Audio Source
2N
®
Helios IP Video Kit is equipped with a line input for connection of an external
audio signal source (FM tuner, MP3 player, e.g.) on the LINE IN+ and LINE IN-
terminals.
Connection to Relay Output
is equipped with one galvanically isolated relay switch with N/O and N/C contacts on
the NC, NO and COM terminals. The relay function is programmable; refer to the
for details. Configuration manual 2N® Helios IP
Connection to Digital Outputs
2N
®
Helios IP Video Kit is equipped with two active 12V/650mA outputs on the
OUT1+- and OUT2+- terminals. The outputs are overload and short-circuit resistant.
The output function is programmable; refer to the
2N Helios IP Configuration
®
for details. Manual
Caution
Never connect a loudspeaker with impedance lower than 4Ω to avoid
system damage.
Never exceed the maximum power output designated for the loudspeaker
to avoid loudspeaker destruction. Choose a loudspeaker with proper
impedance and maximum power values, or limit the maximum volume
level in the device configuration.
Caution
Undesired noise may be heard in the earphone where EMI affects the
microphone signal. To avoid this, connect the microphone using a shielded
cable of the minimum possible length.
Warning
Do not exceed the voltage and current limits for the load connected to the
relay contacts as specified in the technical parameters of the device to
avoid device damage.