Audio Output - Axis 211M User Manual

Audio Input
Audio from a connected microphone or a line source can be connected to the Audio in connector of the AXIS
211M. The audio source must be set to Microphone or Line depending on the connected device.
Note:
To prevent unauthorized listening, the internal microphone can be disabled by inserting a plug in the Audio in connector.
The Enable microphone power option provides DC power for an external microphone. If using a small electret
microphone such as a clip-on mic or a PC microphone, this option needs to be enabled.
Note:
To use a high impedance dynamic microphone, DC power should not be enabled. DC power will not harm the microphone, but if you are
uncertain, try switching it off and on. The default value is DC power enabled. To use a professional microphone requiring 48V phantom
power, you need an external power supply and must use a balanced-unbalanced converter (audio transformer) in between.
Set Input sensitivity to High or Low depending on the sound level in the monitored are. For example, if the
AXIS 211M is installed in a noisy environment set the sensitivity to Low. When using an external microphone
set the Input sensitivity to High if you are using an ordinary, unamplified microphone. Set the sensitivity to
Low if the connected microphone has a built-in line amplifier.
Enable microphone power with electret microphones that have no battery. Do not use this setting with a
dynamic or battery powered microphone.
Select the desired audio Encoding format G711, G726 or AAC.
Depending on the selected encoding, set the desired Bit rate (audio quality). The settings depend on the
available bandwidth and the required audio quality, i.e. a high bit rate setting requires more bandwidth.
The AXIS 211M can be set to trigger an event if the incoming sound level rises above, falls below or passes the
set value. The Alarm level is set between 0-100%.

Audio Output

If the sound from the speaker is too low or high, adjust the output gain for the active speaker attached to the
AXIS 211M. When satisfied with the settings, click Save, or click Reset to revert to the previously saved
settings.
AXIS 211M - Audio Settings
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