Audio Output - Axis Q1942-E Bedienungsanleitung

AXIS Q1942-E Thermal Network Camera
Video and Audio
Note
An Axis multicable is required when connecting external audio equipment to the Axis product. See Axis multicable on page 56.
Note
If using unbalanced Line in a mono contact must be used. Signal on tip and ground on sleeve.
Select Microphone to use an external microphone or Line to use a Line in device, e.g. an audio mixer for multiple microphones
or a microphone with a built-in amplifier, as audio source.
Select the +30 dB microphone boost option to amplify the signal of the external microphone connected to the Axis product.
Microphone boost option is useful when a microphone's volume is too low and you want to increase it. This option is not available
when the Line source is selected
The Microphone power option provides DC power for an external microphone.
To use a professional microphone requiring 48V phantom power, you need an external power supply and a balanced-unbalanced
converter (audio transformer) in between.
Use the Input gain to control the volume of the audio input. If the sound is too low, choose a higher dB value, to amplify the
sound. If the sound is too high, choose a lower dB value. The Level bar gives a visual representation of the audio signal level in dB
relative to the full-scale input level.
• Green — the signal is at a good level.
• Yellow — the signal is becoming distorted.
• Red — the signal is distorted.
Use the Encoding option to select digital audio encoding format.
• AAC requires a license for both encoding and decoding. AAC is the least complicated and most widely used codec. If
achieving the best possible audio quality is a priority, AAC is the recommended codec to use. An AAC license is included
in the Axis product.
• G711 is an unlicensed standard codec that is useful when integrating audio into a VoIP system
• G726 is an unlicensed speech codec that is most commonly used within the security industry.
Note
The Sample rate defines the number of times per second the sound is sampled. A higher sample rate will provide better audio
quality, but also requires a greater bandwidth.
Set the required Bit rate depending on the selected encoding. A higher bit rate will give better audio quality. A lower bit rate
may have latency or delay, but will require less bandwidth.
For more information about these settings, please see the online help

Audio Output

An external speaker can be connected to the Audio-out connector (an active speaker with built-in amplifier is required for this). The
output can be connected to another amplifier with speakers. A stereo connector must be used for the audio out.
Configure the audio output settings under Video & Audio > Audio Settings.
Note
An Axis multicable (see Axis multicable on page 56) is required when connecting external audio equipment to the Axis product.
Output gain - Control the volume of the line audio output. If the sound is too low, choose a higher dB value. If the sound is
too high, choose a lower dB value.
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