Axis Communications AXIS 214 PTZ - Manual (Page 27)

27 AXIS 214 PTZ - Audio
• Half-duplex mode also transmits and receives audio in both directions, but only
in one direction at a time (with the help of the push-to-talk button). To speak,
press and hold the button (check that the microphone is not muted). When fin-
ished speaking, release the button to receive audio. The push-to-talk button is
configured from AMC. Half-Duplex mode is best if you only have limited band-
width available.
• In Simplex - AXIS 214 PTZ speaker only mode, the speaker connected to the
AXIS 214 PTZ will play audio, but no audio will be transmitted from the AXIS
214 PTZ to other web clients. This could be used to e.g. provide spoken instruc-
tions to a person viewed in the camera. This mode requires the use of the
push-to-talk button.
• Simplex - AXIS 214 PTZ microphone mode transmits audio only from the
microphone connected to the AXIS 214 PTZ to web clients. It will not receive
audio from other web clients. This can be used in remote monitoring, web attrac-
tions etc., to provide live audio, as well as video, of a monitored situation.
When using half-duplex, the Send the sound from the active client to all other clients
option transmits the audio signal from the client that is talking to all the other clients.
Audio Input
Audio from an external microphone or a line source can be connected to the Line/Mic In
socket of the AXIS 214 PTZ. The audio source can be set to Microphone or Line. If you are
using a microphone, the input sensitivity can be set to High or Low. See Technical
Specifications, on page 56 for the exact maximum levels.
The Enable microphone power option provides DC power for the external microphone. If
you use a small electret condenser microphone such as a clip-on mic or a PC microphone,
this option needs to be enabled.
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 on and off. 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.
If there are problems with the sound input being too low or high, adjust the input gain for
the microphone attached to the AXIS 214 PTZ.
Audio Output
If the sound from the speaker is too low or high it is possible to adjust the output gain for
the active speaker attached to the AXIS 214 PTZ.
When satisfied with the settings, click Save, or click Reset to revert to the previously saved
settings.