2N Helios IP Configuration Manual v2.8 - Manual (Page 39)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
5.3.2 Speaker
All the models are equipped with a speaker or power amplifier output 2N Helios IP
®
to which an external loudspeaker can be connected. Set the phone call and state
signalling volume control in this configuration section. The speaker volume settings are
closely associated with the microphone sensitivity parameters as explained below.
Set the intercom speaker volume and microphone sensitivity values in the Master
, and parameters. The values volume Phone call volume Microphone sensitivity
can be different for different intercom models as shown in the table below:
Model Master volume
Phone call
volume
Microphone
sensitivity
Vario
−6 db .. +6 dB (150
mW)
−6 dB .. +18 dB −6 dB .. +6 dB
Force/Safety
1W −20 dB .. +16 dB (1
W)
−6 dB .. +18 dB −6 dB .. +12 dB
Force/Safety
10W −20 dB .. +20 dB (10
W)
−6 dB .. +18 dB −6 dB .. +12 dB
Uni
−20 dB .. +16 dB (1
W)
−6 dB .. +18 dB −6 dB .. +12 dB
Verso −12 dB .. 12 dB (2 W) 6 dB .. +18 dB − 6 dB .. +12 dB −
The parameter controls the general loudness of the device, i.e. call Master volume
and signal volumes, for example. Set the values with respect to the noise level of the
surroundings. People tend to speak more loudly in noise environments than on quiet
places and so remember that the noisier the surrounding environment, the lower the
microphone sensitivity.
The parameter controls the reproduced phone call signal loudness. Phone call volume
Adjust the value if the current master volume is still insufficient for the given
environment. Values higher than +6dB may lead to some signal distortion without
substantially affecting the intelligibility of speech.
The parameter controls the integrated microphone signal Microphone sensitivity
loudness and affects the audibility of the intercom user. The microphone sensitivity
value is relative against the automatic microphone sensitivity setting in the Master
volume parameter.