Lpm» Function; Batteries - Vokkero Evolution 3 Notice D'emploi

• Four bias values (Mic. bias) can be accessed: 0 Ohm, 680 Ohms, 2700 Ohms, 5400
Ohms.
• Forty-four micro gain values can be accessed: from -12 dB to 32 dB (note: the value
33dB corresponds to mute).
• Thirty-two LS gain values can be accessed: from -12 dB to 20dB (note: the value 21dB
corresponds to mute).
• Five echo cancellation values (AEC settings) can be accessed: Off, AEC1, AEC2, AEC3
and LPM (cf. next section)
IMPORTANT: changing the values may signifi cantly degrade the audio quality of your equip-
ment if it is not done carefully.
(1) automatic detection is operational on accessories equipped with a ring indicating their
bias value. This ring can be found on the cable, close to the connector.
Procedure:
• In the Adv. settings menu, select Headset settings using «+» or «-».
• Press «OK» to confi rm your choice.
• Choose the Manual function using «+» or «-». Press «OK» to confi rm your choice.
• Select the bias value. Press «OK» to confi rm.
• Choose the microphone gain value. Press «OK» to confi rm.
• Choose the LS gain value. Press «OK» to confi rm.
• Choose the echo cancellation value. Press «OK» to confi rm.
• Press «Menu» to return to the home screen.
5.6. « LPM» fonction
As explained above, «LPM» mode can be selected from the AEC settings menu.
This function allows you to use accessories, the microphone and LS of which are close
(such as audio desks or drive-in terminals), while avoiding the characteristic echo pheno-
mena of this type of accessory in full-duplex mode.
This function progressively cuts the microphone input (up to 78 dB of attenuation) when
audio data appears in the LS and progressively re-establishes microphone input gain on the
disappearance of audio from the LS.
Once selected, this function is displayed on the home screen.
Note: please note, this LPM function must only be used on a single device in the system.
Activating AEC LPM on several devices in a system may cause communication to cut out.
6.

Batteries

Depending on the version, several types of batteries are offered with the Vokkero terminal:
ARF7668 AB / DB / DQ / ED:
Audio conference system with a 3.7 V 1130 mA/h battery
Operating temperatures:
ARF7668 AO / DO / DP
Audio conference system with a 3.7 V 2260 mA/h battery
Operating temperatures:
It is possible to recharge the battery before it runs totally fl at.
Subject to normal temperature and operating conditions, the charge time for the 1130 mAh
battery is 3 to 4 hours and it is 5 to 6 hours for a 2260mAh battery that is completely fl at.
It offers approximately 6 hours of independent operation in the case of the 1130mAh version
and 12 hours in the case of the 2260mAh version.
207666A-V1.4-UG-VOKKERO-EVOLUTION3
-10 / +50°C
-10 to +50°C
GB
33