Operation Manual

Axnes AS
Document number
Revision
Date
AX-PNG-UMAN-2017
Issue C
2020-Jul-09
Page 2-8
2.9 Adjusting headset volume
Depending on the headset/helmet connected to the BST30/35, the volume may be
individually set to preferred volume by using the volume up/down buttons. When the
BST30/35 is power off-on cycled, it will start up with a default volume setting.
2.10 VOX / PTT mode
The default headset mode can be set in the device configuration. If VOX is selected as
default, when a headset is connected to the BST30/35, it will by default be set to VOX mode.
It will remain in VOX mode until PTT mode is activated by pressing the PTT button on the
cable harness.
When the BST30/35 is in PTT mode, the default mode can be reactivated by disconnecting
and reconnecting the headset.
2.11 VOX sensitivity
Figure 2-1 VOX trigger level functionality
The BST30/35 has automatic VOX sensitivity. When starting the BST30/35, the VOX trigger
level starts at the VOX Min level (set in the menu). If the ambient noise level rises, the VOX
trigger level may adaptively increase. The VOX trigger level will not adapt to lower ambient
noise, and user intervention may be required. The maximum possible VOX trigger level is
limited by the VOX Max level (set in the menu).