Installation manual

User & Installation manual
VHF- Communication Transceiver
Doc.-Nr:
DE-3000-800100e
KRT2 & KRT 2A
Revision 4.0
20 of 45
MIC levels 10 and 11 are special settings for low microphone
levels like dynamic micro-phones often used in gliders.
10 is used for non-amplified Electret microphones with a 8 volt
supply voltage.
11 is for dynamic microphones only.
In the AUTO mode every minute the left microphone impedance
is measured. When using an Electret microphone and a dynamic
microphone is recognized, internal switchover to the dynamic
microphone type and vice will take place. When using a dynamic
microphone and an Electret microphone is recognized, internal
switchover to the Electret microphone type will take place.
Microphone type switch over always affects both microphone
channels.
The MIC submenu is left by pressing the AUD button.
Additional indications
Additional indications for test purposes
AGC: ..... HF receiver Automatic Gain Control
Ext: ..... External audio input voltage
Mic: dyn or
Mic: std
Indicates, which microphone type was selected either by the user or
recognized in the AUTO mode.