Becker AR620X - Page 64

Installation
Configuration Setup
64 Transceiver Family 620X DV14307.03 Issue 04 March 2016
Display Contents
Description
"DYN MIKE SENS":
The sensitivity of the Dynamic Mike, "DYN MIKE SENS", input is
adjustable within a range of 0.5...25 mV by turning the "ROTARY
ENCODER".
17 dB 3.5 mV
VU
DYN MIKE SENS
Note: This page is only
displayed if :
Dynamic input is selected
in IN/OUT CFG1 and
MIKE_SW input pin status
is [Inactive]
or
Dynamic Mike input is
selected in IN/OUT CFG2
and MIKE_SW input pin
status is [Active].
The factory setting is 3.5 mV.
When speaking normally into the microphone the bar graph should
remain within the recommended predefined range
Note: The microphone sensitivity shall be adjusted to achieve a
correct modulation by keeping the cockpit noise suppression as
high as possible.
If the sensitivity is adjusted to a smaller value (e.g. 1 mV) the cockpit
noises may become louder than for a higher adjustment (e.g. 25 mV).
Otherwise, adjusting the sensitivity to a very high value (e.g 25 mV), the
cockpit noise is significantly reduced but the modulation of the
transmitter may not be sufficient.
The installer shall perform a communication check after modification of
this parameter. Recommended is to perform this check with and without
a running engine.
Note: Menu available on primary controller.
For installations with high interferences it is recommended to use
sensitivity level 2...25 mV.
"SPKR VOL SRC":
One of the three following options may be selected for speaker volume
source, "SPKR VOL SRC", by pressing the "STO" button:
SPKR VOL SRC
RY CH
RY CH
PRIMARY CH
If "PRIMARY CH" is selected the speaker volume will be adjustable by
AR6201-(X0X).
SECONDARY CH
If "SECONDARY CH" is selected the speaker volume will be adjustable
by RCU6201.
BOTH
If "BOTH" is selected the speaker volume will be adjustable by the
arithmetic average value from AR620X and RCU6201.
Note: Menu available on primary controller.
If optional second controller (RCU6201) is not available then SPKR
VOLUME SOURCE shall be set to the PRIMARY CH
"SQUELCH THR":
The noise squelch threshold "SQUELCH THR" is adjustable within a
range of 6...26 by turning the "ROTARY ENCODER".
6
SQUELCH THR
Minimum Adjustment of 6 means:
Weak RF signals can trigger the Squelch threshold and the voice signal
might be low combined with a noisy background.
Maximum adjustment of 26 means:
Only strong RF signals will trigger the Squelch threshold. The voice
signal will be audible very clear with very low background noise.
Weak RF signals may not trigger the Squelch threshold and therefore
the audio may not be heard by the pilots.
Note: Adjustment of the "SQUELCH THR" is available via the
user menu at any time.