BRAVE
– user guide
43
Parametr Value
Description
Default
76
b
Level of microphone start 1-4 (4 is highest)
3
On the line is simultaneously signal from microphone and speaker. In handsfree
circuit is a few functional blocks to suppress acoustic shock. The basic one is
circuit of semiduplex operation when incoming signal decrease microphone
amplificatio as same as signal from microphone decrease incoming signal. The
level of microphone start is setup by this parametr.. As lower value as higher
microphone sensitivity is. In noicy environment we recommend higher value with
combination of parametrs 71,75, 77.
Parametr Value
Description
Default
77
s
Fast switching voice automatic 1-4 (4 is
slowest)
2
At parametres 75, 76 is descriped principal of acoustic shock supression. Speed
of circuit switching between incoming and outgoing sound is setup by parametr
77.
Parametr Value
Description
Default
78
l
VoltAmper (VA) charakteristic of line
connection (0/1)
1
Almost every country around the world has different telephone directives and this
parametr allows decrease voltage at door intercom line interface about 1V during
OFF HOOK. Where directive requires decreasement of line voltage
I=0
decrease
voltage about 1V. In default
l=1
.
Switching time
[ms]
S
- dial
1
1
2
2
4
3
8
4
