Yaesu FT DX 9000MP CONTEST - DATA MANAGEMENT..., Руководство по эксплуатации

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Page 85 FT
DX
9000MP O
PERATION
M
ANUAL
TTTTT
OOLS OOLS
OOLS OOLS OOLS
FOR FOR
FOR FOR FOR
C C C C C
OMFOR OMFOR
OMFOR OMFOR OMFORTTTTTABLE
ABLE
ABLE ABLE ABLE
AND AND
AND AND AND
E E E E E
FFECTIVE FFECTIVE
FFECTIVE FFECTIVE FFECTIVE
R R R R R
ECEPTION ECEPTION
ECEPTION ECEPTION ECEPTION
A
UDIO
F
ILTER
O
PERATION
The left [ FILTER
(
A
)] switch on the
FPS-9000H allows adjustment of the left speaker audio response, while the [ FILTER
(
B
)]
switch on the
FPS-9000H
allows tailoring of the right side speaker’s audio response.
The optimum filter setting will depend on the operating mode and band/noise conditions. For example:
SSB operation
Setting the HIGH CUT filter to 2.4 kHz will cause audio
components above that frequency to be attenuated at a rate
of –6 dB per octave. This will cut high-pitched noise, and
give the audio a more mellow sound.
CW operation
Setting LOW CUT to 500 Hz, and HIGH CUT to 700 Hz,
will create a bandpass filter with its peak at 600 Hz.
AM and FM operation
You will want to begin operation in the “NORM” (Nor-
mal) position, corresponding to the widest fidelity avail-
able. If specific noise or interference should arise, try en-
gaging one or both of the filters.
See the charts for further information about the typical
response curves for these highly useful filters, which
oftentimes can significantly enhance reception.
N N N N N
O O O O OTE TE TE TE TE
It is possible to mute the audio from the
speaker(s), if desired; see page 40.
To mute the audio from the Main receiver (left
speaker), press the [
MUTE
(
A
)] switch. To mute
the audio from the Sub receiver (right speaker),
press the [
MUTE
(
B
)] switch.
FILTER A
[LOW CUT] Switch
FILTER A
[HIGH CUT] Switch
FILTER B
[LOW CUT] Switch
FILTER B
[HIGH CUT] Switch
NORM
300
500
700
1k
2.4k
NORM
The audio filter is disabled.
Audio below 300 Hz is attenuated at a rate of -6 dB/octave.
Audio below 500 Hz is attenuated at a rate of -6 dB/octave.
Audio above 700 Hz is attenuated at a rate of -6 dB/octave.
Audio above 1000 Hz is attenuated at a rate of -6 dB/octave.
Audio above 2400 Hz is attenuated at a rate of -6 dB/octave.
The audio filter is disabled.
LOW CUT
HIGH CUT
Audio Filter Frequency Response
A A
A A A
D D D D DVICE VICE VICE VICE VICE
It is possible to combine the speakers’ audio out-
puts, so as to enhance the tonal fidelity from bass
through treble; see page 40.
Pressing the [
OUTPUT
(
B
)] switch (once the
“[A+B]” switch has been pressed) will combine
the audio from the two speakers, effectively dou-
bling the total speaker aperture.