Yaesu FTDX-9000MP, Руководство по эксплуатации

Страница: 78 / 180

Page 76 FT
DX
9000MP O
PERATION
M
ANUAL
D
IGITAL
N
OISE
R
EDUCTION
(
DNR
)
O
PERATION
The Digital Noise Reduction (DNR) system is designed to reduce the level of random noise found on the HF and 50 MHz
bands, and it is especially effective during SSB operation. By rotating the [
NR ] knob, any of sixteen different noise-
reduction algorithms can be selected; each of these algorithms was create for dealing with a different noise profile, and you
will want to experiment with the DNR system to find the best setting according to the noise currently being experienced.
M
AIN
B
AND
(VFO-A) DNR O
PERATION
1. Press the Main (VFO-A) band’s [
NR
] switch. The LED
imbedded in the switch will glow Red, confirming that
the DNR system is engaged.
2. Rotate the Main (VFO-A) band’s [ NR ] knob to select
the setting that most effectively reduces the noise level.
To disable the DNR system, press the Main (VFO-A)
band’s [
NR ] switch once more. The imbedded LED will
turn off, confirming that the DNR system is not active.
IIIII
NTERFERENCE NTERFERENCE
NTERFERENCE NTERFERENCE
NTERFERENCE
R R R R R
EJECTION EJECTION
EJECTION EJECTION
EJECTION
(S(S(S(S(S
IGN IGN IGN IGN IGNALS ALS ALS ALS ALS WITHIN WITHIN WITHIN WITHIN WITHIN
3 3
3 3 3
KHZ KHZ KHZ KHZ KHZ
)))))
[NR] Switch
[NR] Knob
[DNR] Switch
[DNR] Knob
VDD TEMP SWR BIAS
S
UB
B
AND
(
VFO-B) DNR O
PERATION
1. Press the Sub (VFO-B) band’s [
RX
] switch to engage
Dual Receive operation.
2. Press the Sub (VFO-B) band’s [
DNR
] switch. The
LED imbedded in the switch will glow Orange, con-
firming that the DNR system is engaged.
3. Rotate the Sub (VFO-B) band’s [ DNR ] knob to select
the setting that most effectively reduces the noise level.
To disable the DNR system, press the Sub (VFO-B) band’s
[
DNR ] switch once more. The imbedded LED will turn
off, confirming that the DNR system is not active.
A A
A A A
D D D D DVICE VICE VICE VICE VICE
The Sub band (VFO-B) frequency display will show
the current noise reduction parameter for 5 seconds
whenever the [
NR
] / [
DNR
] knob is turned.
You may disable this feature (displaying the cur-
rent noise reduction parameter) via Menu item
“
DISPLAY 022 LEVEL INDICATOR .” See page
148 for details.