Yaesu FTdx5000MP, Руководство по эксплуатации

Страница: 68 / 148

Page 66 FT
DX
5000 O
PERATING
M
ANUAL
IF N
OISE
B
LANKER
(
NB
)
O
PERATION
The FT
DX
5000 includes an effective IF Noise Blanker, which can significantly reduce pulse noise like that caused by
automotive ignition systems.
VFO-A NB Operation
Press the [
A
] button (the button glows red), if needed
to enable VFO-A.
Press the [
NB
] button briefly to reduce
short duration
pulse noise such as from switching transients, auto-
mobile ignitions and power lines. The “ ” icon will
appear in the display to confirm that the Narrow-NB is
operating.
Press the [ NB
] button again to reduce
longer-dura-
tion man-made pulse noise . The “ ” icon will
blink for three seconds, and thereafter will appear con-
tinuously, to confirm that the Wide-NB is operating.
Rotate the ( VFO-A
)[
NB
] knob to the point where the
offending noise is best reduced or eliminated.
To end Noise Blanker operation, press the [ NB
] but-
ton once more. The “ ” (or “ ”) icon will
turn off, confirming that the Noise Blanker is no longer
in operation.
I
NTERFERENCE
R
EJECTION
(
S
IGNALS WITHIN
3
KHZ
)
VFO-B NB Operation
Press the [
B
] button (the [
B
] button glows orange).
Press the [ NB
] button briefly to reduce
short duration
pulse noise such as from switching transients, auto-
mobile ignitions and power lines. The “ ” icon will
appear in the display to confirm that the Narrow-NB is
operating.
Press the [
NB
] button again to reduce
longer-dura-
tion man-made pulse noise
. The “ ” icon will
blink for three seconds, and thereafter will appear con-
tinuously, to confirm that the Wide-NB is operating.
Rotate the (
VFO-B )[ NB
] knob to the point where the
offending noise is best reduced or eliminated.
To end Noise Blanker operation, press the [
NB
] but-
ton once more. The “ ” (or “ ”) icon will turn
off, confirming that the Noise Blanker is no longer in
operation.
[A] Button [NB] Button [B] Button [NB] Button
(VFO-A)[NB] Knob (VFO-B)[NB] Knob