Yaesu FT DX 9000D TFT, Operation Manual, Page: 16 / 52

FT
DX
9000 TFT O
PERATION
M
ANUAL
S
PECTRUM
S
COPE
U
SING THE
CTR
(
C
ENTER
)
D
ISPLAY
M
ODE
It is possible to switch between the Main (VFO-A) and Sub (VFO-B) VFOs. Also, dual display of both VFOs is
available (Upper: Main (VFO-A) and Lower: Sub (VFO-B)).
Also, the LBWS (Limited Band Width Sweep) mode lets you perform a high-speed, high-resolution sweep of a
limited band segment.
1. Press the [ F6
](
CTR/FIX
) key to change to the CTR
mode.
2. By pressing [ F6
](
CTR/FIX
) key, the CTR mode
and the FIX mode will be toggled alternately. In
the CTR mode, the center frequency (your cur-
rent operating frequency) will displayed and the
frequency indication located at the mid of the dis-
play will be shown as FREQUENCY. Also, the
yellow “
” arrow will appear at the center of the
display, indicating your current operating fre-
quency.
3. Press the [ F2
](
SPAN
) key to select the desired
frequency span to monitor.
By pressing the [
F2
](
SPAN
) key, the span will
change as follows.
25 kHz 50 kHz 100 kHz 250 kHz
500 kHz 1000 kHz 2500 kHz 25 kHz ......
4. Press this key to select the attenuation value ac-
cording to current propagation conditions, your
operating frequency and antenna, etc.
0 dB 10 dB 20 dB 0 dB ......
5. Press the [ F4
](
A/B
) key to select the desired VFO
to monitor.
6. If you want to display both VFO spectra, press
the [
F5
](
DUAL
) key to engage the dual display
mode.
The Main (VFO-A) will appear in the upper dis-
play field, and the Sub (VFO-B) will appear in the
lower. When dual display is engaged, if the
[
F6
](
STATUS
) key is pressed, the setup status will
be indicated on the screen. When this key is
pressed again, the setup status screen will disap-
pear.
U
SING THE
M
ARKER
Press the [ F1
](
FUNC
) key to show the screen
for setup of the Marker. The indication
[
F1
](
FUNC
) will change to [
F1
](
MKR ON/OFF
);
now press [ F1
](
MKR ON/OFF
) once again, and
the Marker line will be displayed at the center of
the screen.
It is possible to change the position of the marker
by pressing the [
F2
]( ) and [
F3
]( ) key. If you
want to center on a strong signal, you can move
the marker to the screen position occupied by
that signal. When the [
F5
](
CF
) key is pressed
momentarily (one touch), the marker position
will return to the center.
In order to remove the marker, press the
[
F1
](
MKR ON/OFF
) key.
When you want to return to the Spectrum Scope
screen, press the [
F7
](
EXIT
) key. If the screen
returns to the previous screen (with the Marker
displayed), the marker will remain on the screen.
“SPAN” Select “FIX/CRT” Select
D
UAL
D
ISPLAY
M
ODE
Page 14