DMU-2000 D
ATA
M
ANAGEMENT
U
NIT
Page 22
S
PECTRUM
S
COPE
U
SING
THE
CTR
(
C
ENTER
)
D
ISPLAY
M
ODE
It is possible to see both strong and weak signals clearly and easily on the Main (VFO-A) band. 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 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 fre-
quency 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 the [
F3
(
ATT
)] key to select the attenuation value
according to current propagation conditions, your
operating frequency and antenna, etc.
0 dB
10 dB
20 dB
0 dB
......
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
the [
F1
(
MKR ON/OFF
)] key 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
(
)] keys. 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 momen-
tarily (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.
[
F2
(
SPAN
)]
Key
[
F6
(
CTR/FIX
)]
Key
[
F3
(
ATT
)]
Key
“MKR ON/OFF” Key
“CF” Key
