DMU-2000 D
ATA
M
ANAGEMENT
U
NIT
Page 20
A
BOUT
THE
S
PECTRUM
S
COPE
S
PECTRUM
S
COPE
This page displays the Spectrum Scope which is conve-
nient for monitoring band activity.
The entire screen will become the spectrum display, and
you can see both strong and weak signals clearly and eas-
ily on the Main (VFO-A) band.
Furthermore, the LBWS function allow you to realize
very high-speed signal detection over a limited band seg-
ment. The CTR mode let you monitor close by your cur-
rent frequency (your frequency is located at the center
of the screen), and the FIX mode can also be engaged,
whereby the left edge frequency is fixed. These features
have been carefully considered for their utility in actual
Amateur Radio operation.
If the “Spectrum Scope” screen does not initially appear,
press the [
DISPLAY
] key to switch the Function key’s
function to “Page Select Key,” then press the [
F2
(
RF
SCOPE
)] key momentarily to display the “Spectrum
Scope” screen. Next, press the [
DISPLAY
] key again to
switch the Function key’s function to the “Function Key.”
Quick Point
: The vertical axis of the Spectrum Scope is
10 dB per division.
During transmission, the transmitter’s waveform will be
displayed.
E
XPLANATION
OF
THE
F
UNCTION
K
EYS
ON
THE
S
PECTRUM
S
COPE
S
CREEN
The functions of the individual function tabs will change, depending on the display page being viewed. Therefore, care-
fully inspect each tab as you change pages, to ensure you are performing the correct and desired function.
[
F1
(
FUNC
)]
Key
Moves you to the function screen of the Spectrum
Scope used for setup of the MKR (Marker) function,
etc.
Advice
: On this screen, the functions assigned to the
function keys can be changed. If you want to go back
to the previous screen, press the [
F7
(
EXIT
)] key.
[
F2
(
SPAN
)]
Key
(Bandwidth)
By pressing this key momentarily, it is possible to
set the range of frequencies from the left edge to the
right edge. If the setting is toggled to 2500 kHz, and
you press this key once more, the span returns to 25
kHz again. At the top of the screen, the current span is
indicated below the span indication.
25 kHz
50 kHz
100 kHz
250 kHz
500 kHz
1000 kHz
2500 kHz
25 kHz
......
