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USING THE LBWS (LIMITED BAND WIDTH SWEEP)FUNCTION
LBWS (Limited Band Width Sweep) is a function that sweeps a limited segment of the Spectrum Scope span without changing
the span (bandwidth).As the sweep segment becomes narrower, the speed becomes faster, and the accuracy and resolution are
enhanced.
The bandwidth can be set to 50 %, 30 %, or 10 % of the full span. The sweep speed will increase as follows: 50 %: about 2 times
faster, 30 %: about 3 times faster, 10 %: about 10 times faster.
1. Press and hold the FTDX5000 [C.S]key for 2 seconds to
engage the Scope Menu mode.
The SUB DISPLAY-Iwindow will show the Group name
(SCOPESCOPE
SCOPESCOPE
SCOPE), while the SUB DISPLAY-II window will show
the Menu item. The SUB DISPLAY-III window shows
the setting of the currently-selected Menu item.
2. Rotate the (VFO-A)[SELECT]knob to select the Menu
item “MODEMODE
MODEMODE
MODE”, then rotate the (VFO-B)[SELECT]knob
to select the desired sweep bandwidth.
LBWS-1LBWS-1
LBWS-1LBWS-1
LBWS-1: The sweep speed becomes about 2 times faster
(The bandwidth decreases to 50 %).
LBWS-2LBWS-2
LBWS-2LBWS-2
LBWS-2: The sweep speed becomes about 3 times faster
(The bandwidth decreases to 30 %).
LBWS-3LBWS-3
LBWS-3LBWS-3
LBWS-3: Thesweep speed becomes about 10 times faster
(The bandwidth decreases to 10 %).
Note: The “CENTERCENTER
CENTERCENTER
CENTER” and “FIXFIX
FIXFIX
FIX” selections are not select
items of the LBWS function. Do not select these selec-
tions.
4. Rotate the (VFO-A)[SELECT]knob to select the Menu
item “SPANSPAN
SPANSPAN
SPAN”, then rotate the (VFO-B)[SELECT]knob
to select the desired frequency span to monitor.
Available selections are: 25 kHz25 kHz
25 kHz25 kHz
25 kHz,50 kHz50 kHz
50 kHz50 kHz
50 kHz,100 kHz100 kHz
100 kHz100 kHz
100 kHz,250250
250250
250
kHzkHz
kHzkHz
kHz,500 kHz500 kHz
500 kHz500 kHz
500 kHz,1000 kHz1000 kHz
1000 kHz1000 kHz
1000 kHz,and 2500 kHz2500 kHz
2500 kHz2500 kHz
2500 kHz.
5. Rotatethe(VFO-A)[SELECT]knobtoselecttheMenuitem
“ATTATT
ATTATT
ATT”, then rotate the (VFO-B)[SELECT]knob to select
the display attenuation value according to current propaga-
tion conditions, your operating frequency, and antenna, etc.
Available selections are: 0 dB0 dB
0 dB0 dB
0 dB,10 dB10 dB
10 dB10 dB
10 dB,and 20 dB20 dB
20 dB20 dB
20 dB.
6. Press the [C.S]key briefly to save the new setting and
exit to normal operation.
NOTE:
The Trace Mode cannot be selected with the LBWS function.
(VFO-A)[SELECT]Knob
(VFO-B)[SELECT]Knob
[C.S]Switch
1. Press and hold the FTDX5000 [C.S]key for 2 sec-
onds to to engage the Scope Menu mode.
The SUB DISPLAY-Iwindow will show the Group
name (SCOPESCOPE
SCOPESCOPE
SCOPE), while the SUB DISPLAY-II window
willshowthe Menuitem.TheSUB DISPLAY-III win-
dow shows the setting of the currently-selected Menu
item.
2. Rotate the (VFO-A)[SELECT]knob to select the
Menu item “LBWSLBWS
LBWSLBWS
LBWS”, then rotate the (VFO-
B)[SELECT]knob to select the desired sweep area.
Available selections are shown at the right.
3. Press the [C.S]key briefly to save the new setting and
exit to normal operation.
SELECTING THE SWEEP AREA
LBWSx LLBWSx L
LBWSx LLBWSx L
LBWSx L: TheSpectrum scan sweepsthebandsegment
on the lower side of the operating frequency.
LBWSx MLBWSx M
LBWSx MLBWSx M
LBWSx M: TheSpectrum scansweepsthebandsegment
centered on the operating frequency.
LBWSx HLBWSx H
LBWSx HLBWSx H
LBWSx H: TheSpectrum scansweepsthebandsegment
on the upper side of the operating frequency.
xxxxx:11111,22222, or 33333; indicates the sweep segment that is desig-
nated in the Menu item “MODEMODE
MODEMODE
MODE”, described previously.
The above examples are “22222” (LBWS-2LBWS-2
LBWS-2LBWS-2
LBWS-2).
Current VFO-A Frequency OPERATING Mode
LBWS
Current Sweep Bandwidth