D Adjusting The Reference Level; D Sweep Speed - Icom IC-7300 HF Plus Full Manual

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5
SCOPE OPERATION
Spectrum scope screen (Continued)
D Adjusting the Renerence level
When monitoring a weak signal that is buried in the
noise floor, or monitoring a strong signal but some
stronger signals are nearby, adjusting the Reference
level of the screen helps to see these signals.
• Even if this setting is changed, it does not affect the
scope input level.
• When you adjust the Reference level, the signal
strength for the waterfall also appears to change.
1. Open the SPECTRUM SCOPE screen.
» SCOPE
MENU
2. Touch [<1>].
• The function menu changes to Menu 2.
3. Touch [REF].
• Opens the Reference level window.
LTouch [REF] to open or close the window.
4. Rotate to adjust the level.
MAIN DIAL
• Adjustable range: –20.0 dB ~ +20.0 dB
LTouch [REF] for 1 second to select ±0.0 dB.
Dinnerence spectrum (+20.0, ±0.0, –20.0 dB)
Reference level
(+20.0 dB)
R T HOLD
–5.0k
+20.0 dB
±0.0 dB
–20.0 dB
L If you adjust this setting to a positive level, all
–4 –3
signal levels appear stronger.
Or, if you adjust to a negative level, all signal
levels appear weaker.
5. Touch [REF].
• Closes the Reference level window.
6. To exit the SPECTRUM SCOPE screen, push
Reference level
(–20.0 dB)
SPECTRUM SCOPE
R T HOLD
–5.0k
–2 –1 –4 0 –3 +1 –2 +2
EXIT

D Sweep speed

Select the sweep speed to change the FFT scope
refresh speed and the waterfall speed.
L To change only the waterfall speed, select "Slow,"
"Mid," or "Fast" in the Scope set screen. (p. 5-7)
1. Open the SPECTRUM SCOPE screen.
» SCOPE
MENU
2. Touch [<1>].
• The function menu changes to Menu 2.
3. Touch [SPEED] several times until the desired
sweep speed is selected.
• Selectable speeds: FAST, MID, or SLOW
L"," "," or "" indicates FAST, MID, or SLOW.
L A popup window appears in the center of
SPECTRUM SCOPE screen and displays the
selected sweep speed for 1 second.
Sweep speed (FAST)
Sweep speed (MID)
Sweep speed (SLOW)
SPECTRUM SCOPE
Grid 1k/10dB CENTER
CENTER
+5.0k
4. To exit the SPECTRUM SCOPE screen, push
–1 +3 0 +4 +1 +2 +3
.
5-5
""
""
Grid 1k/10dB
""
+4
.
EXIT