Adjusting The Reference Level; Switching The Bandscope Attenuator; Configuring The Speed Of Waterfall Drop; Waterfall Display During Tuning (Center Mode) - Kenwood TS-890S Instruction Manual

7 SCOPE FUNCTIONS

Adjusting the Reference Level

Adjust the reference level of the bandscope to make it easier to
distinguish the target signal from the noise.
1 Press F5 [REF.LEV] to display the setting value of
the reference level at the center of the bandscope
screen.
• If F5 [REF.LEV] is not displayed, press F1 [MORE] to
display F5 [REF.LEV].
2 Turn the [MULTI/CH] control to adjust the reference
level while observing the spectrum scope
waveform and waterfall color level on the
bandscope screen.
Setting Value -20 to 0 (default) to +10 dB (0.5 dB step)
3 Press F5 [REF.LEV] to end adjustment of the
reference level.
The reference level is slightly compensated for each
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span internally on this transceiver so that the view of the
waterfall does not change even when the display
frequency span switches. For this reason, the height of
the waveform on the spectrum scope also changes
gradually when the span switches.
The adjustment value of the reference level is stored for
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each amateur band.

Switching the Bandscope Attenuator

If the target signal cannot be identified on the bandscope screen
even after adjusting the reference level due to the excessively high
input signals, attenuate the input level to the bandscope by
switching to a different attenuator for the bandscope.
Press F6 [ATT] to switch to a different attenuator.
• If F6 [ATT] is not displayed, press F1 [MORE] to display F6
[ATT].
Pressing F6 [ATT] each time switches the attenuator.
Setting Value Off (default)/ 10 dB/ 20 dB/ 30 dB
• Pressing and holding F6 [ATT] each time switches the
options in the reverse sequence.
• The current attenuator level setting is displayed at the top of
the bandscope.
"SCP OVF" (scope overflow) may be displayed in the
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toolbar of the bandscope screen if the input to the
bandscope becomes excessive. In such cases, press
F6 [ATT] to configure the attenuator for the bandscope
to lower the input level to the bandscope.
Switching the attenuator for the bandscope does not
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affect the RX sensitivity.
The setting value of the bandscope attenuator is stored
●
for each amateur band.
7-2

Configuring the Speed of Waterfall Drop

The speed at which the waterfall is flowing can be selected from
the options available.
Press F1 [MORE] followed by F4 [SPEED].
Pressing F4 [SPEED] each time switches the flow speed.
Setting Value Speed1/ Speed2/ Speed3/ Speed4 (default)
• After altering the speed, "Speed n" is displayed in the
waterfall area for about 1 second.
• Pressing and holding F4 [SPEED] switches the options in
the reverse sequence.

Waterfall Display during Tuning (Center Mode)

This is a function for switching the behavior of the waterfall display
when the frequency is altered in the center mode.
Configure in Menu [8-03] "Waterfall when Tuning
(Center Mode)"
Setting Value Straight (default)/ Follow
Straight: Pauses the target signal level traces displayed on the
waterfall and moves the traces horizontally across the screen
when the frequency is altered.
Follow: Tracks and displays the latest FFT level at the portion
where the waterfall starts flowing when the frequency is altered.

Reduced Bandscope Display

A small bandscope (with a waterfall display) can be displayed on
screens such as those for the different settings, RTTY
communication and PSK communication.
1 Display the menu, configuration modes except
equalizer configuration and the RTTY/PSK
communication screen.
2 Press [SCP].
A small bandscope is displayed.
.
While the reduced bandscope is displayed, the
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horizontally arrayed F keys are switched to the function
keys of the configuration screen and thus the bandscope
settings cannot be changed.