Icom IC-7200, Расширенные инструкции

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PANEL DESCRIPTION
q
PASSBAND TUNING CONTROLS [TWIN PBT]
Adjust the receiver’s DSP filter passband width.
(p. 5-4)
• The limit of the variable range depends on the passband
width and operating mode. The limit of the variable range
is half of the passband width, and PBT is adjustable in
200 Hz (AM) or 50 Hz (other modes) steps.
• Rotating both [TWIN PBT] controls (PBT1 and PBT2) to
the same position shifts the IF higher or lower.
What is the PBT control?
✓
Generally, the PBT electronically narrows the IF pass-
band width to reject interference. This transceiver uses
the DSP circuit for the PBT function.
PBT2
PBT1
Low cut High cut Center
TWIN PBT TWIN PBT TWIN PBT
–
+
w
NOISE BLANKER KEY
NB (p. 5-7)
Push to turn the noise blanker function ON or
➥
OFF.
• “ ” appears when the noise blanker function is
ON.
Hold down for 1 second to enter the noise blanker
➥
Set mode to set the noise blanker level and blank
width; push again to return to normal operation.
• When entering the noise blanker Set mode, the noise
blanker function is automatically turned ON.
• In the noise blanker Set mode, rotate
[M-CH] (
u
) to
select the item, then rotate [DIAL] to set.
What is the noise blanker?
✓
The noise blanker reduces pulse-type noise such as
that generated by automobile ignition systems. This
function is not effective against non pulse-type noise.
e
NR KEY NR (p. 5-8)
Push to turn the noise reduction function ON or
➥
OFF.
• “ ” appears when the noise reduction function is
ON.
Hold down for 1 second to enter the noise re-
➥
duction level Set mode; push again to return to
normal operation.
• When entering the noise reduction Set mode, the
noise reduction function is automatically turned ON.
• In the noise reduction Set mode, rotate [DIAL] to set.
What is the Noise Reduction function?
✓
The Noise Reduction (NR) function removes random
noise from the receiver passband. The level is adjust-
able to allow maximum clarity without harming the
intelligibility of the desired signal. Noise Reduction
should generally not be used in the digital modes.
i7200
MODE
TUNER
TS
FILTER
SPCH
V/M A/B
SPLIT
M-CL
SCAN
SET
ATT
P.AMP
COMP VOX
MNF RIT
1 2 3
4 5 6
7 8
0
50
28
18 14 10
21
24
=
7 3.5 1.8
F-INP
M-CH/RIT
ENT
BAND GENE
9
.
AGC
MW
ANF
METER
NR NB
Speaker e w
Function
Display (p. 1-12)
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■
Front panel
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