Справочник Пользователя для ICOM ic-756pro3
31
3
BASIC OPERATION
■
Meter function
The transceiver has 4 transmit meter functions for your
convenience. Select the desired meter with the
convenience. Select the desired meter with the
[METER]
switch.
• Analog transmit meter
➥Push
[METER]
to select RF power
(Po)
, SWR, ALC
or compression level
(COMP)
.
In addition, the transceiver can display the multi-func-
tion digital meter in the LCD display, which displays all
transmit meters simultaneously.
tion digital meter in the LCD display, which displays all
transmit meters simultaneously.
• Multi-function digital meter
q Push
[METER]
for 1 sec. to turn the multi-function
digital meter ON.
w Push
[(F-1)P-HOLD]
to toggle the peak level hold
function ON or OFF.
• “P-HOLD” appears on the window title when the peak
level hold function is turned ON.
e Push
[METER]
for 1 sec. or push
[EXIT/SET]
to
turn the multi-function digital meter OFF.
P-HOLD
P-HOLD
BW
BW
2.4k
2.4k
SFT
SFT
0
FIL2
FIL2
U S B
U S B
TX
TX
VFO
VFO
USB
USB
USB
USB
USB
USB
FIL2
FIL2
qr.qot.pp
qr.wpt.pp
14.100.00
14.100.00
14.100.00
14.100.00
1
1
VFO
VFO
. 1 . . . 3 . . . 5 . . . 7 . . . 9 .
. 1 . . . 3 . . . 5 . . . 7 . . . 9 . ..
..+20
+20...
...+40
+40...
...+60dB
+60dB
0∑∑∑∑∑∑∑∑∑∑∑
∑∑∑∑∑∑∑∑∑∑∑25
25∑∑∑∑∑∑∑∑∑
∑∑∑∑∑∑∑∑∑∑50 ∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑
∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑ 100%
100%
1
1.5
1.5
2
2.5
2.5
3
S
P o
P o
A L C
A L C
C O M P
C O M P
S W R
S W R
P-HOLD
P-HOLD
MULTI-FUNCTION METER
MULTI-FUNCTION METER
ANT
ANT
1
COMP
COMP
OFF
OFF
WIDE
WIDE
METER
METER
Po
Po
P.AMP
P.AMP
1
AGC
AGC
MID
MID
MID
ATT
ATT
OFF
OFF
OFF
VOX
VOX
OFF
OFF
OFF
0
5
10
15
20
20
dB
qw:pp
12:00
12:00
[METER]
DISPLAY
MEASUREMENT
INDICATION
Po
Indicates the relative RF output power in %.
SWR
Indicates the SWR over the transmission
line.
line.
ALC
Indicates the ALC level. When the meter
movement shows the input signal level ex-
ceeds the allowable level, the ALC limits
the RF power. In such cases, reduce the
movement shows the input signal level ex-
ceeds the allowable level, the ALC limits
the RF power. In such cases, reduce the
[MIC GAIN]
control.
COMP
Indicates the compression level when the
speech compressor is in use.
speech compressor is in use.
■
SWR reading
The SWR meter indicates the SWR over the transmis-
sion line in all modes.
sion line in all modes.
q Push
[TUNER]
to turn the antenna tuner OFF.
w Push
[METER]
several times to select the Po
meter.
e Push
[CW/RTTY]
once or twice to select RTTY
mode.
r Push
[TRANSMIT]
.
t Rotate
[RF POWER]
clockwise past the 12 o’clock
position for more than 30 W output power (30%).
y Push
[METER]
once to select the SWR meter as
the transmit meter.
u Read the SWR on the SWR meter.
The built-in antenna tuner matches the transmitter
to the antenna when the SWR is lower than 3 : 1.
to the antenna when the SWR is lower than 3 : 1.
SWR
S
COMP
ALC
Po
0
10
10
25 50
100
20
1
0
1.5
2
3
1
5
9
+ 20
+ 40
+ 60dB
dB
SWR meter
Less than 1.5:1