Yaesu FT-450, Техническое дополнение

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ALIGNMENT-6
Alignment
Software Adjustment
Preparation
Set the VFO frequency for each band as indicated:
Set the following controls as indicated:
[
IPO ] button: OFF
[ ATT ] button: OFF
[ AGC ] button: AUTO
[ SHIFT ] knob: 12-o'clock position
[ AF GAIN ] knob: 12-o'clock position
[ RF GAIN ] knob: Fully clockwise
MODE: CW
CONTOUR: OFF
NOTCH: OFF
DNR: OFF
S-meter Adjustment
Connect the RF Signal Generator to the "ANT"
jack.
Press and hold in the [ ATT / IPO ], [ NB ], and [ AGC ]
buttons, while turning the radio on, to enter the
alignment mode.
Select the appropriate "Alignment Parameter"
using the [
DSP/SEL ] knob per the chart below,
then set the RF Signal Generator output to each
level, and adjust the [
MAIN DIAL ] knob for the
corresponding S-meter deflection.
ALC Adjustment
Connect the 50-Ohm Dummy Load and Wattme-
ter to the "ANT" jack.
Press and hold in the [ ATT / IPO ], [ NB ], and [ AGC ]
buttons, while turning the radio on, to enter the
alignment mode.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "I-ALC1".
Press the PTT switch, then rotate the [ MAIN DIAL ]
knob for 140 W ± 10 W on the Wattmeter. Note
the alignment value which is displayed on the
frequency display area of the LCD.
Release the PTT switch.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "I-ALC2".
Press the PTT switch, then rotate the [ MAIN DIAL ]
for 110 W ± 5 W on the Wattmeter.
Release the PTT switch.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "I-ALC3".
Rotate the [ MAIN DIAL ] knob to set an alignment
value to same value, which was noted in the pre-
vious step ("I_ALC1").
Press and hold in the [ F ] button for 2 seconds to
save the new setting and exit from the alignment
mode.
Power Adjustment (100 W)
Connect the 50-Ohm Dummy Load and Wattme-
ter to the "ANT" jack.
Press and hold in the [ ATT / IPO ], [ NB ], and [ AGC ]
buttons, while turning the radio on, to enter the
alignment mode.
Select the appropriate "Alignment Parameter"
using the [
DSP/SEL ] knob per the chart below,
and adjust the [ MAIN DIAL ] knob for the corre-
sponding Wattmeter deflection while pressing
the PTT switch.
O
PERATING
B
AND
General Band
1.8 MHz Band
3.5 MHz Band
7 MHz Band
14 MHz Band
21 MHz Band
28 MHz Band
50 MHz Band
F
REQUENCY
1.200 MHz
1.900 MHz
3.750 MHz
7.150 MHz
14.175 MHz
21.255 MHz
28.850 MHz
52.000 MHz
Press and hold in the [ F ] button for 2 seconds to
save the new settings and exit from the alignment
mode.
S-
METER
S-1 (3 dots)
S-1 (3 dots)
S-1 (3 dots)
S-1 (3 dots)
S-1 (3 dots)
S-1 (3 dots)
S-1 (3 dots)
S-1 (3 dots)
A
LIGNMENT
P
ARAMETER
SMADJ0
SMADJ1
SMADJ2
SMADJ3
SMADJ4
SMADJ5
SMADJ6
SMADJ
RF S
IGNAL
G
ENERATOR
1.200 MHz, 32 dBµ
1.900 MHz, 12 dBµ
3.750 MHz, 12 dBµ
7.150 MHz, 12 dBµ
14.175 MHz, 12 dBµ
21.255 MHz, 12 dBµ
28.850 MHz, 12 dBµ
52.000 MHz, 12 dBµ
A
LIGNMENT
P
ARAMETER
1PO100
2PO100
3PO100
4PO100
5PO100
6PO100
7PO100
W
ATTMETER
100 W ±2 W
100 W ±2 W
100 W ±2 W
100 W ±2 W
100 W ±2 W
90 W ±2 W
100 W ±2 W
Press and hold in the [ F ] button for 2 seconds to
save the new settings and exit from the alignment
mode.