Yaesu FT-450, Техническое дополнение, Страница: 16 / 69

ALIGNMENT-8
Alignment
TX Gain Adjustment
Connect the 50-Ohm Dummy Load and Wattme-
ter to the "ANT" jack.
Connect the Audio Generator to pin 5 of the MIC
jack (pin 7: GND), then set the output level to 1
mV @1 kHz.
Press and hold in the [ ATT / IPO ], [ NB ], and [ AGC ]
buttons, while turning the radio on, to enter the
alignment mode.
ALC Meter 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 "ALCM L".
Press the PTT switch, then press the [ STO ] but-
ton.
Connect the Audio Generator to pin 5 of the MIC
jack (pin 7: GND), then set the output level to 4
mV @1 kHz.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "ALCM H".
Press the PTT switch, then press the [
STO ] but-
ton.
Press and hold in the [ F ] button for 2 seconds to
save the new setting and exit from the alignment
mode.
Reverse ALC Adjustment
Connect the 16.6-Ohm Dummy Load (parallel
connections of the three 50-Ohm Dummy Loads)
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 "1-RALC".
Press the PTT switch, then rotate the [ MAIN DIAL ]
knob for 50 W on the PO meter of the FT-450.
Release the PTT switch.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "2-RALC".
Press the PTT switch, then rotate the [ MAIN DIAL ]
knob for 50 W on the PO meter of the FT-450.
Release the PTT switch.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "3-RALC".
Press the PTT switch, then rotate the [ MAIN DIAL ]
knob for 50 W on the PO meter of the FT-450.
Release the PTT switch.
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "50RALC".
Press the PTT switch, then rotate the [ MAIN DIAL ]
knob for 50 W on the PO meter of the FT-450.
Release the PTT switch.
Press and hold in the [
F ] button for 2 seconds to
save the new settings and exit from the alignment
mode.
Press and hold in the [ F ] button for 2 seconds to
save the new settings and exit from the alignment
mode.
AM Carrier Level 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.
Set the [ MODE ] switch to "AM".
Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "AM-CAR".
Press the PTT switch, then rotate the [ MAIN DIAL ]
knob for 25 W±2 W on the Wattmeter.
Release the PTT switch.
Press and hold in the [ F ] button for 2 seconds to
save the new setting and exit from the alignment
mode.
A
LIGNMENT
P
ARAMETER
TXG1H
TXG2H
TXG3H
TXG4H
TXG5H
TXG6H
TXG7H
TXG1L
TXG2L
TXG3L
TXG4L
TXG5L
TXG6L
TXG7L
W
ATTMETER
50 W ±10 W
50 W ±10 W
50 W ±10 W
50 W ±10 W
50 W ±10 W
50 W ±10 W
50 W ±10 W
10 W ±2 W
10 W ±2 W
10 W ±2 W
10 W ±2 W
10 W ±2 W
10 W ±2 W
10 W ±2 W