Yaesu VX-160U, Alignment Manual

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VX-160U/180U
Alignment
2
PLL & Transmitter PLL & Transmitter PLL & Transmitter PLL & Transmitter
Set up the test equipment as shown for transmitter alignment. Adjust the supply
voltage to 7.2 V for all steps where not specified otherwise.
PLL VCV (Varactor Control Voltage)
ˆ
Connect the DC voltmeter between
TP03
on the Main Unit and ground.
ˆ
Set the transceiver to CH 3 (high band edge), and adjust
L1004
on the Main Unit
for 4.1 V ± 0.1 V on the DC voltmeter.
ˆ
Set the transceiver to CH 1 (low band edge), and confirm the low-end VCV is more
than 1.1 V while transmitting, and also while receiving.
PLL Reference
ˆ
Set the transceiver to CH 2 (band center).
ˆ
Open the “Adjust Adjust Adjust Adjust” window on the CE44, then select “Reference Reference Reference Reference” parameter.
ˆ
Press the
[ ENTER ]
key to enable programming of this parameter, use the [
UP
] or
[
Down
] arrow keys so that the frequency counter displays band center frequency
±100 Hz (for the version being aligned).
Transmitter Output Power
ˆ
Set the transceiver to CH 2 (band center).
ˆ
Open the “Adjust Adjust Adjust Adjust” window on the CE44, then select “TX Hi Power TX Hi Power TX Hi Power TX Hi Power” parameter.
ˆ
Press the
[ ENTER ]
key to enable programming of this parameter, use the [
UP
] or
[
Down
] arrow keys so that the power meter reading is 5 W. Confirm that the
current consumption is 2.0 A or below.
ˆ
Select “TX Low Power” parameter.
ˆ
Press the
[ ENTER ]
key to enable programming of this parameter, use the [
UP
] or
[
Down
] arrow keys so that the power meter reading is 1 W. Confirm that the
current consumption is 1.0 A or below.
Modulation Level
ˆ
Set the transceiver to CH 2 (band center).
ˆ
Inject a 1 kHz tone at 77 mVrms to the
MIC
jack.
ˆ
Open the “Adjust Adjust Adjust Adjust” window on the CE44, then select “Modulation Modulation Modulation Modulation” parameter.
ˆ
Press the
[ ENTER ]
key to enable programming of this parameter, use the [
UP
] or
[
Down
] arrow keys so that the deviation meter reading is ±4.2 kHz (for 25 kHz
steps) or ±2.1 kHz (for 12.5 kHz steps) deviation.