Yaesu VX-450 series, Руководство по обслуживанию

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34 VX-450 Series UHF Band Service Manual
Alignment
3. RX S
ENSITIVITY
(
RX T
UNE
)
This parameter is to align the RX BPF (Band Pass Filter) for Receive (RX) sensitivity. The PLL Reference Fre-
quency (Frequency) alignment must be done before this alignment is performed.

1. Press the “RX Tune” button to start the alignment.
The RX Sensitivity Alignment window will ap-
pear.
2. Click the left mouse button on the slide bar or
press Up / Down arrow key, to switch to the se-
lected channel.
3. Set the Signal Generator according to the indica-
tion at the top of the screen (Setting Your SG as
followings).
4. Drag the slide bar, click the up-down buttons,
press the left or right arrow key, or enter the value
in the entry box to get the best RX sensitivity
(Highest RSSI value).
5. Click the “OK” button to finish the RX Sensitivity
alignment and save the data.
ADJ Type
Basic
: “Low-edge / band center / high-edge“
and select the channel for alignment
(Default).
Single : Alignment value changes only on the
selected channel.
All Freq : Alignment value changes on all chan-
nels.