Vertex Standard VX-4500 Series, Руководство по обслуживанию

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VX-4500/-4600 Series VHF FM Transceiver Service Manual
Alignment
3. RX Sensitivity (RX Tune)
This parameter is to align the RX BPF (Band Pass Filter) for Receive (RX) sensitivity. The PLL Reference Frequency
(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 appear.
2. Click the left mouse button on the slide bar or press
the Up / Down arrow keys, to switch to the desired
channel for alignment.
3. Set the Signal Generator according to the indication 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) on the selected channel.
5. Click the “OK” button to finish the RX Sensitivity align-
ment 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 se-
lected channel.
All Freq : Alignment value changes on all channels.
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