250
9.8.1 Adjustment of the receiver
This adjustment need not be changed in general as the equipment is adjusted
ex-factory.
If the adjustment is changed inadvertently, it will not be possible to obtain the op-
timum tuning even when the TUNE control is operated.
1. Tune preset
1. Tune preset1. Tune preset
1. Tune preset
Here, rough adjustment of the tune will be undertaken.
(a)
Set the range to 12NM pushing the "▲(up)" or "▼ (down)" on the
ＲＡＮＧＥ
ＲＡＮＧＥＲＡＮＧＥ
ＲＡＮＧＥ
key.
(b) Push the soft key
ＰＲＯＣＥＳＳ
ＰＲＯＣＥＳＳＰＲＯＣＥＳＳ
ＰＲＯＣＥＳＳ
.
(c) Push the soft key 3 and select
Ｍ－ＴＵＮＥ
Ｍ－ＴＵＮＥＭ－ＴＵＮＥ
Ｍ－ＴＵＮＥ
.
The method of tuning has been set to "manual".
(If the mode is already in manual tuning, this operation is not required.)
(d) Push the
ＭＥＮＵ
ＭＥＮＵＭＥＮＵ
ＭＥＮＵ
key and close the soft key menu.
(e) Push the
Ｘ－ＭＩＴ／ＯＦＦ
Ｘ－ＭＩＴ／ＯＦＦＸ－ＭＩＴ／ＯＦＦ
Ｘ－ＭＩＴ／ＯＦＦ
switch and wait for 10 minutes or more.
Transmission will begin.
After about 10 minutes, the transmission frequency will stabilize.
(f) Turn the [TUNE] control to the mid position.
(g) Select "TUNE PRESET" in the line "RECEIVER ADJUST" - the menu "INITIAL
SETTING 1".
(h) Pushing the "▲ (up)" or "▼ (down)" on the ＲＡＮＧＥ
ＲＡＮＧＥＲＡＮＧＥ
ＲＡＮＧＥ key, adjust so that
the PPI image becomes the maximum size.
(i) Push the
ＥＮＴＥＲ
ＥＮＴＥＲＥＮＴＥＲ
ＥＮＴＥＲ
key.
The adjustment has been completed.
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