Table of Contents
Advertisement
JFC-180BB
1.6.2 Changing of TVG Strength
TVG - TVG Strength HF1, HF2, LF1, LF2
The gradient of gain variation is adjusted to
reduce gain for shallower depth.
1. Press
.
2. Select [TVG] - [TVG Strength XX].
3. Press [ ] of
The setup box of [TVG Strength XX] will
be displayed.
4. Press [▲] and [▼] and set a value.
When the value is larger, the gradient will
be steeper (gain variation amount is large)
and when the value is smaller, the
gradient will be gentler (gain variation
amount is small).
5. Press
to close the menu.
Caution: When [Manual] is selected
for [TVG Type], setup shall be
done to every frequency.
1.6.3 Changing of TVG Depth
TVG - TVG Depth HF1, HF2, LF1, LF2
The reference depth for correction will be
adjusted.
The reflected signal from depth shallower
this reference depth will be corrected to be
the same gain of the reference depth.
1. Press
.
2. Select [TVG] - [TVG Depth XX].
3. Press [ ] of
7ZPNA4619A
.
.
Chapter 1 Echo Adjust/Display Setup
The setup box of [TVG Depth XX] will be
displayed.
4. Press [▲] and [▼] to set a value for
depth.
When the value is larger, the correction
reference depth becomes deeper and the
gain at shallower depth will be reduced
when smaller.
5. Press
to close the menu.
Caution: When [Manual] is selected
for [TVG Type], setup shall be
done at every frequency.
1.6.4 Changing of TVG Adjust
TVG - TVG Adjust HF1, HF2, LF1, LF2
When correction is too much effective at
shallower depth, the correction start depth
will be adjusted. The correction amount at
depth shallower than the start depth will be
the same as that of the start depth.
1. Press
.
2. Select [TVG] - [TVG Adjust XX[.
3. Press [ ] of
The setup box of [TVG Adjust XX] will be
displayed.
4. Press [▲] and [▼] to set a value for
depth.
When the value is larger, the correction
start depth will become deeper and the
gain at shallower depth will increase.
.
1-11
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
付録
Advertisement
Table of Contents
