2-7
2.6
Selecting Picture Advance Speed
The picture advance speed determines how quickly the vertical scan lines run across the screen.
When selecting a picture advance speed, keep in mind that a fast advance speed will expand the
size of the fish school horizontally on the screen and a slow advance speed will contract it.
1. Press the [BRILL] and [AUTO] keys. The display should look something like the one below.
The fraction shown on the display denote number of scan lines produced per transmission.
For example, 1/8 means one scan line is produced every eight transmissions. "0" freezes the
display and it is convenient for observing an echo.
ADVANCE: 1
(1/8)
2. Continue pressing the [BRILL] and [AUTO] keys together to select desired speed.
2.7
Display Range Selection
The basic range and range shifting functions used together give you the means to select the
depth you can see on the screen. The basic range can be thought of as providing a "window" into
the water column and range shifting as moving the "wi+ndow" to the desired depth.
Display
Shift
2.7.1
Basic range selection
The basic range may be selected with the [RANGE] switch from the eight ranges shown in the
table below.
Table 1-1 Basic ranges (default settings)
Range No.
1
2
3
4
5
6
7
8
Meters
5
10
20
40
80
150
200
300
Feet
15
30
60
120
200
400
600
1000
Fathoms
3
5
10
20
40
80
100
150
Pass/Braze (P/B)
3
5
10
30
50
100
150
200
