Note 2: Ranges must be set in numerical order. For example, if basic range 3 is 60 feet and basic range 5 is 200 feet, the basic range which can be set for basic range 4 is between 60 and 200 feet.
ZOOM RANGE: Select the range to zoom in the marker and bottom zoom modes. You may select a range between 7 and 1500 feet. Default setting is 30 feet.
B/L RANGE: The expansion width for the
2.3 Demonstration Display
The demonstration display lets you get ac- quainted with the features of the
1.Turn on the power while pressing any key.
2.Press ▼ . The following display appears:
DEMO MODE
OFF ON
ts: To set condition
ESC: OPTION MODE
Figure 2-3 Demo mode display
3.Press s to select ON.
4.Reset the power. “DEMO” appears above the depth indication on the video sounder displays and at the top
To return to normal operation, turn off the demonstration display at step 2 in the above procedure.
2.4 Bottom Level
If the depth indication is unstable in automatic operation or the bottom echo cannot be dis- played in
1.Turn on the power while pressing any key.
2.Press the ALARM key three times. The
BOTTOM LEVEL
50kHz= 80(20~200) 200kHz= 80(20~200)
▲▼ : 50kHz
ts: 200kHz
Figure 2-4 Bottom level display
3.Operate the Cursor Pad to set level. The default bottom level for both 50 kHz and 200 kHz is 80.
4.Press the POWER key to escape.
17