Operation Manual

Simrad PI54

850-165186 / Rev.B

How to zoom in on pelagic echoes

The Zoom functions allows you to zoom in on echoes in the

water column.

When this function is active, the echo sounder presentation is

split in two. The upper part is the ordinary presentation, while

the lower part shows the expansion window with the echoes

over and under a reference depth.

Activate Zoom

1 Make sure that your echo sounder presentation is in an

active window.

2 Press the Zoom button.

If you were operating the echo sounder in Phased range mode

when you pressed the ZOOM button, the echo sounder will

automatically switch to St andard mode and use the applicable

depth range.

Change the reference depth

1 Press “up” and “down” on the Selector pad to change the

reference depth.

The depth you select will be stored by the echo sounder. The

next time you activate the Zoom, it will autmatically use this

reference value.

Change the range in the expansion window

1 Press the ADJ button to open the Echo presentation

setup.

2 Locate the Expansion window parameter, and change its

value.

3 Press the ENT button save the setting and return to the

echo sounder presentation.

De-activate Zoom

1 Press the STND buttontoreturntoStandard mode, or

2 Press the SHIFT buttontoreturntoPhased range mode.