Simrad NX40 Installation & Operation Manual page 40

A
40
may not be found at all.
This frequency is useful for getting a deep, wide
overview of the area so that any areas of interest can
be identified and then examined in detail with the 200
kHz frequency.
When to use Mixed
The Mixed frequency combines the 200 kHz and the
50 kHz echoes on one echosounder window, filling in
detailed echoes in the center of the echosounder cone.
When to use 50/200 kHz
Operating the unit at both 50 kHz and 200 kHz
simultaneously on a split window can be very useful
when operating in shallow to medium water, typically
less than 500 ft (150 m), because the 50 kHz section
of the window shows the general area, while the 200
kHz section can be viewed simultaneously for a more
detailed look at any interesting feature.
B
To use 50/200 kHz, select the Split 50/200 window.
A Narrow angle, more detailed 200 kHz cone
B Wide angle, less detailed 50 kHz cone
Simrad NX40/45 Installation and Operation Manual