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Simrad EK15
Tip
The length of your transmitted pulse is very important to how you can detect fish.
• A short pulse duration gives you a very fine vertical resolution. This allows you
to detect scattered fish, and you can find those that move near the bottom.
• A long pulse duration throws a lot more energy into the water, and the digital
filters used by the receiver are narrower. The longer pulse duration will provide
longer range, but reduced vertical resolution.
These filters will reduce the EK15's sensitivity for noise, but the length of the
transmitted pulse will give you stronger echoes. With the filters, a longer pulse
duration will provide longer range, but reduced vertical resolution.
These are the available pulse durations for the EK15.
200 kHz:
4
Power
On the EK15, the power output is fixed, and you are not permitted to adjust it.
5
Depth
This is the depth of the transducer face relative to the water surface.
In order to measure correct water depth, the EK15 needs to know the vertical
distance between the vessel's water line and the acoustic face of each transducer.
The depth of each individual transducer must be defined manually. Enter the depth
as a positive number.
This parameter is only valid when the EK15 and a number of transceivers and
transducers are used on a vessel.
Example 20 Transducer depth
If the distance from the water line and down to the transducer face is 3,5
meters, enter +3,5 m.
6
Sequential pinging
The
Sequential pinging
transceiver/transducer in use on the EK15 system. When activated, each individual
transceiver will 'ping' in sequence, one by one. When not activated, all transceivers
will 'ping' simultaneously.
Tip
The
Sequential pinging
such a manner that interference is a problem.
Related procedures
• Choosing passive mode of operation on page 78
• Adjusting the pulse duration (length) on page 78
156
80 µs
160 µs
function can be used if you have more than one
function can be very useful if your transducers are located in
320 µs
640 µs
1280 µs
351718/C
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