Simrad SN90 Operator's Manual page 64

Purse seine and trawling sonar
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Simrad SN90 Operator Manual
2
On the
menu, set
Main
3
Open the
Operation
4
Open the
Active
5
Open the
Setup
6
Select
to open the dialog box.
BITE
a
Select
Noise
b
Select
Start Noise Measurements
c
On the
Active
value.
d
Note frequencies with high noise levels, and try to avoid using them.
Tip
The factory default settings include operating frequency. If you apply these settings
remember to make the appropriate changes afterwards.
Related topics
Choosing operating mode and key transmit parameters, page 55
62
to 1000 m.
Range
menu. Set
Tx Power
menu. Set
Pulse Type
menu.
to open the page.
menu, change the
to Off.
to CW Medium.
.
setting while observing the noise
Frequency
381295/B

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