296
406388/F
The following options are available:
•
Off
The filter is switched off.
•
Weak
The information provided from the sensors must be stable for at least two
consecutive transmissions. If this is not the case, the information is not shown
in the TV80 presentation.
•
Medium
The information provided from the sensors must be stable for at least four
consecutive transmissions. If this is not the case, the information is not shown
in the TV80 presentation.
•
Strong
The information provided from the sensors must be stable for at least eight
consecutive transmissions. If this is not the case, the information is not shown
in the TV80 presentation.
AGC (Automatic Gain Control)
The
AGC
(Automatic Gain Control) function runs an automatic analysis of the echo
strength. During normal operation,
On
is the recommended (and default) setting.
Manual Gain
This function allows you to apply a selected amount of gain to the receiver
circuitry. If you decide to switch the AGC off you must set the gain manually.
The default and recommended setting is
Medium
.
Multipath Filter
The
Multipath Filter
is designed to remedy for reflections, spikes and time-lag in
the sensor data. These problems may occur if neighbouring channels are used,
or if the TV80 is disturbed by other hydroacoustic systems in use on your own
or other vessels.
When you operate in areas with substantial reverberation due to the bottom
conditions, or in shallow waters, you may experience “jumps” or spikes in the
data received from the sensors. Such errors can also be caused by other types of
hydroacoustic equipment operating on the TV80 frequency range. This filter has
been implemented to remedy for such interference problems as well.
Note
We recommend that you switch this filter On if there are large fluctuations in
the displayed data, or if the rate of change is small. No filtering is preferable
if instantaneous readings are required, since this shortens the delay between
updating the changes in sensor data, and the corresponding displayed information.
Simrad TV80 Reference Manual
Содержание Simrad TV80
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