Removing noise and false echoes
The Ping-Ping Filter analyses the historical information from previous consecutive pings in order to remove unwanted noise and interference from the echo presentation.
Context
The following filter options are provided:
•  Off: The filter is disabled. The historical information from previous transmissions ("pings") are not used to remove noise and unwanted echoes.
•  Weak: Select Weak to allow the filter to compare the echoes from the latest two pings.
•  Medium: Choose Medium to compare the echoes from the latest four pings.
•  Strong: Select Strong to allow the filter to compare the echoes from the latest eight pings.
The Ping-Ping Filter removes noise from the Swath view.
Procedure
1 Open the Active menu.
2 Locate the Ping-Ping Filter.
Image
3 Choose the required setting.