Simrad SP70
100
850--164186 A
PP Filter
The PP Filter button is located in the following index menus:
• Horizontal
• Ve rt ical
• Echosounder
• Second Ping
• Trawl
Figure 83 -
PP-filter
submenu
The PP Filter (Ping- to Ping filter) reduces unwanted noise and
echoes from the screen. The filter has three different strengths. As
the ping- to- ping filter compares the echoes from the last 2
(WEAK), 4 (MEDIUM) or 8 (STRONG) pings, it will take this
selected amounts of pings to make a stable presentation when
changing most of the sonar functions. The filtering routine takes
the vessel’s movements into consideration when comparing the
echoes from ping to ping.