
7ML19981FC01 HydroRanger 200 – INSTRUCTION MANUAL Page 195
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Parameters
Use this to select the algorithm(s) the Sonic Intelligence®echo selection is based on. Use
P805 Echo Confidence (page 190) to determine which algorithm gives the highest
confidence under all level conditions. If the wrong echo is processed, observe the echo
processing displays and select an alternate algorithm, either by entering the numeric
value desired, or as below:
1. Press MEASURE to display the Auxiliary Function symbol.
2. Press ARROWS to access the desired Reading display symbols.
3. Press ENTER when the required algorithm is displayed.
P821 Spike Filter
Dampens spikes in the echo profile to reduce false readings.
Use P821 if interference spikes are on the long shot Echo Profile display.
P822 Narrow Echo Filter
Filters out echoes of a specific width.
Use this for transducer acoustic beam interference (e.g. ladder rungs). Enter the width of
false echoes (in ms) to be removed from the long shot Echo Profile. When a value is keyed
in, the nearest acceptable value is entered.
Related
• P805 Echo Confidence
• P817 Profile Pointer Time
• P818 Profile Pointer Distance
• P819 Profile Pointer
Amplitude
• P821 Spike Filter
• P822 Narrow Echo Filter
• P823 Reform Echo
• P825 Echo Marker Trigger
Primary Index Global
Values
0Off
1*On
Related
• P817 Profile Pointer Time
• P818 Profile Pointer Distance
• P819 Profile Pointer
Amplitude
• P820 Algorithm
• P822 Narrow Echo Filter
• P823 Reform Echo
• P825 Echo Marker Trigger
Primary Index Global
Values
0 = OFF (preset)
Greater = wider
Related
• P817 Profile Pointer Time
• P818 Profile Pointer Distance
• P819 Profile Pointer
Amplitude
• P820 Algorithm
• P821 Spike Filter
• P823 Reform Echo
• P825 Echo Marker Trigger
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