Milltronics AiRanger SPL PL-573, Instruction Manual

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PL-573 AiRanger SPL Page 107
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Increase the Confidence Threshold (small amounts at a time) while observing the
results. If performance is not improved return the Confidence Threshold to the preset
value.
Connect an oscilloscope to the SPL, (see Enhancement Parameters Scope Displays,
P810). While monitoring the Echo Marker, select the Algorithm (P820) best suited to
the material/conditions.
If the "Area" algorithm is used and narrow noise spikes are evident on the (long shot)
Echo Profile, turn the Spike Filter (P821) on and/or widen the Narrow Echo Filter
(P822). Also, if the true echo has jagged peaks, use Reform Echo (P823).
If multiple echoes appear on the Echo Profile, typical of a flat material profile
(especially if the vessel top is domed), use the "first" Algorithm.
If the Echo Profile repeatedly switches from short to long, adjust the Short Shot
Range (P852) to stabilize the "shot" mode used for the echo evaluation. Also, adjust
the Short Shot Bias to increase (or decrease) the amount of preference given to short
shot echoes over long shot echoes.
Should a stable measurement still not be attainable, contact Milltronics or your local
distributor.