Tvt (Time Varying Threshold) Curves; Auto False-Echo Suppression - Siemens HydroRanger 200 Instruction Manual

TVT (Time Varying Threshold) curves

A TVT curve describes a threshold below which any echoes will be ignored. The default
TVT curve is used, until P837 and P838 are used to create a new 'learned TVT curve' .

Auto False-Echo Suppression

False echoes can be caused by an obstruction in the beam path (pipes, ladders, chains,
and such). Such false echoes may rise above the default TVT curve.
P838 allows you to set a distance, and P837 then instructs the HydroRanger 200 to 'learn'
where the obstructions/false echoes are within that distance. The new TVT curve is set
above the false echoes, screening them out.
Display before Auto False Echo Suppression
false
echo
Display after Auto False Echo Suppression
false
echo
7ML19985FC03
(or when P837 = 0)
default TVT
Distance (meters)
TVT curve
(learned)
Distance (meters)
HydroRanger 200 – INSTRUCTION MANUAL
true
P839
echo
Hover Level
material
level
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