User's Manual

7ML19985LY01 SITRANS LR560 (FF) – INSTRUCTION MANUAL Page 101
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Parameters
To use Auto False Echo Suppression via AMS Device Manager:
Note value calculated in step b) and see
TVT Setup on page 54.
To set Auto False Echo Suppression via local operation:
See
AFES (Auto False Echo Suppression) Wizard1.2. on page 87.
2.4.8.2. Auto False Echo Suppression Range
Defines the endpoint of the Learned TVT distance. Units are defined in Unit
(2.3.1.)
2.4.8.3. Hover Level
Defines how high the TVT (Time Varying Threshold) curve is placed above
the noise floor of the echo profile, as a percentage of the difference between
the peak of the largest echo in the profile and the noise floor. (See Before
Auto False Echo Suppression on page 100 for an illustration.)
When SITRANS LR560 is located in the center of the vessel, the TVT hover
level may be lowered to increase the confidence level of the largest echo.
Note: Note the distance to material level when Auto False Echo learns
the environment. Set Auto False Echo Suppression Range to a shorter
distance to avoid the material echo being screened out.
Values
Range: 0.00 to 45.00 m (40 m device)
or 0.00 to 105.00 m (100 m device)
Default: 1.00 m
Values
Range: 0 to 100%
Default: 40%
After Auto False Echo
Suppression
learned TVT
material level
false echo
Auto False Echo
Suppression Range
echo marker
Level (db)
default
TVT