Pulsar M-920-S-001-1P, Service Manual

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P052 End Margin
The End Margin sets a boundary within which the Secondary Negative Gain
applied from the front of the gate is released.
Sometimes during periods of rain or high flow the interface is disturbed, this can,
under certain conditions, cause the unit to read incorrectly low.
When the event is over and the interface is re-forming at a higher level the
negative gain applied at lower levels is preventing the correct echo from being re-
established.
When the ‘End Margin’ is set to on and the echo falls to a level below the level
set in P52, then the Secondary Negative Gain applied from the front end of the
gate is not applied and the unit has a chance to re-establish itself on the correct
echo.
Values Min = 0.00m
Max = 99.99m
Note * The unit as does not apply negative gain at the front of the gate as a default
when no echoes can be seen within the system span (i.e. no ‘Normalised’ echo
trace).
If this is required, then set P51 = 1 and P52 = 0
*Versions 111E and above.
Default = 0.2m