Gate - DAKOTA ULTRASONICS MiniMax v2.0 Operation Manual

Ultrasonic bolt tension monitor
Table of Contents

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3) Press the
the correct Step Size is being displayed, proceed to step 8.
4) Alternatively, press the
5) Press the
value.
6) Press the
locations.
7) Repeat steps 5 & 6 until the Step Size value is correctly displayed.
8) Press the
to cancel entering the Step Size.
9) Finally, press the
taking readings.

12.5 Gate

The MiniMax is equipped with a single gate typically used to block or eliminate noise
that is present prior to the reflection from the end of the bolt, and also to force a
detection at or on a specific location or waveform. In some cases the first reflection
from the end of the bolt will not produce a suitable symmetrical waveform. However,
if the user looked further out in time (length), a reflection from a mode conversion
very well may be a better alternative signal to detect on. A mode conversion is
simply a reflection of energy that took a longer path reflecting off the sidewalls of the
and
arrow keys multiple times to scroll the value. When
key to display the Digits Edit Box.
and
arrow keys multiple times to scroll the highlighted
and
arrow keys multiple times to scroll the digit
key to set the Step Size and return to the menu screen, or
key to return to the measurement screen and begin
135
MiniMax Bolt Tension Monitor

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